Tweak to support 1Mbaud and similar baudrates that require Mode16 instea... #26

alexey-pelykh · 2012-11-27T18:57:46Z

...d of Mode13

…tead of Mode13

torvalds · 2012-11-27T20:12:24Z

Nobody takes kernel pulls from github pull requests. Stop doing them. They
are crap.

Use the "git request-pull" scripting instead, which does this properly.

         Linus

WARNING: line over 80 characters torvalds#24: FILE: fs/binfmt_elf.c:1604: + info->psinfo.data = NULL; /* So we don't free this wrongly */ ERROR: code indent should use tabs where possible torvalds#26: FILE: fs/binfmt_elf.c:1606: + }$ WARNING: please, no spaces at the start of a line torvalds#26: FILE: fs/binfmt_elf.c:1606: + }$ total: 1 errors, 2 warnings, 11 lines checked NOTE: whitespace errors detected, you may wish to use scripts/cleanpatch or scripts/cleanfile ./patches/binfmt_elf-fix-corner-case-kfree-of-uninitialized-data.patch has style problems, please review. If any of these errors are false positives, please report them to the maintainer, see CHECKPATCH in MAINTAINERS. Please run checkpatch prior to sending patches Cc: Alan Cox <alan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

WARNING: line over 80 characters #24: FILE: fs/binfmt_elf.c:1604: + info->psinfo.data = NULL; /* So we don't free this wrongly */ ERROR: code indent should use tabs where possible #26: FILE: fs/binfmt_elf.c:1606: + }$ WARNING: please, no spaces at the start of a line #26: FILE: fs/binfmt_elf.c:1606: + }$ total: 1 errors, 2 warnings, 11 lines checked NOTE: whitespace errors detected, you may wish to use scripts/cleanpatch or scripts/cleanfile ./patches/binfmt_elf-fix-corner-case-kfree-of-uninitialized-data.patch has style problems, please review. If any of these errors are false positives, please report them to the maintainer, see CHECKPATCH in MAINTAINERS. Please run checkpatch prior to sending patches Cc: Alan Cox <alan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

commit fe20b39 upstream. reg_timeout_work() calls restore_regulatory_settings() which takes cfg80211_mutex. reg_set_request_processed() already holds cfg80211_mutex before calling cancel_delayed_work_sync(reg_timeout), so it might deadlock. Call the async cancel_delayed_work instead, in order to avoid the potential deadlock. This is the relevant lockdep warning: cfg80211: Calling CRDA for country: XX ====================================================== [ INFO: possible circular locking dependency detected ] 3.4.0-rc5-wl+ #26 Not tainted ------------------------------------------------------- kworker/0:2/1391 is trying to acquire lock: (cfg80211_mutex){+.+.+.}, at: [<bf28ae00>] restore_regulatory_settings+0x34/0x418 [cfg80211] but task is already holding lock: ((reg_timeout).work){+.+...}, at: [<c0059e94>] process_one_work+0x1f0/0x480 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 ((reg_timeout).work){+.+...}: [<c008fd44>] validate_chain+0xb94/0x10f0 [<c0090b68>] __lock_acquire+0x8c8/0x9b0 [<c0090d40>] lock_acquire+0xf0/0x114 [<c005b600>] wait_on_work+0x4c/0x154 [<c005c000>] __cancel_work_timer+0xd4/0x11c [<c005c064>] cancel_delayed_work_sync+0x1c/0x20 [<bf28b274>] reg_set_request_processed+0x50/0x78 [cfg80211] [<bf28bd84>] set_regdom+0x550/0x600 [cfg80211] [<bf294cd8>] nl80211_set_reg+0x218/0x258 [cfg80211] [<c03c7738>] genl_rcv_msg+0x1a8/0x1e8 [<c03c6a00>] netlink_rcv_skb+0x5c/0xc0 [<c03c7584>] genl_rcv+0x28/0x34 [<c03c6720>] netlink_unicast+0x15c/0x228 [<c03c6c7c>] netlink_sendmsg+0x218/0x298 [<c03933c8>] sock_sendmsg+0xa4/0xc0 [<c039406c>] __sys_sendmsg+0x1e4/0x268 [<c0394228>] sys_sendmsg+0x4c/0x70 [<c0013840>] ret_fast_syscall+0x0/0x3c -> #1 (reg_mutex){+.+.+.}: [<c008fd44>] validate_chain+0xb94/0x10f0 [<c0090b68>] __lock_acquire+0x8c8/0x9b0 [<c0090d40>] lock_acquire+0xf0/0x114 [<c04734dc>] mutex_lock_nested+0x48/0x320 [<bf28b2cc>] reg_todo+0x30/0x538 [cfg80211] [<c0059f44>] process_one_work+0x2a0/0x480 [<c005a4b4>] worker_thread+0x1bc/0x2bc [<c0061148>] kthread+0x98/0xa4 [<c0014af4>] kernel_thread_exit+0x0/0x8 -> #0 (cfg80211_mutex){+.+.+.}: [<c008ed58>] print_circular_bug+0x68/0x2cc [<c008fb28>] validate_chain+0x978/0x10f0 [<c0090b68>] __lock_acquire+0x8c8/0x9b0 [<c0090d40>] lock_acquire+0xf0/0x114 [<c04734dc>] mutex_lock_nested+0x48/0x320 [<bf28ae00>] restore_regulatory_settings+0x34/0x418 [cfg80211] [<bf28b200>] reg_timeout_work+0x1c/0x20 [cfg80211] [<c0059f44>] process_one_work+0x2a0/0x480 [<c005a4b4>] worker_thread+0x1bc/0x2bc [<c0061148>] kthread+0x98/0xa4 [<c0014af4>] kernel_thread_exit+0x0/0x8 other info that might help us debug this: Chain exists of: cfg80211_mutex --> reg_mutex --> (reg_timeout).work Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock((reg_timeout).work); lock(reg_mutex); lock((reg_timeout).work); lock(cfg80211_mutex); *** DEADLOCK *** 2 locks held by kworker/0:2/1391: #0: (events){.+.+.+}, at: [<c0059e94>] process_one_work+0x1f0/0x480 #1: ((reg_timeout).work){+.+...}, at: [<c0059e94>] process_one_work+0x1f0/0x480 stack backtrace: [<c001b928>] (unwind_backtrace+0x0/0x12c) from [<c0471d3c>] (dump_stack+0x20/0x24) [<c0471d3c>] (dump_stack+0x20/0x24) from [<c008ef70>] (print_circular_bug+0x280/0x2cc) [<c008ef70>] (print_circular_bug+0x280/0x2cc) from [<c008fb28>] (validate_chain+0x978/0x10f0) [<c008fb28>] (validate_chain+0x978/0x10f0) from [<c0090b68>] (__lock_acquire+0x8c8/0x9b0) [<c0090b68>] (__lock_acquire+0x8c8/0x9b0) from [<c0090d40>] (lock_acquire+0xf0/0x114) [<c0090d40>] (lock_acquire+0xf0/0x114) from [<c04734dc>] (mutex_lock_nested+0x48/0x320) [<c04734dc>] (mutex_lock_nested+0x48/0x320) from [<bf28ae00>] (restore_regulatory_settings+0x34/0x418 [cfg80211]) [<bf28ae00>] (restore_regulatory_settings+0x34/0x418 [cfg80211]) from [<bf28b200>] (reg_timeout_work+0x1c/0x20 [cfg80211]) [<bf28b200>] (reg_timeout_work+0x1c/0x20 [cfg80211]) from [<c0059f44>] (process_one_work+0x2a0/0x480) [<c0059f44>] (process_one_work+0x2a0/0x480) from [<c005a4b4>] (worker_thread+0x1bc/0x2bc) [<c005a4b4>] (worker_thread+0x1bc/0x2bc) from [<c0061148>] (kthread+0x98/0xa4) [<c0061148>] (kthread+0x98/0xa4) from [<c0014af4>] (kernel_thread_exit+0x0/0x8) cfg80211: Calling CRDA to update world regulatory domain cfg80211: World regulatory domain updated: cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) Signed-off-by: Eliad Peller <eliad@wizery.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

commit fe20b39 upstream. reg_timeout_work() calls restore_regulatory_settings() which takes cfg80211_mutex. reg_set_request_processed() already holds cfg80211_mutex before calling cancel_delayed_work_sync(reg_timeout), so it might deadlock. Call the async cancel_delayed_work instead, in order to avoid the potential deadlock. This is the relevant lockdep warning: cfg80211: Calling CRDA for country: XX ====================================================== [ INFO: possible circular locking dependency detected ] 3.4.0-rc5-wl+ torvalds#26 Not tainted ------------------------------------------------------- kworker/0:2/1391 is trying to acquire lock: (cfg80211_mutex){+.+.+.}, at: [<bf28ae00>] restore_regulatory_settings+0x34/0x418 [cfg80211] but task is already holding lock: ((reg_timeout).work){+.+...}, at: [<c0059e94>] process_one_work+0x1f0/0x480 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> koenkooi#2 ((reg_timeout).work){+.+...}: [<c008fd44>] validate_chain+0xb94/0x10f0 [<c0090b68>] __lock_acquire+0x8c8/0x9b0 [<c0090d40>] lock_acquire+0xf0/0x114 [<c005b600>] wait_on_work+0x4c/0x154 [<c005c000>] __cancel_work_timer+0xd4/0x11c [<c005c064>] cancel_delayed_work_sync+0x1c/0x20 [<bf28b274>] reg_set_request_processed+0x50/0x78 [cfg80211] [<bf28bd84>] set_regdom+0x550/0x600 [cfg80211] [<bf294cd8>] nl80211_set_reg+0x218/0x258 [cfg80211] [<c03c7738>] genl_rcv_msg+0x1a8/0x1e8 [<c03c6a00>] netlink_rcv_skb+0x5c/0xc0 [<c03c7584>] genl_rcv+0x28/0x34 [<c03c6720>] netlink_unicast+0x15c/0x228 [<c03c6c7c>] netlink_sendmsg+0x218/0x298 [<c03933c8>] sock_sendmsg+0xa4/0xc0 [<c039406c>] __sys_sendmsg+0x1e4/0x268 [<c0394228>] sys_sendmsg+0x4c/0x70 [<c0013840>] ret_fast_syscall+0x0/0x3c -> koenkooi#1 (reg_mutex){+.+.+.}: [<c008fd44>] validate_chain+0xb94/0x10f0 [<c0090b68>] __lock_acquire+0x8c8/0x9b0 [<c0090d40>] lock_acquire+0xf0/0x114 [<c04734dc>] mutex_lock_nested+0x48/0x320 [<bf28b2cc>] reg_todo+0x30/0x538 [cfg80211] [<c0059f44>] process_one_work+0x2a0/0x480 [<c005a4b4>] worker_thread+0x1bc/0x2bc [<c0061148>] kthread+0x98/0xa4 [<c0014af4>] kernel_thread_exit+0x0/0x8 -> #0 (cfg80211_mutex){+.+.+.}: [<c008ed58>] print_circular_bug+0x68/0x2cc [<c008fb28>] validate_chain+0x978/0x10f0 [<c0090b68>] __lock_acquire+0x8c8/0x9b0 [<c0090d40>] lock_acquire+0xf0/0x114 [<c04734dc>] mutex_lock_nested+0x48/0x320 [<bf28ae00>] restore_regulatory_settings+0x34/0x418 [cfg80211] [<bf28b200>] reg_timeout_work+0x1c/0x20 [cfg80211] [<c0059f44>] process_one_work+0x2a0/0x480 [<c005a4b4>] worker_thread+0x1bc/0x2bc [<c0061148>] kthread+0x98/0xa4 [<c0014af4>] kernel_thread_exit+0x0/0x8 other info that might help us debug this: Chain exists of: cfg80211_mutex --> reg_mutex --> (reg_timeout).work Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock((reg_timeout).work); lock(reg_mutex); lock((reg_timeout).work); lock(cfg80211_mutex); *** DEADLOCK *** 2 locks held by kworker/0:2/1391: #0: (events){.+.+.+}, at: [<c0059e94>] process_one_work+0x1f0/0x480 koenkooi#1: ((reg_timeout).work){+.+...}, at: [<c0059e94>] process_one_work+0x1f0/0x480 stack backtrace: [<c001b928>] (unwind_backtrace+0x0/0x12c) from [<c0471d3c>] (dump_stack+0x20/0x24) [<c0471d3c>] (dump_stack+0x20/0x24) from [<c008ef70>] (print_circular_bug+0x280/0x2cc) [<c008ef70>] (print_circular_bug+0x280/0x2cc) from [<c008fb28>] (validate_chain+0x978/0x10f0) [<c008fb28>] (validate_chain+0x978/0x10f0) from [<c0090b68>] (__lock_acquire+0x8c8/0x9b0) [<c0090b68>] (__lock_acquire+0x8c8/0x9b0) from [<c0090d40>] (lock_acquire+0xf0/0x114) [<c0090d40>] (lock_acquire+0xf0/0x114) from [<c04734dc>] (mutex_lock_nested+0x48/0x320) [<c04734dc>] (mutex_lock_nested+0x48/0x320) from [<bf28ae00>] (restore_regulatory_settings+0x34/0x418 [cfg80211]) [<bf28ae00>] (restore_regulatory_settings+0x34/0x418 [cfg80211]) from [<bf28b200>] (reg_timeout_work+0x1c/0x20 [cfg80211]) [<bf28b200>] (reg_timeout_work+0x1c/0x20 [cfg80211]) from [<c0059f44>] (process_one_work+0x2a0/0x480) [<c0059f44>] (process_one_work+0x2a0/0x480) from [<c005a4b4>] (worker_thread+0x1bc/0x2bc) [<c005a4b4>] (worker_thread+0x1bc/0x2bc) from [<c0061148>] (kthread+0x98/0xa4) [<c0061148>] (kthread+0x98/0xa4) from [<c0014af4>] (kernel_thread_exit+0x0/0x8) cfg80211: Calling CRDA to update world regulatory domain cfg80211: World regulatory domain updated: cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) Signed-off-by: Eliad Peller <eliad@wizery.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

======================================================= [ INFO: possible circular locking dependency detected ] 3.0.0-rc3+ linux-sunxi#26 ------------------------------------------------------- ip/1104 is trying to acquire lock: (local_softirq_lock){+.+...}, at: [<ffffffff81056d12>] __local_lock+0x25/0x68 but task is already holding lock: (sk_lock-AF_INET){+.+...}, at: [<ffffffff81433308>] lock_sock+0x10/0x12 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> linux-sunxi#1 (sk_lock-AF_INET){+.+...}: [<ffffffff810836e5>] lock_acquire+0x103/0x12e [<ffffffff813e2781>] lock_sock_nested+0x82/0x92 [<ffffffff81433308>] lock_sock+0x10/0x12 [<ffffffff81433afa>] tcp_close+0x1b/0x355 [<ffffffff81453c99>] inet_release+0xc3/0xcd [<ffffffff813dff3f>] sock_release+0x1f/0x74 [<ffffffff813dffbb>] sock_close+0x27/0x2b [<ffffffff81129c63>] fput+0x11d/0x1e3 [<ffffffff81126577>] filp_close+0x70/0x7b [<ffffffff8112667a>] sys_close+0xf8/0x13d [<ffffffff814ae882>] system_call_fastpath+0x16/0x1b -> #0 (local_softirq_lock){+.+...}: [<ffffffff81082ecc>] __lock_acquire+0xacc/0xdc8 [<ffffffff810836e5>] lock_acquire+0x103/0x12e [<ffffffff814a7e40>] _raw_spin_lock+0x3b/0x4a [<ffffffff81056d12>] __local_lock+0x25/0x68 [<ffffffff81056d8b>] local_bh_disable+0x36/0x3b [<ffffffff814a7fc4>] _raw_write_lock_bh+0x16/0x4f [<ffffffff81433c38>] tcp_close+0x159/0x355 [<ffffffff81453c99>] inet_release+0xc3/0xcd [<ffffffff813dff3f>] sock_release+0x1f/0x74 [<ffffffff813dffbb>] sock_close+0x27/0x2b [<ffffffff81129c63>] fput+0x11d/0x1e3 [<ffffffff81126577>] filp_close+0x70/0x7b [<ffffffff8112667a>] sys_close+0xf8/0x13d [<ffffffff814ae882>] system_call_fastpath+0x16/0x1b other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(sk_lock-AF_INET); lock(local_softirq_lock); lock(sk_lock-AF_INET); lock(local_softirq_lock); *** DEADLOCK *** 1 lock held by ip/1104: #0: (sk_lock-AF_INET){+.+...}, at: [<ffffffff81433308>] lock_sock+0x10/0x12 stack backtrace: Pid: 1104, comm: ip Not tainted 3.0.0-rc3+ linux-sunxi#26 Call Trace: [<ffffffff81081649>] print_circular_bug+0x1f8/0x209 [<ffffffff81082ecc>] __lock_acquire+0xacc/0xdc8 [<ffffffff81056d12>] ? __local_lock+0x25/0x68 [<ffffffff810836e5>] lock_acquire+0x103/0x12e [<ffffffff81056d12>] ? __local_lock+0x25/0x68 [<ffffffff81046c75>] ? get_parent_ip+0x11/0x41 [<ffffffff814a7e40>] _raw_spin_lock+0x3b/0x4a [<ffffffff81056d12>] ? __local_lock+0x25/0x68 [<ffffffff81046c8c>] ? get_parent_ip+0x28/0x41 [<ffffffff81056d12>] __local_lock+0x25/0x68 [<ffffffff81056d8b>] local_bh_disable+0x36/0x3b [<ffffffff81433308>] ? lock_sock+0x10/0x12 [<ffffffff814a7fc4>] _raw_write_lock_bh+0x16/0x4f [<ffffffff81433c38>] tcp_close+0x159/0x355 [<ffffffff81453c99>] inet_release+0xc3/0xcd [<ffffffff813dff3f>] sock_release+0x1f/0x74 [<ffffffff813dffbb>] sock_close+0x27/0x2b [<ffffffff81129c63>] fput+0x11d/0x1e3 [<ffffffff81126577>] filp_close+0x70/0x7b [<ffffffff8112667a>] sys_close+0xf8/0x13d [<ffffffff814ae882>] system_call_fastpath+0x16/0x1b Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

Printing the "start_ip" for every secondary cpu is very noisy on a large system - and doesn't add any value. Drop this message. Console log before: Booting Node 0, Processors #1 smpboot cpu 1: start_ip = 96000 #2 smpboot cpu 2: start_ip = 96000 #3 smpboot cpu 3: start_ip = 96000 #4 smpboot cpu 4: start_ip = 96000 ... torvalds#31 smpboot cpu 31: start_ip = 96000 Brought up 32 CPUs Console log after: Booting Node 0, Processors #1 #2 #3 #4 #5 torvalds#6 torvalds#7 Ok. Booting Node 1, Processors torvalds#8 torvalds#9 torvalds#10 torvalds#11 torvalds#12 torvalds#13 torvalds#14 torvalds#15 Ok. Booting Node 0, Processors torvalds#16 torvalds#17 torvalds#18 torvalds#19 torvalds#20 torvalds#21 torvalds#22 torvalds#23 Ok. Booting Node 1, Processors torvalds#24 torvalds#25 torvalds#26 torvalds#27 torvalds#28 torvalds#29 torvalds#30 torvalds#31 Brought up 32 CPUs Acked-by: Borislav Petkov <bp@amd64.org> Signed-off-by: Tony Luck <tony.luck@intel.com> Link: http://lkml.kernel.org/r/4f452eb42507460426@agluck-desktop.sc.intel.com Signed-off-by: H. Peter Anvin <hpa@zytor.com>

commit fe20b39 upstream. reg_timeout_work() calls restore_regulatory_settings() which takes cfg80211_mutex. reg_set_request_processed() already holds cfg80211_mutex before calling cancel_delayed_work_sync(reg_timeout), so it might deadlock. Call the async cancel_delayed_work instead, in order to avoid the potential deadlock. This is the relevant lockdep warning: cfg80211: Calling CRDA for country: XX ====================================================== [ INFO: possible circular locking dependency detected ] 3.4.0-rc5-wl+ torvalds#26 Not tainted ------------------------------------------------------- kworker/0:2/1391 is trying to acquire lock: (cfg80211_mutex){+.+.+.}, at: [<bf28ae00>] restore_regulatory_settings+0x34/0x418 [cfg80211] but task is already holding lock: ((reg_timeout).work){+.+...}, at: [<c0059e94>] process_one_work+0x1f0/0x480 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 ((reg_timeout).work){+.+...}: [<c008fd44>] validate_chain+0xb94/0x10f0 [<c0090b68>] __lock_acquire+0x8c8/0x9b0 [<c0090d40>] lock_acquire+0xf0/0x114 [<c005b600>] wait_on_work+0x4c/0x154 [<c005c000>] __cancel_work_timer+0xd4/0x11c [<c005c064>] cancel_delayed_work_sync+0x1c/0x20 [<bf28b274>] reg_set_request_processed+0x50/0x78 [cfg80211] [<bf28bd84>] set_regdom+0x550/0x600 [cfg80211] [<bf294cd8>] nl80211_set_reg+0x218/0x258 [cfg80211] [<c03c7738>] genl_rcv_msg+0x1a8/0x1e8 [<c03c6a00>] netlink_rcv_skb+0x5c/0xc0 [<c03c7584>] genl_rcv+0x28/0x34 [<c03c6720>] netlink_unicast+0x15c/0x228 [<c03c6c7c>] netlink_sendmsg+0x218/0x298 [<c03933c8>] sock_sendmsg+0xa4/0xc0 [<c039406c>] __sys_sendmsg+0x1e4/0x268 [<c0394228>] sys_sendmsg+0x4c/0x70 [<c0013840>] ret_fast_syscall+0x0/0x3c -> #1 (reg_mutex){+.+.+.}: [<c008fd44>] validate_chain+0xb94/0x10f0 [<c0090b68>] __lock_acquire+0x8c8/0x9b0 [<c0090d40>] lock_acquire+0xf0/0x114 [<c04734dc>] mutex_lock_nested+0x48/0x320 [<bf28b2cc>] reg_todo+0x30/0x538 [cfg80211] [<c0059f44>] process_one_work+0x2a0/0x480 [<c005a4b4>] worker_thread+0x1bc/0x2bc [<c0061148>] kthread+0x98/0xa4 [<c0014af4>] kernel_thread_exit+0x0/0x8 -> #0 (cfg80211_mutex){+.+.+.}: [<c008ed58>] print_circular_bug+0x68/0x2cc [<c008fb28>] validate_chain+0x978/0x10f0 [<c0090b68>] __lock_acquire+0x8c8/0x9b0 [<c0090d40>] lock_acquire+0xf0/0x114 [<c04734dc>] mutex_lock_nested+0x48/0x320 [<bf28ae00>] restore_regulatory_settings+0x34/0x418 [cfg80211] [<bf28b200>] reg_timeout_work+0x1c/0x20 [cfg80211] [<c0059f44>] process_one_work+0x2a0/0x480 [<c005a4b4>] worker_thread+0x1bc/0x2bc [<c0061148>] kthread+0x98/0xa4 [<c0014af4>] kernel_thread_exit+0x0/0x8 other info that might help us debug this: Chain exists of: cfg80211_mutex --> reg_mutex --> (reg_timeout).work Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock((reg_timeout).work); lock(reg_mutex); lock((reg_timeout).work); lock(cfg80211_mutex); *** DEADLOCK *** 2 locks held by kworker/0:2/1391: #0: (events){.+.+.+}, at: [<c0059e94>] process_one_work+0x1f0/0x480 #1: ((reg_timeout).work){+.+...}, at: [<c0059e94>] process_one_work+0x1f0/0x480 stack backtrace: [<c001b928>] (unwind_backtrace+0x0/0x12c) from [<c0471d3c>] (dump_stack+0x20/0x24) [<c0471d3c>] (dump_stack+0x20/0x24) from [<c008ef70>] (print_circular_bug+0x280/0x2cc) [<c008ef70>] (print_circular_bug+0x280/0x2cc) from [<c008fb28>] (validate_chain+0x978/0x10f0) [<c008fb28>] (validate_chain+0x978/0x10f0) from [<c0090b68>] (__lock_acquire+0x8c8/0x9b0) [<c0090b68>] (__lock_acquire+0x8c8/0x9b0) from [<c0090d40>] (lock_acquire+0xf0/0x114) [<c0090d40>] (lock_acquire+0xf0/0x114) from [<c04734dc>] (mutex_lock_nested+0x48/0x320) [<c04734dc>] (mutex_lock_nested+0x48/0x320) from [<bf28ae00>] (restore_regulatory_settings+0x34/0x418 [cfg80211]) [<bf28ae00>] (restore_regulatory_settings+0x34/0x418 [cfg80211]) from [<bf28b200>] (reg_timeout_work+0x1c/0x20 [cfg80211]) [<bf28b200>] (reg_timeout_work+0x1c/0x20 [cfg80211]) from [<c0059f44>] (process_one_work+0x2a0/0x480) [<c0059f44>] (process_one_work+0x2a0/0x480) from [<c005a4b4>] (worker_thread+0x1bc/0x2bc) [<c005a4b4>] (worker_thread+0x1bc/0x2bc) from [<c0061148>] (kthread+0x98/0xa4) [<c0061148>] (kthread+0x98/0xa4) from [<c0014af4>] (kernel_thread_exit+0x0/0x8) cfg80211: Calling CRDA to update world regulatory domain cfg80211: World regulatory domain updated: cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) Signed-off-by: Eliad Peller <eliad@wizery.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

commit fe20b39 upstream. reg_timeout_work() calls restore_regulatory_settings() which takes cfg80211_mutex. reg_set_request_processed() already holds cfg80211_mutex before calling cancel_delayed_work_sync(reg_timeout), so it might deadlock. Call the async cancel_delayed_work instead, in order to avoid the potential deadlock. This is the relevant lockdep warning: cfg80211: Calling CRDA for country: XX ====================================================== [ INFO: possible circular locking dependency detected ] 3.4.0-rc5-wl+ torvalds#26 Not tainted ------------------------------------------------------- kworker/0:2/1391 is trying to acquire lock: (cfg80211_mutex){+.+.+.}, at: [<bf28ae00>] restore_regulatory_settings+0x34/0x418 [cfg80211] but task is already holding lock: ((reg_timeout).work){+.+...}, at: [<c0059e94>] process_one_work+0x1f0/0x480 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 ((reg_timeout).work){+.+...}: [<c008fd44>] validate_chain+0xb94/0x10f0 [<c0090b68>] __lock_acquire+0x8c8/0x9b0 [<c0090d40>] lock_acquire+0xf0/0x114 [<c005b600>] wait_on_work+0x4c/0x154 [<c005c000>] __cancel_work_timer+0xd4/0x11c [<c005c064>] cancel_delayed_work_sync+0x1c/0x20 [<bf28b274>] reg_set_request_processed+0x50/0x78 [cfg80211] [<bf28bd84>] set_regdom+0x550/0x600 [cfg80211] [<bf294cd8>] nl80211_set_reg+0x218/0x258 [cfg80211] [<c03c7738>] genl_rcv_msg+0x1a8/0x1e8 [<c03c6a00>] netlink_rcv_skb+0x5c/0xc0 [<c03c7584>] genl_rcv+0x28/0x34 [<c03c6720>] netlink_unicast+0x15c/0x228 [<c03c6c7c>] netlink_sendmsg+0x218/0x298 [<c03933c8>] sock_sendmsg+0xa4/0xc0 [<c039406c>] __sys_sendmsg+0x1e4/0x268 [<c0394228>] sys_sendmsg+0x4c/0x70 [<c0013840>] ret_fast_syscall+0x0/0x3c -> #1 (reg_mutex){+.+.+.}: [<c008fd44>] validate_chain+0xb94/0x10f0 [<c0090b68>] __lock_acquire+0x8c8/0x9b0 [<c0090d40>] lock_acquire+0xf0/0x114 [<c04734dc>] mutex_lock_nested+0x48/0x320 [<bf28b2cc>] reg_todo+0x30/0x538 [cfg80211] [<c0059f44>] process_one_work+0x2a0/0x480 [<c005a4b4>] worker_thread+0x1bc/0x2bc [<c0061148>] kthread+0x98/0xa4 [<c0014af4>] kernel_thread_exit+0x0/0x8 -> #0 (cfg80211_mutex){+.+.+.}: [<c008ed58>] print_circular_bug+0x68/0x2cc [<c008fb28>] validate_chain+0x978/0x10f0 [<c0090b68>] __lock_acquire+0x8c8/0x9b0 [<c0090d40>] lock_acquire+0xf0/0x114 [<c04734dc>] mutex_lock_nested+0x48/0x320 [<bf28ae00>] restore_regulatory_settings+0x34/0x418 [cfg80211] [<bf28b200>] reg_timeout_work+0x1c/0x20 [cfg80211] [<c0059f44>] process_one_work+0x2a0/0x480 [<c005a4b4>] worker_thread+0x1bc/0x2bc [<c0061148>] kthread+0x98/0xa4 [<c0014af4>] kernel_thread_exit+0x0/0x8 other info that might help us debug this: Chain exists of: cfg80211_mutex --> reg_mutex --> (reg_timeout).work Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock((reg_timeout).work); lock(reg_mutex); lock((reg_timeout).work); lock(cfg80211_mutex); *** DEADLOCK *** 2 locks held by kworker/0:2/1391: #0: (events){.+.+.+}, at: [<c0059e94>] process_one_work+0x1f0/0x480 #1: ((reg_timeout).work){+.+...}, at: [<c0059e94>] process_one_work+0x1f0/0x480 stack backtrace: [<c001b928>] (unwind_backtrace+0x0/0x12c) from [<c0471d3c>] (dump_stack+0x20/0x24) [<c0471d3c>] (dump_stack+0x20/0x24) from [<c008ef70>] (print_circular_bug+0x280/0x2cc) [<c008ef70>] (print_circular_bug+0x280/0x2cc) from [<c008fb28>] (validate_chain+0x978/0x10f0) [<c008fb28>] (validate_chain+0x978/0x10f0) from [<c0090b68>] (__lock_acquire+0x8c8/0x9b0) [<c0090b68>] (__lock_acquire+0x8c8/0x9b0) from [<c0090d40>] (lock_acquire+0xf0/0x114) [<c0090d40>] (lock_acquire+0xf0/0x114) from [<c04734dc>] (mutex_lock_nested+0x48/0x320) [<c04734dc>] (mutex_lock_nested+0x48/0x320) from [<bf28ae00>] (restore_regulatory_settings+0x34/0x418 [cfg80211]) [<bf28ae00>] (restore_regulatory_settings+0x34/0x418 [cfg80211]) from [<bf28b200>] (reg_timeout_work+0x1c/0x20 [cfg80211]) [<bf28b200>] (reg_timeout_work+0x1c/0x20 [cfg80211]) from [<c0059f44>] (process_one_work+0x2a0/0x480) [<c0059f44>] (process_one_work+0x2a0/0x480) from [<c005a4b4>] (worker_thread+0x1bc/0x2bc) [<c005a4b4>] (worker_thread+0x1bc/0x2bc) from [<c0061148>] (kthread+0x98/0xa4) [<c0061148>] (kthread+0x98/0xa4) from [<c0014af4>] (kernel_thread_exit+0x0/0x8) cfg80211: Calling CRDA to update world regulatory domain cfg80211: World regulatory domain updated: cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) Signed-off-by: Eliad Peller <eliad@wizery.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This avoids: Apr 12 23:52:16 homeserver kernel: imon:send_packet: task interrupted Apr 12 23:52:16 homeserver kernel: ------------[ cut here ]------------ Apr 12 23:52:16 homeserver kernel: WARNING: at drivers/usb/core/urb.c:327 usb_submit_urb+0x353/0x370() Apr 12 23:52:16 homeserver kernel: Hardware name: Unknow Apr 12 23:52:16 homeserver kernel: URB f64b6f00 submitted while active Apr 12 23:52:16 homeserver kernel: Modules linked in: Apr 12 23:52:16 homeserver kernel: Pid: 3154, comm: LCDd Not tainted 3.8.6-htpc-00005-g9e6fc5e torvalds#26 Apr 12 23:52:16 homeserver kernel: Call Trace: Apr 12 23:52:16 homeserver kernel: [<c012d778>] ? warn_slowpath_common+0x78/0xb0 Apr 12 23:52:16 homeserver kernel: [<c04136c3>] ? usb_submit_urb+0x353/0x370 Apr 12 23:52:16 homeserver kernel: [<c04136c3>] ? usb_submit_urb+0x353/0x370 Apr 12 23:52:16 homeserver kernel: [<c0447010>] ? imon_ir_change_protocol+0x150/0x150 Apr 12 23:52:16 homeserver kernel: [<c012d843>] ? warn_slowpath_fmt+0x33/0x40 Apr 12 23:52:16 homeserver kernel: [<c04136c3>] ? usb_submit_urb+0x353/0x370 Apr 12 23:52:16 homeserver kernel: [<c0446c67>] ? send_packet+0x97/0x270 Apr 12 23:52:16 homeserver kernel: [<c0446cfe>] ? send_packet+0x12e/0x270 Apr 12 23:52:16 homeserver kernel: [<c05c5743>] ? do_nanosleep+0xa3/0xd0 Apr 12 23:52:16 homeserver kernel: [<c044760e>] ? vfd_write+0xae/0x250 Apr 12 23:52:16 homeserver kernel: [<c0447560>] ? lcd_write+0x180/0x180 Apr 12 23:52:16 homeserver kernel: [<c01b2b19>] ? vfs_write+0x89/0x140 Apr 12 23:52:16 homeserver kernel: [<c01b2dda>] ? sys_write+0x4a/0x90 Apr 12 23:52:16 homeserver kernel: [<c05c7c45>] ? sysenter_do_call+0x12/0x26 Apr 12 23:52:16 homeserver kernel: ---[ end trace a0b6f0fcfd2f9a1d ]--- Apr 12 23:52:16 homeserver kernel: imon:send_packet: error submitting urb(-16) Apr 12 23:52:16 homeserver kernel: imon:vfd_write: send packet #3 failed Apr 12 23:52:16 homeserver kernel: imon:send_packet: error submitting urb(-16) Apr 12 23:52:16 homeserver kernel: imon:vfd_write: send packet #0 failed Signed-off-by: Kevin Baradon <kevin.baradon@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

em28xx is oopsing with some DVB devices: [10856.061884] general protection fault: 0000 [#1] SMP [10856.067041] Modules linked in: rc_hauppauge em28xx_rc xc5000 drxk em28xx_dvb dvb_core em28xx videobuf2_vmalloc videobuf2_memops videobuf2_core rc_pixelview_new tuner_xc2028 tuner cx8800 cx88xx tveeprom btcx_risc videobuf_dma_sg videobuf_core rc_core v4l2_common videodev ebtable_nat ebtables nf_conntrack_ipv4 nf_defrag_ipv4 xt_CHECKSUM be2iscsi iscsi_boot_sysfs iptable_mangle bnx2i cnic uio cxgb4i cxgb4 tun bridge cxgb3i cxgb3 stp ip6t_REJECT mdio libcxgbi nf_conntrack_ipv6 llc nf_defrag_ipv6 ib_iser rdma_cm ib_addr xt_conntrack iw_cm ib_cm ib_sa nf_conntrack ib_mad ib_core bnep bluetooth iscsi_tcp libiscsi_tcp ip6table_filter libiscsi ip6_tables scsi_transport_iscsi xfs libcrc32c snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm tg3 snd_page_alloc snd_timer [10856.139176] snd ptp iTCO_wdt soundcore pps_core iTCO_vendor_support lpc_ich mfd_core coretemp nfsd hp_wmi crc32c_intel microcode serio_raw rfkill sparse_keymap nfs_acl lockd sunrpc kvm_intel kvm uinput binfmt_misc firewire_ohci nouveau mxm_wmi i2c_algo_bit drm_kms_helper firewire_core crc_itu_t ttm drm i2c_core wmi [last unloaded: dib0070] [10856.168969] CPU 1 [10856.170799] Pid: 13606, comm: dvbv5-zap Not tainted 3.9.0-rc5+ #26 Hewlett-Packard HP Z400 Workstation/0AE4h [10856.181187] RIP: 0010:[<ffffffffa0459e47>] [<ffffffffa0459e47>] em28xx_write_regs_req+0x37/0x1c0 [em28xx] [10856.191028] RSP: 0018:ffff880118401a58 EFLAGS: 00010282 [10856.196533] RAX: 00020000012d0000 RBX: ffff88010804aec8 RCX: ffff880118401b14 [10856.203852] RDX: 0000000000000048 RSI: 0000000000000000 RDI: ffff88010804aec8 [10856.211174] RBP: ffff880118401ac8 R08: 0000000000000001 R09: 0000000000000000 [10856.218496] R10: 0000000000000000 R11: 0000000000000006 R12: 0000000000000048 [10856.226026] R13: ffff880118401b14 R14: ffff88011752b258 R15: ffff88011752b258 [10856.233352] FS: 00007f26636d2740(0000) GS:ffff88011fc20000(0000) knlGS:0000000000000000 [10856.241626] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [10856.247565] CR2: 00007f2663716e20 CR3: 00000000c7eb1000 CR4: 00000000000007e0 [10856.254889] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [10856.262215] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [10856.269542] Process dvbv5-zap (pid: 13606, threadinfo ffff880118400000, task ffff8800cd625d40) [10856.278340] Stack: [10856.280564] ffff88011ffe8de8 0000000000000002 0000000000000000 ffff88011ffe9b00 [10856.288191] ffff880118401b14 00ff88011ffe9b08 ffff880100000048 ffffffff8112a52a [10856.295893] 0000000000000001 ffff88010804aec8 0000000000000048 ffff880118401b14 [10856.303521] Call Trace: [10856.306182] [<ffffffff8112a52a>] ? __alloc_pages_nodemask+0x15a/0x960 [10856.312912] [<ffffffffa045a002>] em28xx_write_regs+0x32/0xa0 [em28xx] [10856.319638] [<ffffffffa045a221>] em28xx_write_reg+0x21/0x30 [em28xx] [10856.326279] [<ffffffffa045a2cc>] em28xx_gpio_set+0x9c/0x100 [em28xx] [10856.332919] [<ffffffffa045a3ac>] em28xx_set_mode+0x7c/0x80 [em28xx] [10856.339472] [<ffffffffa03ef032>] em28xx_dvb_bus_ctrl+0x32/0x40 [em28xx_dvb] This is caused by commit c7a45e5, that added support for two I2C buses. A partial fix was applied at 3de09fb, but it doesn't cover all cases, as the DVB core fills fe->dvb->priv with adapter->priv. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

According to Tegra3 Errata v6 torvalds#26 (Rare memory controller deadlock condition) Bug 1013627 Rare memory controller deadlock condition (regarding to EACK) Bug 955082 Change-Id: I696a275b3921e485da195bf4d5f772c2d0050beb Signed-off-by: Haley Teng <hteng@nvidia.com>

With DT-based boot, the GPMC OneNAND sync mode setup does not work correctly. During the async mode setup, sync flags gets incorrectly set in the onenand_async data and the system crashes during the async setup. Also, the sync mode never gets set in gpmc_onenand_data->flags, so even without the crash, the actual sync mode setup would never be called. The patch fixes this by adjusting the gpmc_onenand_data->flags when the data is read from the DT. Also while doing this we force the onenand_async to be always async. The patch enables to use the following DTS chunk (that should correspond the arch/arm/mach-omap2/board-rm680.c board file setup) with Nokia N950, which currently crashes with 3.12-rc1. The crash output can be also found below. &gpmc { ranges = <0 0 0x04000000 0x20000000>; onenand@0,0 { #address-cells = <1>; #size-cells = <1>; reg = <0 0 0x20000000>; gpmc,sync-read; gpmc,sync-write; gpmc,burst-length = <16>; gpmc,burst-read; gpmc,burst-wrap; gpmc,burst-write; gpmc,device-width = <2>; gpmc,mux-add-data = <2>; gpmc,cs-on-ns = <0>; gpmc,cs-rd-off-ns = <87>; gpmc,cs-wr-off-ns = <87>; gpmc,adv-on-ns = <0>; gpmc,adv-rd-off-ns = <10>; gpmc,adv-wr-off-ns = <10>; gpmc,oe-on-ns = <15>; gpmc,oe-off-ns = <87>; gpmc,we-on-ns = <0>; gpmc,we-off-ns = <87>; gpmc,rd-cycle-ns = <112>; gpmc,wr-cycle-ns = <112>; gpmc,access-ns = <81>; gpmc,page-burst-access-ns = <15>; gpmc,bus-turnaround-ns = <0>; gpmc,cycle2cycle-delay-ns = <0>; gpmc,wait-monitoring-ns = <0>; gpmc,clk-activation-ns = <5>; gpmc,wr-data-mux-bus-ns = <30>; gpmc,wr-access-ns = <81>; gpmc,sync-clk-ps = <15000>; }; }; [ 1.467559] GPMC CS0: cs_on : 0 ticks, 0 ns (was 0 ticks) 0 ns [ 1.474822] GPMC CS0: cs_rd_off : 1 ticks, 5 ns (was 24 ticks) 5 ns [ 1.482116] GPMC CS0: cs_wr_off : 14 ticks, 71 ns (was 24 ticks) 71 ns [ 1.489349] GPMC CS0: adv_on : 0 ticks, 0 ns (was 0 ticks) 0 ns [ 1.496582] GPMC CS0: adv_rd_off: 3 ticks, 15 ns (was 3 ticks) 15 ns [ 1.503845] GPMC CS0: adv_wr_off: 3 ticks, 15 ns (was 3 ticks) 15 ns [ 1.511077] GPMC CS0: oe_on : 3 ticks, 15 ns (was 4 ticks) 15 ns [ 1.518310] GPMC CS0: oe_off : 1 ticks, 5 ns (was 24 ticks) 5 ns [ 1.525543] GPMC CS0: we_on : 0 ticks, 0 ns (was 0 ticks) 0 ns [ 1.532806] GPMC CS0: we_off : 8 ticks, 40 ns (was 24 ticks) 40 ns [ 1.540039] GPMC CS0: rd_cycle : 4 ticks, 20 ns (was 29 ticks) 20 ns [ 1.547302] GPMC CS0: wr_cycle : 4 ticks, 20 ns (was 29 ticks) 20 ns [ 1.554504] GPMC CS0: access : 0 ticks, 0 ns (was 23 ticks) 0 ns [ 1.561767] GPMC CS0: page_burst_access: 0 ticks, 0 ns (was 3 ticks) 0 ns [ 1.569641] GPMC CS0: bus_turnaround: 0 ticks, 0 ns (was 0 ticks) 0 ns [ 1.577270] GPMC CS0: cycle2cycle_delay: 0 ticks, 0 ns (was 0 ticks) 0 ns [ 1.585144] GPMC CS0: wait_monitoring: 0 ticks, 0 ns (was 0 ticks) 0 ns [ 1.592834] GPMC CS0: clk_activation: 0 ticks, 0 ns (was 0 ticks) 0 ns [ 1.600463] GPMC CS0: wr_data_mux_bus: 5 ticks, 25 ns (was 8 ticks) 25 ns [ 1.608154] GPMC CS0: wr_access : 0 ticks, 0 ns (was 23 ticks) 0 ns [ 1.615386] GPMC CS0 CLK period is 5 ns (div 1) [ 1.625122] Unhandled fault: external abort on non-linefetch (0x1008) at 0xf009e442 [ 1.633178] Internal error: : 1008 [#1] ARM [ 1.637573] Modules linked in: [ 1.640777] CPU: 0 PID: 1 Comm: swapper Not tainted 3.12.0-rc1-n9xx-los.git-5318619-00006-g4baa700-dirty #26 [ 1.651123] task: ef04c000 ti: ef050000 task.ti: ef050000 [ 1.656799] PC is at gpmc_onenand_setup+0x98/0x1e0 [ 1.661865] LR is at gpmc_cs_set_timings+0x494/0x5a4 [ 1.667083] pc : [<c002e040>] lr : [<c001f384>] psr: 60000113 [ 1.667083] sp : ef051d10 ip : ef051ce0 fp : ef051d94 [ 1.679138] r10: c0caaf60 r9 : ef050000 r8 : ef18b32c [ 1.684631] r7 : f0080000 r6 : c0caaf60 r5 : 00000000 r4 : f009e400 [ 1.691497] r3 : f009e442 r2 : 80050000 r1 : 00000014 r0 : 00000000 [ 1.698333] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel [ 1.706024] Control: 10c5387d Table: af290019 DAC: 00000015 [ 1.712066] Process swapper (pid: 1, stack limit = 0xef050240) [ 1.718200] Stack: (0xef051d10 to 0xef052000) [ 1.722778] 1d00: 00004000 00001402 00000000 00000005 [ 1.731384] 1d20: 00000047 00000000 0000000f 0000000f 00000000 00000028 0000000f 00000005 [ 1.739990] 1d40: 00000000 00000000 00000014 00000014 00000000 00000000 00000000 00000000 [ 1.748596] 1d60: 00000000 00000019 00000000 00000000 ef18b000 ef099c50 c0c8cb30 00000000 [ 1.757171] 1d80: c0488074 c048f868 ef051dcc ef051d98 c024447c c002dfb4 00000000 c048f868 [ 1.765777] 1da0: 00000000 00000000 c010e4a4 c0dbbb7c c0c8cb40 00000000 c0ca2500 c0488074 [ 1.774383] 1dc0: ef051ddc ef051dd0 c01fd508 c0244370 ef051dfc ef051de0 c01fc204 c01fd4f4 [ 1.782989] 1de0: c0c8cb40 c0ca2500 c0c8cb74 00000000 ef051e1c ef051e00 c01fc3b0 c01fc104 [ 1.791595] 1e00: ef0983bc 00000000 c0ca2500 c01fc31c ef051e44 ef051e20 c01fa794 c01fc328 [ 1.800201] 1e20: ef03634c ef0983b0 ef27d534 c0ca2500 ef27d500 c0c9a2f8 ef051e54 ef051e48 [ 1.808807] 1e40: c01fbcfc c01fa744 ef051e84 ef051e58 c01fb838 c01fbce4 c0411df8 c0caa040 [ 1.817413] 1e60: ef051e84 c0ca2500 00000006 c0caa040 00000066 c0488074 ef051e9c ef051e88 [ 1.825988] 1e80: c01fca30 c01fb768 c04975b8 00000006 ef051eac ef051ea0 c01fd728 c01fc9bc [ 1.834594] 1ea0: ef051ebc ef051eb0 c048808c c01fd6e4 ef051f4c ef051ec0 c0008888 c0488080 [ 1.843200] 1ec0: 0000006f c046bae8 00000000 00000000 ef051efc ef051ee0 ef051f04 ef051ee8 [ 1.851806] 1ee0: c046d400 c0181218 c046d410 c18da8d5 c036a8e4 00000066 ef051f4c ef051f08 [ 1.860412] 1f00: c004b9a8 c046d41c c048f840 00000006 00000006 c046b488 00000000 c043ec08 [ 1.869018] 1f20: ef051f4c c04975b8 00000006 c0caa040 00000066 c046d410 c048f85c c048f868 [ 1.877593] 1f40: ef051f94 ef051f50 c046db8c c00087a0 00000006 00000006 c046d410 ffffffff [ 1.886199] 1f60: ffffffff ffffffff ffffffff 00000000 c0348fd0 00000000 00000000 00000000 [ 1.894805] 1f80: 00000000 00000000 ef051fac ef051f98 c0348fe0 c046daa8 00000000 00000000 [ 1.903411] 1fa0: 00000000 ef051fb0 c000e7f8 c0348fdc 00000000 00000000 00000000 00000000 [ 1.912017] 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 1.920623] 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 ffffffff ffffffff [ 1.929199] Backtrace: [ 1.931793] [<c002dfa8>] (gpmc_onenand_setup+0x0/0x1e0) from [<c024447c>] (omap2_onenand_probe+0x118/0x49c) [ 1.942047] [<c0244364>] (omap2_onenand_probe+0x0/0x49c) from [<c01fd508>] (platform_drv_probe+0x20/0x24) [ 1.952117] r8:c0488074 r7:c0ca2500 r6:00000000 r5:c0c8cb40 r4:c0dbbb7c [ 1.959197] [<c01fd4e8>] (platform_drv_probe+0x0/0x24) from [<c01fc204>] (driver_probe_device+0x10c/0x224) [ 1.969360] [<c01fc0f8>] (driver_probe_device+0x0/0x224) from [<c01fc3b0>] (__driver_attach+0x94/0x98) [ 1.979125] r7:00000000 r6:c0c8cb74 r5:c0ca2500 r4:c0c8cb40 [ 1.985107] [<c01fc31c>] (__driver_attach+0x0/0x98) from [<c01fa794>] (bus_for_each_dev+0x5c/0x90) [ 1.994506] r6:c01fc31c r5:c0ca2500 r4:00000000 r3:ef0983bc [ 2.000488] [<c01fa738>] (bus_for_each_dev+0x0/0x90) from [<c01fbcfc>] (driver_attach+0x24/0x28) [ 2.009735] r6:c0c9a2f8 r5:ef27d500 r4:c0ca2500 [ 2.014587] [<c01fbcd8>] (driver_attach+0x0/0x28) from [<c01fb838>] (bus_add_driver+0xdc/0x260) [ 2.023742] [<c01fb75c>] (bus_add_driver+0x0/0x260) from [<c01fca30>] (driver_register+0x80/0xfc) [ 2.033081] r8:c0488074 r7:00000066 r6:c0caa040 r5:00000006 r4:c0ca2500 [ 2.040161] [<c01fc9b0>] (driver_register+0x0/0xfc) from [<c01fd728>] (__platform_driver_register+0x50/0x64) [ 2.050476] r5:00000006 r4:c04975b8 [ 2.054260] [<c01fd6d8>] (__platform_driver_register+0x0/0x64) from [<c048808c>] (omap2_onenand_driver_init+0x18/0x20) [ 2.065490] [<c0488074>] (omap2_onenand_driver_init+0x0/0x20) from [<c0008888>] (do_one_initcall+0xf4/0x150) [ 2.075836] [<c0008794>] (do_one_initcall+0x0/0x150) from [<c046db8c>] (kernel_init_freeable+0xf0/0x1b4) [ 2.085815] [<c046da9c>] (kernel_init_freeable+0x0/0x1b4) from [<c0348fe0>] (kernel_init+0x10/0xec) [ 2.095336] [<c0348fd0>] (kernel_init+0x0/0xec) from [<c000e7f8>] (ret_from_fork+0x14/0x3c) [ 2.104125] r4:00000000 r3:00000000 [ 2.107879] Code: ebffc3ae e2505000 ba00002e e2843042 (e1d320b0) [ 2.114318] ---[ end trace b8ee3e3e5e002451 ]--- Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Tony Lindgren <tony@atomide.com>

As the new x86 CPU bootup printout format code maintainer, I am taking immediate action to improve and clean (and thus indulge my OCD) the reporting of the cores when coming up online. Fix padding to a right-hand alignment, cleanup code and bind reporting width to the max number of supported CPUs on the system, like this: [ 0.074509] smpboot: Booting Node 0, Processors: #1 #2 #3 #4 #5 torvalds#6 torvalds#7 OK [ 0.644008] smpboot: Booting Node 1, Processors: torvalds#8 torvalds#9 torvalds#10 torvalds#11 torvalds#12 torvalds#13 torvalds#14 torvalds#15 OK [ 1.245006] smpboot: Booting Node 2, Processors: torvalds#16 torvalds#17 torvalds#18 torvalds#19 torvalds#20 torvalds#21 torvalds#22 torvalds#23 OK [ 1.864005] smpboot: Booting Node 3, Processors: torvalds#24 torvalds#25 torvalds#26 torvalds#27 torvalds#28 torvalds#29 torvalds#30 torvalds#31 OK [ 2.489005] smpboot: Booting Node 4, Processors: torvalds#32 torvalds#33 torvalds#34 torvalds#35 torvalds#36 torvalds#37 torvalds#38 torvalds#39 OK [ 3.093005] smpboot: Booting Node 5, Processors: torvalds#40 torvalds#41 torvalds#42 torvalds#43 torvalds#44 torvalds#45 torvalds#46 torvalds#47 OK [ 3.698005] smpboot: Booting Node 6, Processors: torvalds#48 torvalds#49 torvalds#50 torvalds#51 #52 #53 torvalds#54 torvalds#55 OK [ 4.304005] smpboot: Booting Node 7, Processors: torvalds#56 torvalds#57 #58 torvalds#59 torvalds#60 torvalds#61 torvalds#62 torvalds#63 OK [ 4.961413] Brought up 64 CPUs and this: [ 0.072367] smpboot: Booting Node 0, Processors: #1 #2 #3 #4 #5 torvalds#6 torvalds#7 OK [ 0.686329] Brought up 8 CPUs Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Libin <huawei.libin@huawei.com> Cc: wangyijing@huawei.com Cc: fenghua.yu@intel.com Cc: guohanjun@huawei.com Cc: paul.gortmaker@windriver.com Link: http://lkml.kernel.org/r/20130927143554.GF4422@pd.tnic Signed-off-by: Ingo Molnar <mingo@kernel.org>

Turn it into (for example): [ 0.073380] x86: Booting SMP configuration: [ 0.074005] .... node #0, CPUs: #1 #2 #3 #4 #5 torvalds#6 torvalds#7 [ 0.603005] .... node #1, CPUs: torvalds#8 torvalds#9 torvalds#10 torvalds#11 torvalds#12 torvalds#13 torvalds#14 torvalds#15 [ 1.200005] .... node #2, CPUs: torvalds#16 torvalds#17 torvalds#18 torvalds#19 torvalds#20 torvalds#21 torvalds#22 torvalds#23 [ 1.796005] .... node #3, CPUs: torvalds#24 torvalds#25 torvalds#26 torvalds#27 torvalds#28 torvalds#29 torvalds#30 torvalds#31 [ 2.393005] .... node #4, CPUs: torvalds#32 torvalds#33 torvalds#34 torvalds#35 torvalds#36 torvalds#37 torvalds#38 torvalds#39 [ 2.996005] .... node #5, CPUs: torvalds#40 torvalds#41 torvalds#42 torvalds#43 torvalds#44 torvalds#45 torvalds#46 torvalds#47 [ 3.600005] .... node torvalds#6, CPUs: torvalds#48 torvalds#49 torvalds#50 torvalds#51 #52 #53 torvalds#54 torvalds#55 [ 4.202005] .... node torvalds#7, CPUs: torvalds#56 torvalds#57 #58 torvalds#59 torvalds#60 torvalds#61 torvalds#62 torvalds#63 [ 4.811005] .... node torvalds#8, CPUs: torvalds#64 torvalds#65 torvalds#66 torvalds#67 torvalds#68 torvalds#69 #70 torvalds#71 [ 5.421006] .... node torvalds#9, CPUs: torvalds#72 torvalds#73 torvalds#74 torvalds#75 torvalds#76 torvalds#77 torvalds#78 torvalds#79 [ 6.032005] .... node torvalds#10, CPUs: torvalds#80 torvalds#81 torvalds#82 torvalds#83 torvalds#84 torvalds#85 torvalds#86 torvalds#87 [ 6.648006] .... node torvalds#11, CPUs: torvalds#88 torvalds#89 torvalds#90 torvalds#91 torvalds#92 torvalds#93 torvalds#94 torvalds#95 [ 7.262005] .... node torvalds#12, CPUs: torvalds#96 torvalds#97 torvalds#98 torvalds#99 torvalds#100 torvalds#101 torvalds#102 torvalds#103 [ 7.865005] .... node torvalds#13, CPUs: torvalds#104 torvalds#105 torvalds#106 torvalds#107 torvalds#108 torvalds#109 torvalds#110 torvalds#111 [ 8.466005] .... node torvalds#14, CPUs: torvalds#112 torvalds#113 torvalds#114 torvalds#115 torvalds#116 torvalds#117 torvalds#118 torvalds#119 [ 9.073006] .... node torvalds#15, CPUs: torvalds#120 torvalds#121 torvalds#122 torvalds#123 torvalds#124 torvalds#125 torvalds#126 torvalds#127 [ 9.679901] x86: Booted up 16 nodes, 128 CPUs and drop useless elements. Change num_digits() to hpa's division-avoiding, cell-phone-typed version which he went at great lengths and pains to submit on a Saturday evening. Signed-off-by: Borislav Petkov <bp@suse.de> Cc: huawei.libin@huawei.com Cc: wangyijing@huawei.com Cc: fenghua.yu@intel.com Cc: guohanjun@huawei.com Cc: paul.gortmaker@windriver.com Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20130930095624.GB16383@pd.tnic Signed-off-by: Ingo Molnar <mingo@kernel.org>

…culation Currently mx53 (CortexA8) running at 1GHz reports: Calibrating delay loop... 663.55 BogoMIPS (lpj=3317760) Tom Evans verified that alignments of 0x0 and 0x8 run the two instructions of __loop_delay in one clock cycle (1 clock/loop), while alignments of 0x4 and 0xc take 3 clocks to run the loop twice. (1.5 clock/loop) The original object code looks like this: 00000010 <__loop_const_udelay>: 10: e3e01000 mvn r1, #0 14: e51f201c ldr r2, [pc, #-28] ; 0 <__loop_udelay-0x8> 18: e5922000 ldr r2, [r2] 1c: e0800921 add r0, r0, r1, lsr #18 20: e1a00720 lsr r0, r0, #14 24: e0822b21 add r2, r2, r1, lsr #22 28: e1a02522 lsr r2, r2, #10 2c: e0000092 mul r0, r2, r0 30: e0800d21 add r0, r0, r1, lsr #26 34: e1b00320 lsrs r0, r0, #6 38: 01a0f00e moveq pc, lr 0000003c <__loop_delay>: 3c: e2500001 subs r0, r0, #1 40: 8afffffe bhi 3c <__loop_delay> 44: e1a0f00e mov pc, lr After adding the 'align 3' directive to __loop_delay (align to 8 bytes): 00000010 <__loop_const_udelay>: 10: e3e01000 mvn r1, #0 14: e51f201c ldr r2, [pc, #-28] ; 0 <__loop_udelay-0x8> 18: e5922000 ldr r2, [r2] 1c: e0800921 add r0, r0, r1, lsr #18 20: e1a00720 lsr r0, r0, #14 24: e0822b21 add r2, r2, r1, lsr #22 28: e1a02522 lsr r2, r2, #10 2c: e0000092 mul r0, r2, r0 30: e0800d21 add r0, r0, r1, lsr #26 34: e1b00320 lsrs r0, r0, #6 38: 01a0f00e moveq pc, lr 3c: e320f000 nop {0} 00000040 <__loop_delay>: 40: e2500001 subs r0, r0, #1 44: 8afffffe bhi 40 <__loop_delay> 48: e1a0f00e mov pc, lr 4c: e320f000 nop {0} , which now reports: Calibrating delay loop... 996.14 BogoMIPS (lpj=4980736) Some more test results: On mx31 (ARM1136) running at 532 MHz, before the patch: Calibrating delay loop... 351.43 BogoMIPS (lpj=1757184) On mx31 (ARM1136) running at 532 MHz after the patch: Calibrating delay loop... 528.79 BogoMIPS (lpj=2643968) Also tested on mx6 (CortexA9) and on mx27 (ARM926), which shows the same BogoMIPS value before and after this patch. Reported-by: Tom Evans <tom_usenet@optusnet.com.au> Suggested-by: Tom Evans <tom_usenet@optusnet.com.au> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

…d problems with booting Without that change booting leads to crash with more warnings like below: [ 0.284454] omap_hwmod: uart4: cannot clk_get main_clk uart4_fck [ 0.284484] omap_hwmod: uart4: cannot _init_clocks [ 0.284484] ------------[ cut here ]------------ [ 0.284545] WARNING: CPU: 0 PID: 1 at arch/arm/mach-omap2/omap_hwmod.c:2543 _init+0x300/0x3e4() [ 0.284545] omap_hwmod: uart4: couldn't init clocks [ 0.284576] Modules linked in: [ 0.284606] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.13.0-next-20140124-00020-gd2aefec-dirty #26 [ 0.284637] [<c00151c0>] (unwind_backtrace) from [<c0011e20>] (show_stack+0x10/0x14) [ 0.284667] [<c0011e20>] (show_stack) from [<c0568544>] (dump_stack+0x7c/0x94) [ 0.284729] [<c0568544>] (dump_stack) from [<c003ff94>] (warn_slowpath_common+0x6c/0x90) [ 0.284729] [<c003ff94>] (warn_slowpath_common) from [<c003ffe8>] (warn_slowpath_fmt+0x30/0x40) [ 0.284759] [<c003ffe8>] (warn_slowpath_fmt) from [<c07d1be8>] (_init+0x300/0x3e4) [ 0.284790] [<c07d1be8>] (_init) from [<c07d217c>] (__omap_hwmod_setup_all+0x40/0x8c) [ 0.284820] [<c07d217c>] (__omap_hwmod_setup_all) from [<c0008918>] (do_one_initcall+0xe8/0x14c) [ 0.284851] [<c0008918>] (do_one_initcall) from [<c07c5c18>] (kernel_init_freeable+0x104/0x1c8) [ 0.284881] [<c07c5c18>] (kernel_init_freeable) from [<c0563524>] (kernel_init+0x8/0x118) [ 0.284912] [<c0563524>] (kernel_init) from [<c000e368>] (ret_from_fork+0x14/0x2c) [ 0.285064] ---[ end trace 63de210ad43b627d ]--- Reference: https://lkml.org/lkml/2013/10/8/553 Signed-off-by: Marek Belisko <marek@goldelico.com> Signed-off-by: Tony Lindgren <tony@atomide.com>

WARNING: braces {} are not necessary for single statement blocks torvalds#26: FILE: fs/ocfs2/locks.c:85: + if (ret) { + ocfs2_file_unlock(file); + } total: 0 errors, 1 warnings, 9 lines checked ./patches/ocfs2-flock-drop-cross-node-lock-when-failed-locally.patch has style problems, please review. If any of these errors are false positives, please report them to the maintainer, see CHECKPATCH in MAINTAINERS. Please run checkpatch prior to sending patches Cc: Joel Becker <jlbec@evilplan.org> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Wengang Wang <wen.gang.wang@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

@len

While implementing atomic_write_len, 4d3773c ("kernfs: implement kernfs_ops->atomic_write_len") moved data copy from userland inside kernfs_get_active() and kernfs_open_file->mutex so that kernfs_ops->atomic_write_len can be accessed before copying buffer from userland; unfortunately, this could lead to locking order inversion involving mmap_sem if copy_from_user() takes a page fault. ====================================================== [ INFO: possible circular locking dependency detected ] 3.14.0-rc4-next-20140228-sasha-00011-g4077c67-dirty torvalds#26 Tainted: G W ------------------------------------------------------- trinity-c236/10658 is trying to acquire lock: (&of->mutex#2){+.+.+.}, at: [<fs/kernfs/file.c:487>] kernfs_fop_mmap+0x54/0x120 but task is already holding lock: (&mm->mmap_sem){++++++}, at: [<mm/util.c:397>] vm_mmap_pgoff+0x6e/0xe0 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&mm->mmap_sem){++++++}: [<kernel/locking/lockdep.c:1945 kernel/locking/lockdep.c:2131>] validate_chain+0x6c5/0x7b0 [<kernel/locking/lockdep.c:3182>] __lock_acquire+0x4cd/0x5a0 [<arch/x86/include/asm/current.h:14 kernel/locking/lockdep.c:3602>] lock_acquire+0x182/0x1d0 [<mm/memory.c:4188>] might_fault+0x7e/0xb0 [<arch/x86/include/asm/uaccess.h:713 fs/kernfs/file.c:291>] kernfs_fop_write+0xd8/0x190 [<fs/read_write.c:473>] vfs_write+0xe3/0x1d0 [<fs/read_write.c:523 fs/read_write.c:515>] SyS_write+0x5d/0xa0 [<arch/x86/kernel/entry_64.S:749>] tracesys+0xdd/0xe2 -> #0 (&of->mutex#2){+.+.+.}: [<kernel/locking/lockdep.c:1840>] check_prev_add+0x13f/0x560 [<kernel/locking/lockdep.c:1945 kernel/locking/lockdep.c:2131>] validate_chain+0x6c5/0x7b0 [<kernel/locking/lockdep.c:3182>] __lock_acquire+0x4cd/0x5a0 [<arch/x86/include/asm/current.h:14 kernel/locking/lockdep.c:3602>] lock_acquire+0x182/0x1d0 [<kernel/locking/mutex.c:470 kernel/locking/mutex.c:571>] mutex_lock_nested+0x6a/0x510 [<fs/kernfs/file.c:487>] kernfs_fop_mmap+0x54/0x120 [<mm/mmap.c:1573>] mmap_region+0x310/0x5c0 [<mm/mmap.c:1365>] do_mmap_pgoff+0x385/0x430 [<mm/util.c:399>] vm_mmap_pgoff+0x8f/0xe0 [<mm/mmap.c:1416 mm/mmap.c:1374>] SyS_mmap_pgoff+0x1b0/0x210 [<arch/x86/kernel/sys_x86_64.c:72>] SyS_mmap+0x1d/0x20 [<arch/x86/kernel/entry_64.S:749>] tracesys+0xdd/0xe2 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&mm->mmap_sem); lock(&of->mutex#2); lock(&mm->mmap_sem); lock(&of->mutex#2); *** DEADLOCK *** 1 lock held by trinity-c236/10658: #0: (&mm->mmap_sem){++++++}, at: [<mm/util.c:397>] vm_mmap_pgoff+0x6e/0xe0 stack backtrace: CPU: 2 PID: 10658 Comm: trinity-c236 Tainted: G W 3.14.0-rc4-next-20140228-sasha-00011-g4077c67-dirty torvalds#26 0000000000000000 ffff88011911fa48 ffffffff8438e945 0000000000000000 0000000000000000 ffff88011911fa98 ffffffff811a0109 ffff88011911fab8 ffff88011911fab8 ffff88011911fa98 ffff880119128cc0 ffff880119128cf8 Call Trace: [<lib/dump_stack.c:52>] dump_stack+0x52/0x7f [<kernel/locking/lockdep.c:1213>] print_circular_bug+0x129/0x160 [<kernel/locking/lockdep.c:1840>] check_prev_add+0x13f/0x560 [<include/linux/spinlock.h:343 mm/slub.c:1933>] ? deactivate_slab+0x511/0x550 [<kernel/locking/lockdep.c:1945 kernel/locking/lockdep.c:2131>] validate_chain+0x6c5/0x7b0 [<kernel/locking/lockdep.c:3182>] __lock_acquire+0x4cd/0x5a0 [<mm/mmap.c:1552>] ? mmap_region+0x24a/0x5c0 [<arch/x86/include/asm/current.h:14 kernel/locking/lockdep.c:3602>] lock_acquire+0x182/0x1d0 [<fs/kernfs/file.c:487>] ? kernfs_fop_mmap+0x54/0x120 [<kernel/locking/mutex.c:470 kernel/locking/mutex.c:571>] mutex_lock_nested+0x6a/0x510 [<fs/kernfs/file.c:487>] ? kernfs_fop_mmap+0x54/0x120 [<kernel/sched/core.c:2477>] ? get_parent_ip+0x11/0x50 [<fs/kernfs/file.c:487>] ? kernfs_fop_mmap+0x54/0x120 [<fs/kernfs/file.c:487>] kernfs_fop_mmap+0x54/0x120 [<mm/mmap.c:1573>] mmap_region+0x310/0x5c0 [<mm/mmap.c:1365>] do_mmap_pgoff+0x385/0x430 [<mm/util.c:397>] ? vm_mmap_pgoff+0x6e/0xe0 [<mm/util.c:399>] vm_mmap_pgoff+0x8f/0xe0 [<kernel/rcu/update.c:97>] ? __rcu_read_unlock+0x44/0xb0 [<fs/file.c:641>] ? dup_fd+0x3c0/0x3c0 [<mm/mmap.c:1416 mm/mmap.c:1374>] SyS_mmap_pgoff+0x1b0/0x210 [<arch/x86/kernel/sys_x86_64.c:72>] SyS_mmap+0x1d/0x20 [<arch/x86/kernel/entry_64.S:749>] tracesys+0xdd/0xe2 Fix it by caching atomic_write_len in kernfs_open_file during open so that it can be determined without accessing kernfs_ops in kernfs_fop_write(). This restores the structure of kernfs_fop_write() before 4d3773c with updated @len determination logic. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Sasha Levin <sasha.levin@oracle.com> References: http://lkml.kernel.org/g/53113485.2090407@oracle.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

WARNING: braces {} are not necessary for single statement blocks torvalds#26: FILE: fs/ocfs2/locks.c:85: + if (ret) { + ocfs2_file_unlock(file); + } total: 0 errors, 1 warnings, 9 lines checked ./patches/ocfs2-flock-drop-cross-node-lock-when-failed-locally.patch has style problems, please review. If any of these errors are false positives, please report them to the maintainer, see CHECKPATCH in MAINTAINERS. Please run checkpatch prior to sending patches Cc: Joel Becker <jlbec@evilplan.org> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Wengang Wang <wen.gang.wang@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

…d problems with booting. Without that change booting leads to crash with more warnings like below: [ 0.284454] omap_hwmod: uart4: cannot clk_get main_clk uart4_fck [ 0.284484] omap_hwmod: uart4: cannot _init_clocks [ 0.284484] ------------[ cut here ]------------ [ 0.284545] WARNING: CPU: 0 PID: 1 at arch/arm/mach-omap2/omap_hwmod.c:2543 _init+0x300/0x3e4() [ 0.284545] omap_hwmod: uart4: couldn't init clocks [ 0.284576] Modules linked in: [ 0.284606] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.13.0-next-20140124-00020-gd2aefec-dirty torvalds#26 [ 0.284637] [<c00151c0>] (unwind_backtrace) from [<c0011e20>] (show_stack+0x10/0x14) [ 0.284667] [<c0011e20>] (show_stack) from [<c0568544>] (dump_stack+0x7c/0x94) [ 0.284729] [<c0568544>] (dump_stack) from [<c003ff94>] (warn_slowpath_common+0x6c/0x90) [ 0.284729] [<c003ff94>] (warn_slowpath_common) from [<c003ffe8>] (warn_slowpath_fmt+0x30/0x40) [ 0.284759] [<c003ffe8>] (warn_slowpath_fmt) from [<c07d1be8>] (_init+0x300/0x3e4) [ 0.284790] [<c07d1be8>] (_init) from [<c07d217c>] (__omap_hwmod_setup_all+0x40/0x8c) [ 0.284820] [<c07d217c>] (__omap_hwmod_setup_all) from [<c0008918>] (do_one_initcall+0xe8/0x14c) [ 0.284851] [<c0008918>] (do_one_initcall) from [<c07c5c18>] (kernel_init_freeable+0x104/0x1c8) [ 0.284881] [<c07c5c18>] (kernel_init_freeable) from [<c0563524>] (kernel_init+0x8/0x118) [ 0.284912] [<c0563524>] (kernel_init) from [<c000e368>] (ret_from_fork+0x14/0x2c) [ 0.285064] ---[ end trace 63de210ad43b627d ]--- Reference: https://lkml.org/lkml/2013/10/8/553 Signed-off-by: Marek Belisko <marek@goldelico.com>

GIT 3b55c3c0ec2eb3f163f15559f3962df717f53ccb commit 8dec067dc9c59f9fdcaf4357c22994cde3647eb8 Author: Tomasz Figa <t.figa@samsung.com> Date: Fri Mar 21 02:59:30 2014 +0900 ARM: EXYNOS: Fix compilation error in cpuidle.c The big series refactoring Exynos suspend to RAM handling missed the cpuidle driver that is disabled in exynos_defconfig, leaving it including old mach/pm_core.h header and using old s3c_cpu_resume symbol instead of new exynos_cpu_resume, resulting in compilation failures with CONFIG_ARCH_EXYNOS and CONFIG_CPU_IDLE enabled. This patch fixes that silly mistake and performs necessary modification to arhc/arm/exynos/cpuidle.c to make it compile again. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> commit 58f37b0d47e9839fc8ef90d712594ed55cfcb2c7 Author: Tomasz Figa <t.figa@samsung.com> Date: Fri Mar 21 03:22:33 2014 +0900 ARM: S5P64X0: Explicitly include linux/serial_s3c.h in mach/pm-core.h This patch fixes compilation failure due to missing explicit inclusion of linux/serial_s3c.h in mach/pm-core.h, which contains definitions required for further code in this header. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> commit b2cde2cc71f2382e4a4bfaaacd5263bd93f1e0d2 Author: Florian Fainelli <f.fainelli@gmail.com> Date: Thu Mar 20 10:53:23 2014 -0700 net: bcmgenet: manipulate netdev_queue directly Instead of always invoking netdev_get_tx_queue() in bcmgenet_xmit() and bcmgenet_tx_reclaim(), just get the corresponding netdev_queue pointer once and for all and manipulate it throughout bcmgenet_xmit() and bcmgenet_tx_reclaim(). Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> commit d5c76f628d399f06785b0ee910c431770a01b807 Author: Florian Fainelli <f.fainelli@gmail.com> Date: Thu Mar 20 10:53:22 2014 -0700 net: bcmgenet: remove bogus tx queue checks netdev_pick_tx already takes care of making sure that a given skb->queue_mapping value will remain within the number of advertised hardware queue number, there is no need to re-do this again in the driver. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> commit d03825fba459d0d58e4fe162439babfc5f5eabc4 Author: Florian Fainelli <f.fainelli@gmail.com> Date: Thu Mar 20 10:53:21 2014 -0700 net: bcmgenet: add skb_tx_timestamp call The BCMGENET driver was not TX timestamping the SKBs it queued for transmission, do this in bcmgenet_xmit() right before kicking the Transmit DMA engine. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> commit 9460c936794fbcf82623e263926b17334ca5887a Author: Florian Fainelli <f.fainelli@gmail.com> Date: Thu Mar 20 10:53:20 2014 -0700 net: bcmgenet: remove unused spinlock member The spinlock cookie in bcmgenet_priv is never used, get rid of it. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> commit f738a13d8365b0f824f3f20450b413f55374f175 Author: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Date: Thu Mar 20 15:00:35 2014 +0100 sh_eth: Remove goto statements that jump straight to a return "goto" is well accepted for error paths in the kernel but should not be used unnecessarily. Return the correct value directly instead of using a goto when possible. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: David S. Miller <davem@davemloft.net> commit daacf03f0bbfefee3df107c3f7659d22e22538a7 Author: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Date: Thu Mar 20 15:00:34 2014 +0100 sh_eth: Register MDIO bus before registering the network device Network API functions that rely on the MDIO bus can be called as soon as the driver calls register_netdev(). Register the MDIO bus before the network device to avoid race conditions. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: David S. Miller <davem@davemloft.net> commit bd920ff553ba17f19372501a14e432d9d92b102b Author: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Date: Thu Mar 20 15:00:33 2014 +0100 sh_eth: Simplify MDIO bus initialization and release The network device passed to the sh_mdio_init and sh_mdio_release functions is only used to access the sh_eth_private instance. Pass it directly to those functions. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: David S. Miller <davem@davemloft.net> commit a5bd60608936fbb84471a80592401ce29a68de71 Author: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Date: Thu Mar 20 15:00:32 2014 +0100 sh_eth: Use the platform device as the MDIO bus parent The MDIO bus parent is set to the network device. Beside not reflecting the hardware topology, this prevents registering the MDIO bus before initializing the network device. Fix it by setting the MDIO bus parent to the platform device. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: David S. Miller <davem@davemloft.net> commit aa8d422510969b705656e49fc0166d862aca9246 Author: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Date: Thu Mar 20 15:00:31 2014 +0100 sh_eth: Use the platform device for memory allocation Memory allocated for the MDIO bus with the devm_kzalloc() API is associated with the network device. While this will cause memory to be freed at the right time, it doesn't allow allocating memory before the network device is initialized. Replace the network device with the parent platform device for memory allocation to remove that dependency. This also improves consistency with the other devm_* calls in the driver that all use the platform device. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: David S. Miller <davem@davemloft.net> commit 54af36e7136b5e111734ca5b06c6b4390d663cac Author: Alexander Aring <alex.aring@gmail.com> Date: Thu Mar 20 14:57:03 2014 +0100 ieee802154: dgram: cleanup set of broadcast panid This patch is only a cleanup to use the right define for a panid field. The broadcast address and panid broadcast is still the same value. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Cc: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de> Signed-off-by: David S. Miller <davem@davemloft.net> commit 06324f2f7c21e3ba3529546063a3ebf7da806ed0 Author: Alexander Aring <alex.aring@gmail.com> Date: Thu Mar 20 14:57:02 2014 +0100 af_ieee802154: fix check on broadcast address This patch fixes an issue which was introduced by commit b70ab2e87f17176d18f67ef331064441a032b5f3 ("ieee802154: enforce consistent endianness in the 802.15.4 stack"). The correct behaviour should be a check on the broadcast address field which is 0xffff. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Reported-by: Jan Luebbe <jlu@pengutronix.de> Cc: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de> Signed-off-by: David S. Miller <davem@davemloft.net> commit 3c6f5592203e8126b70717f040c6c59f953068b3 Author: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Date: Wed Mar 19 16:15:24 2014 -0600 of_mdio: Allow the DT to specify the phy ID and avoid autoprobing This makes the generic of_mdiobus_register parse the DT compatible string for the pattern ethernet-phy-idAAAA.BBBB. If present it should be a value that matches the phy-id register normally readable through MDIO. When the ID is given the phy autoprobing is defeated and the phy is created directly. This is necessary to support phy's that cannot be autoprobed when of_mdiobus_register is called. Specifically, my case has the phy in reset at of_mdiobus_register, the reset is only released once the ethernet driver starts, before it attaches to the phy. Tested on ARM Kirkwood with phy id 0x01410e90 (Marvell 88E1318) Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> commit f00e756ed12d3204583764c93e41b89e1ae7ee44 Author: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Date: Wed Mar 19 16:15:23 2014 -0600 dt: Document a compatible entry for MDIO ethernet Phys This describes a compatible entry of the form: ethernet-phy-idAAAA,BBBB Which is modelled after the PCI structured compatible entry (pciVVVV,DDDD.SSSS.ssss.RR) If present the OF core will be able to use this information to directly create the correct phy without auto probing the bus. Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Acked-by: Rob Herring <robh@kernel.org> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> commit 259fef033ffe4e70bf7f358c53400a09f1b5384e Author: Ben Chan <benchan@chromium.org> Date: Wed Mar 19 14:00:06 2014 -0700 net: cdc_ncm: respect operator preferred MTU reported by MBIM According to "Universal Serial Bus Communications Class Subclass Specification for Mobile Broadband Interface Model, Revision 1.0, Errata-1" published by USB-IF, the wMTU field of the MBIM extended functional descriptor indicates the operator preferred MTU for IP data streams. This patch modifies cdc_ncm_setup to ensure that the MTU value set on the usbnet device does not exceed the operator preferred MTU indicated by wMTU if the MBIM device exposes a MBIM extended functional descriptor. Signed-off-by: Ben Chan <benchan@chromium.org> Signed-off-by: David S. Miller <davem@davemloft.net> commit bfe9b3f8c5229e5de4fd18e941866bc410d16334 Author: Ben Chan <benchan@chromium.org> Date: Wed Mar 19 14:00:05 2014 -0700 USB: cdc: add MBIM extended functional descriptor structure This patch adds the MBIM extended functional descriptor structure defined in "Universal Serial Bus Communications Class Subclass Specification for Mobile Broadband Interface Model, Revision 1.0, Errata-1" published by USB-IF. Signed-off-by: Ben Chan <benchan@chromium.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: David S. Miller <davem@davemloft.net> commit f518338b16038beeb73e155e60d0f70beb9379f4 Author: Nicolas Dichtel <nicolas.dichtel@6wind.com> Date: Wed Mar 19 17:47:51 2014 +0100 ip6mr: fix mfc notification flags Commit 812e44dd1829 ("ip6mr: advertise new mfc entries via rtnl") reuses the function ip6mr_fill_mroute() to notify mfc events. But this function was used only for dump and thus was always setting the flag NLM_F_MULTI, which is wrong in case of a single notification. Libraries like libnl will wait forever for NLMSG_DONE. CC: Thomas Graf <tgraf@suug.ch> Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Acked-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net> commit 65886f439ab0fdc2dff20d1fa87afb98c6717472 Author: Nicolas Dichtel <nicolas.dichtel@6wind.com> Date: Wed Mar 19 17:47:50 2014 +0100 ipmr: fix mfc notification flags Commit 8cd3ac9f9b7b ("ipmr: advertise new mfc entries via rtnl") reuses the function ipmr_fill_mroute() to notify mfc events. But this function was used only for dump and thus was always setting the flag NLM_F_MULTI, which is wrong in case of a single notification. Libraries like libnl will wait forever for NLMSG_DONE. CC: Thomas Graf <tgraf@suug.ch> Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Acked-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net> commit 1c104a6bebf3c16b6248408b84f91d09ac8a26b6 Author: Nicolas Dichtel <nicolas.dichtel@6wind.com> Date: Wed Mar 19 17:47:49 2014 +0100 rtnetlink: fix fdb notification flags Commit 3ff661c38c84 ("net: rtnetlink notify events for FDB NTF_SELF adds and deletes") reuses the function nlmsg_populate_fdb_fill() to notify fdb events. But this function was used only for dump and thus was always setting the flag NLM_F_MULTI, which is wrong in case of a single notification. Libraries like libnl will wait forever for NLMSG_DONE. CC: Thomas Graf <tgraf@suug.ch> Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Acked-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net> commit 632623153196bf183a69686ed9c07eee98ff1bf8 Author: Eric Dumazet <edumazet@google.com> Date: Wed Mar 19 21:02:21 2014 -0700 tcp: syncookies: do not use getnstimeofday() While it is true that getnstimeofday() uses about 40 cycles if TSC is available, it can use 1600 cycles if hpet is the clocksource. Switch to get_jiffies_64(), as this is more than enough, and go back to 60 seconds periods. Fixes: 8c27bd75f04f ("tcp: syncookies: reduce cookie lifetime to 128 seconds") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Florian Westphal <fw@strlen.de> Acked-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net> commit dd41cc3bb90efd455df514899a5d3cf245182eb1 Author: Matan Barak <matanb@mellanox.com> Date: Wed Mar 19 18:11:53 2014 +0200 net/mlx4: Adapt num_vfs/probed_vf params for single port VF A new syntax is added for the module parameters num_vfs and probe_vf. num_vfs=p1,p2,p1+p2 probe_bf=p1,p2,p1+p2 Where p1(2) is the number of VFs on / probed VFs for physical port1(2) and p1+p2 is the number of dual port VFs. Single port VFs are currently supported only when the link type for both ports of the device is Ethernet. Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net> commit 449fc48866f7d84b0d9a19201de18a4dd4d3488c Author: Matan Barak <matanb@mellanox.com> Date: Wed Mar 19 18:11:52 2014 +0200 net/mlx4: Adapt code for N-Port VF Adds support for N-Port VFs, this includes: 1. Adding support in the wrapped FW command In wrapped commands, we need to verify and convert the slave's port into the real physical port. Furthermore, when sending the response back to the slave, a reverse conversion should be made. 2. Adjusting sqpn for QP1 para-virtualization The slave assumes that sqpn is used for QP1 communication. If the slave is assigned to a port != (first port), we need to adjust the sqpn that will direct its QP1 packets into the correct endpoint. 3. Adjusting gid[5] to modify the port for raw ethernet In B0 steering, gid[5] contains the port. It needs to be adjusted into the physical port. 4. Adjusting number of ports in the query / ports caps in the FW commands When a slave queries the hardware, it needs to view only the physical ports it's assigned to. 5. Adjusting the sched_qp according to the port number The QP port is encoded in the sched_qp, thus in modify_qp we need to encode the correct port in sched_qp. Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net> commit f74462acf8f390528c8b7937f227c6c90d017f3b Author: Matan Barak <matanb@mellanox.com> Date: Wed Mar 19 18:11:51 2014 +0200 net/mlx4: Add utils for N-Port VFs This patch adds the following utils: 1. Convert slave_id -> VF 2. Get the active ports by slave_id 3. Convert slave's port to real port 4. Get the slave's port from real port 5. Get all slaves that uses the i'th real port 6. Get all slaves that uses the i'th real port exclusively Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net> commit 1ab95d37bcc3ff2d69e3871e4f056bab7aed0b85 Author: Matan Barak <matanb@mellanox.com> Date: Wed Mar 19 18:11:50 2014 +0200 net/mlx4: Add data structures to support N-Ports per VF Adds the required data structures to support VFs with N (1 or 2) ports instead of always using the number of physical ports. Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net> commit 82373701be26b893eaf7372db0af84235a51998a Author: Matan Barak <matanb@mellanox.com> Date: Wed Mar 19 18:11:49 2014 +0200 IB/mlx4_ib: Adapt code to use caps.num_ports instead of a constant Some code in the mlx4 IB driver stack assumed MLX4_MAX_PORTS ports. Instead, we should only loop until the number of actual ports in i the device, which is stored in dev->caps.num_ports. Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net> commit 8798998c2cdbc0df3c64e8845c1502ed93ef1ebd Author: Fabio Estevam <fabio.estevam@freescale.com> Date: Wed Mar 19 11:22:06 2014 -0300 smsc911x: Change clock warning message to debug level Since passing the clock is not mandatory, change the warning message to debug, so that we avoid getting the following clock failure message on every boot: smsc911x: Driver version 2008-10-21 smsc911x smsc911x (unregistered net_device): couldn't get clock -2 libphy: smsc911x-mdio: probed Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net> commit e35bad5d876dc7b0bfd794a3ba328a442bd970e0 Author: Daniel Baluta <dbaluta@ixiacom.com> Date: Wed Mar 19 15:58:25 2014 +0200 net: remove empty lines from tcp_syn_flood_action Signed-off-by: Daniel Baluta <dbaluta@ixiacom.com> Signed-off-by: David S. Miller <davem@davemloft.net> commit 1aa9c483d1be13831bc4e516ce4848d32ac3e944 Author: Sachin Kamat <sachin.kamat@linaro.org> Date: Fri Mar 21 04:49:03 2014 +0900 ARM: EXYNOS: Remove hardware.h file This is a dummy placeholder file. Delete it. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> commit 2bb1ad17d66da3549eb4d23e264786a98f9ab17b Author: Sachin Kamat <sachin.kamat@linaro.org> Date: Fri Mar 21 04:48:59 2014 +0900 ARM: SAMSUNG: Remove hardware.h inclusion The contents of this header file are not referenced anywhere in the included .c files except in devs.c. Remove its inclusion. For devs.c, explicitly include sizes.h header for SZ_* macros. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> commit 144bf7b0a96e28266c6b2f47a6e04c7a4e4b3aa4 Author: Sachin Kamat <sachin.kamat@linaro.org> Date: Fri Mar 21 04:48:07 2014 +0900 ARM: S3C24XX: Remove invalid code from hardware.h Remove the code that is not referenced anywhere. While at it also remove incorrect file path. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> commit 676141e48af7463717896352e69c10f945ac22dd Author: Jens Axboe <axboe@fb.com> Date: Thu Mar 20 13:29:18 2014 -0600 blk-mq: don't dump CPU -> hw queue map on driver load Now that we are out of initial debug/bringup mode, remove the verbose dump of the mapping table. Provide the mapping table in sysfs, under the hardware queue directory, in the cpu_list file. Signed-off-by: Jens Axboe <axboe@fb.com> commit 602408e3de70d132c115670a366f4c5ae657080c Author: Tushar Behera <tushar.behera@linaro.org> Date: Fri Mar 21 04:31:30 2014 +0900 dt-bindings: clock: Move exynos-audss-clk.h to dt-bindings/clock Most of the clock related dt-binding header files are located in dt-bindings/clock folder. It would be good to keep all the similar header files at a single location. Signed-off-by: Tushar Behera <tushar.behera@linaro.org> Reviewed-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> commit 55ace6b285d7350d5b562ba065656c8242629a32 Author: Tushar Behera <tushar.behera@linaro.org> Date: Fri Mar 21 04:26:40 2014 +0900 ARM: dts: Keep some essential LDOs enabled for arndale-octa board LDO3 and LDO23 need to be enabled in order for soft-reset to work. Additionally LDO9 needs to be enabled for USB operations. Signed-off-by: Tushar Behera <tushar.behera@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> commit 3da355c03a44bc45f3688bb68b51eefa738d1857 Author: Tushar Behera <tushar.behera@linaro.org> Date: Fri Mar 21 04:26:40 2014 +0900 ARM: dts: Disable MDMA1 node for arndale-octa board MDMA1 can support both secure and non-secure AXI transactions. When this is enabled in the kernel for boards that run in secure mode, we get imprecise external aborts causing the kernel to oops. Unhandled fault: imprecise external abort (0x1406) at 0x00000000 Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000007 Suggested-by: Javi Merino <javi.merino@arm.com> Signed-off-by: Tushar Behera <tushar.behera@linaro.org> Tested-by: Javi Merino <javi.merino@arm.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> commit e1a9d00c689a5da2d1baf273891507c5fb063f4c Author: Mark Brown <broonie@linaro.org> Date: Fri Mar 21 02:57:18 2014 +0900 ARM: S3C64XX: Fix build for implicit serial_s3c.h inclusion Some very recent change appears to have removed an implicit inclusion of serial_s3c.h causing build failures due to references to UART registers in the serial port restore code in next-20140318. Include it explicitly to fix the build. Signed-off-by: Mark Brown <broonie@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> commit cf559ab94e058df65c841b4afc8d5346fdda19b3 Author: Mark Brown <broonie@linaro.org> Date: Fri Mar 21 02:55:11 2014 +0900 serial: s3c: Fix build of header without serial_core.h preinclusion serial_s3c.h uses upf_t which is defined in serial_core.h but does not include that itself meaning that users which include serial_s3c.h by itself don't build. Signed-off-by: Mark Brown <broonie@linaro.org> [t.figa: Moved inclusion under #ifndef __ASSEMBLY__ to fix mach-exynos] Signed-off-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> commit dd8ac696b20c1be5ca4728045df10e882e01e91d Author: Tomasz Figa <t.figa@samsung.com> Date: Tue Mar 18 07:28:30 2014 +0900 ARM: EXYNOS: Allow wake-up using GIC interrupts This patch restores the ability to receive wake-up events from internal GIC interrupts, e.g. RTC tick or alarm interrupts. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> commit d710aa31874e2ff6e656dbd4807f4bd8d659eb93 Author: Tomasz Figa <t.figa@samsung.com> Date: Tue Mar 18 07:28:27 2014 +0900 ARM: EXYNOS: Stop using legacy Samsung PM code Since Exynos SoCs does not follow most of the semantics of older SoCs when configuring the system to enter sleep, there is no reason to rely on the legacy Samsung PM core anymore. This patch adds local Exynos suspend ops and removes all the code left unnecessary. As a side effect, suspend support on Exynos becomes multiplatform-friendly. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> commit 559ba237999d723ccba5b4a75cf6b280bac1ab21 Author: Tomasz Figa <t.figa@samsung.com> Date: Tue Mar 18 07:28:22 2014 +0900 ARM: EXYNOS: Remove PM initcalls and useless indirection This patch simplifies Exynos PM initialization and makes it multiplatform friendly by replacing initcalls used originally to invoke all the initialization code with explicit function calls. In addition, an useless subsys_interface is removed, as all its .add_dev callback did was setting two function pointers. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> commit dbc5ca163dc46153a8e5249da627af571ae47c10 Author: Tomasz Figa <t.figa@samsung.com> Date: Tue Mar 18 07:28:10 2014 +0900 ARM: EXYNOS: Fix abuse of CONFIG_PM CONFIG_PM means that at least one of CONFIG_PM_SLEEP and CONFIG_PM_RUNTIME is enabled, while multiple entries in mach-exynos/Kconfig abused it to enable sleep- and runtime-specific functionality. This patch fixes this abuse by replacing dependencies on CONFIG_PM with appropriate dependencies on either CONFIG_PM_SLEEP or CONFIG_PM_RUNTIME, whichever is appropriate. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> commit f682426630c620a2b8ae488a4f0d85ec6c272d66 Author: Tomasz Figa <t.figa@samsung.com> Date: Tue Mar 18 07:28:10 2014 +0900 ARM: SAMSUNG: Move s3c_pm_check_* prototypes to plat/pm-common.h To allow using Samsung PM memory check helpers on platforms that do not use the legacy Samsung PM core, this patch moves prototypes of relevant functions to plat/pm-common.h header. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> commit b27899178c53226a5ff780a17657c84eb5e32338 Author: Tomasz Figa <t.figa@samsung.com> Date: Tue Mar 18 07:28:10 2014 +0900 ARM: SAMSUNG: Move common save/restore helpers to separate file To separate legacy PM code from generic helpers, this patch moves the generic register save/restore helpers to a new file called pm-common.c that is compiled always when CONFIG_PM_SLEEP is enabled, to allow platforms that do not want to use the legacy PM code use the generic helpers. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> commit 72551f6cf13e2f3a1d273b7007b5d7d7fd69c554 Author: Tomasz Figa <t.figa@samsung.com> Date: Tue Mar 18 07:28:09 2014 +0900 ARM: SAMSUNG: Move Samsung PM debug code into separate file Not all Samsung SoC platforms are going to use the legacy Samsung PM code enabled by CONFIG_SAMSUNG_PM_DEBUG. To allow using Samsung PM debug helpers on such platforms, related code is moved to separate file and a plat/pm-common.h header is added to separate legacy and generic code. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> commit d38688a69fd88269eae3c7c66ec34fb02fb04fd1 Author: Tomasz Figa <t.figa@samsung.com> Date: Tue Mar 18 07:28:09 2014 +0900 ARM: SAMSUNG: Consolidate PM debug functions This patch removes one-line functions that was used just to pass constant arguments to lower level functions. After previous patches the need for those constants has been eliminated, so the main functions can be called directly. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> commit 99b2fc2b8b40256538332769f11f2fe6ee942f6c Author: Tomasz Figa <t.figa@samsung.com> Date: Tue Mar 18 07:28:09 2014 +0900 ARM: SAMSUNG: Use debug_ll_addr() to get UART base address This patch modifies Samsung PM debug helpers to use a multiplatform friendly way of getting base address of debug UART port, so instead of using a per-mach static macro, a generic debug_ll_addr() helper is used. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> commit de7fe0807c08553b88028d039861a4b8ad04fc62 Author: Tomasz Figa <t.figa@samsung.com> Date: Tue Mar 18 07:28:09 2014 +0900 ARM: SAMSUNG: Save UART DIVSLOT register based on SoC type The only SoC that does not have DIVSLOT register is S3C2410, so instead of exporting a variable for platforms to set if DIVSLOT register should be preserved, it's enough to simply check whether we are running on a S3C2410 instead. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> commit 04241069617d4f0bfd9f4a3aeefae13e1e5b55e1 Author: Tomasz Figa <t.figa@samsung.com> Date: Tue Mar 18 07:28:09 2014 +0900 ARM: SAMSUNG: Add soc_is_s3c2410() helper Due to the S3C2410 SoC being quite different from other S3C24xx SoCs in some aspects, such as availability of DIVSLOT register in its UART blocks, there is a need sometimes to check whether we are running on this SoC, not just the S3C24xx series. This patch adds soc_is_s3c2410() helper function for this purpose. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> commit 61557b8bac9c80a5c14d237d420c246703e5c2e2 Author: Tomasz Figa <t.figa@samsung.com> Date: Tue Mar 18 07:28:09 2014 +0900 ARM: EXYNOS: Do not resume l2x0 if not enabled before suspend Trying to resume l2x0 if it was not enabled before suspend leads to system crash. This patch prevents this by checking if l2x0_regs_phys is a valid pointer to l2x0 context data saved on initialization. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> commit 56981fbc1b044cb140f70279deb736b6ae8664fb Author: Mike Snitzer <snitzer@redhat.com> Date: Thu Mar 20 10:11:15 2014 -0400 dm cache: prevent corruption caused by discard_block_size > cache_block_size If the discard block size is larger than the cache block size we will not properly quiesce IO to a region that is about to be discarded. This results in a race between a cache migration where no copy is needed, and a write to an adjacent cache block that's within the same large discard block. Workaround this by limiting the discard_block_size to cache_block_size. Also limit the max_discard_sectors to cache_block_size. A more comprehensive fix that introduces range locking support in the bio_prison and proper quiescing of a discard range that spans multiple cache blocks is already in development. Reported-by: Morgan Mears <Morgan.Mears@netapp.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Acked-by: Joe Thornber <ejt@redhat.com> Acked-by: Heinz Mauelshagen <heinzm@redhat.com> Cc: stable@vger.kernel.org commit 88050049e7111f074e8887ba5a4cefc9f8fa8d41 Author: stephen hemminger <shemming@brocade.com> Date: Wed Mar 19 21:54:20 2014 -0700 netlink: fix setsockopt in mmap examples in documentation The documentation for how to use netlink mmap interface is incorrect. The calls to setsockopt() require an additional argument. Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: David S. Miller <davem@davemloft.net> commit f9b8c4c8baded129535d82d74df8e87a7a369f54 Author: Ben Pfaff <blp@nicira.com> Date: Thu Mar 20 10:45:21 2014 -0700 openvswitch: Correctly report flow used times for first 5 minutes after boot. The kernel starts out its "jiffies" timer as 5 minutes below zero, as shown in include/linux/jiffies.h: /* * Have the 32 bit jiffies value wrap 5 minutes after boot * so jiffies wrap bugs show up earlier. */ #define INITIAL_JIFFIES ((unsigned long)(unsigned int) (-300*HZ)) The loop in ovs_flow_stats_get() starts out with 'used' set to 0, then takes any "later" time. This means that for the first five minutes after boot, flows will always be reported as never used, since 0 is greater than any time already seen. Signed-off-by: Ben Pfaff <blp@nicira.com> Acked-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com> commit 494314c415e2d3b308f57c9245ae6525166c70b8 Author: Trond Myklebust <trond.myklebust@primarydata.com> Date: Thu Mar 20 12:59:09 2014 -0400 SUNRPC: rpc_restart_call/rpc_restart_call_prepare should clear task->tk_status When restarting an rpc call, we should not be carrying over data from the previous call. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> commit 6bd144160a5554e4af052c153a094c4851a4c6aa Author: Trond Myklebust <trond.myklebust@primarydata.com> Date: Thu Mar 20 12:53:54 2014 -0400 SUNRPC: Don't let rpc_delay() clobber non-timeout errors Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> commit d614f6d0bed7fa5a795708a6dc334370e1ca7951 Author: Yan Burman <yanb@mellanox.com> Date: Tue Mar 11 14:41:47 2014 +0200 IB/mad: Check and handle potential DMA mapping errors Running with DMA_API_DEBUG enabled and not checking for DMA mapping errors triggers a kernel stack trace with "DMA-API: device driver failed to check map error" message. Add these checks to the MAD module, both to be be more robust and also eliminate these false-positive stack traces. Signed-off-by: Yan Burman <yanb@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com> commit 76cf9cbb68f3234f54c0a12bde6372911157c650 Author: Selvin Xavier <selvin.xavier@emulex.com> Date: Tue Mar 18 14:54:56 2014 +0530 RDMA/ocrdma: Unregister inet notifier when unloading ocrdma Unregister the inet notifier during ocrdma unload to avoid a panic after driver unload. Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com> Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com> commit 186f8ba062f796221d51077342f3ba5202838e9f Author: Dan Carpenter <dan.carpenter@oracle.com> Date: Thu Jan 30 15:12:31 2014 +0300 IB/qib: Cleanup qib_register_observer() Returning directly is easier to read than do-nothing gotos. Remove the duplicative check on "olp" and pull the code in one indent level. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com> commit 49c0e2414b20d868cf006addf14152570aef2605 Author: CQ Tang <cq.tang@intel.com> Date: Thu Jan 30 17:36:00 2014 -0500 IB/qib: Change SDMA progression mode depending on single- or multi-rail Improve performance by changing the behavour of the driver when all SDMA descriptors are in use, and the processes adding new descriptors are single- or multi-rail. For single-rail processes, the driver will block the call and finish posting all SDMA descriptors onto the hardware queue before returning back to PSM. Repeated kernel calls are slower than blocking. For multi-rail processes, the driver will return to PSM as quick as possible so PSM can feed packets to other rail. If all hardware queues are full, PSM will buffer the remaining SDMA descriptors until notified by interrupt that space is available. This patch builds a red-black tree to track the number rails opened by a particular PID. If the number is more than one, it is a multi-rail PSM process, otherwise, it is a single-rail process. Reviewed-by: Dean Luick <dean.luick@intel.com> Reviewed-by: John A Gregor <john.a.gregor@intel.com> Reviewed-by: Mitko Haralanov <mitko.haralanov@intel.com> Signed-off-by: CQ Tang <cq.tang@intel.com> Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com> commit 8307281a5bceaaaa1566897dc0b57cdb62413ae8 Author: Roland Dreier <roland@purestorage.com> Date: Mon Mar 17 23:14:17 2014 -0700 RDMA/ocrdma: Fix warnings about pointer <-> integer casts We should cast pointers to and from unsigned long to turn them into ints. Signed-off-by: Roland Dreier <roland@purestorage.com> commit 0d3a1e7e317b06d87b92011c62a5061f299820b9 Author: Devesh Sharma <Devesh.Sharma@Emulex.Com> Date: Tue Feb 4 11:57:10 2014 +0530 RDMA/ocrdma: Code clean-up Clean up code. Also modifying GSI QP to error during ocrdma_close is fixed. Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com> Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com> commit 9a31758308df672713ea0db9a9eff7c3cb348bc2 Author: Selvin Xavier <selvin.xavier@emulex.com> Date: Tue Feb 4 11:57:09 2014 +0530 RDMA/ocrdma: Display FW version Adding a sysfs file for getting the FW version. Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com> Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com> commit babe6b9ce0bdf964624435382a67c09f668bcab0 Author: Selvin Xavier <selvin.xavier@emulex.com> Date: Tue Feb 4 11:57:07 2014 +0530 RDMA/ocrdma: Query controller information Issue mailbox commands to query ocrdma controller information and phy information and print them while adding ocrdma device. Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com> Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com> commit 8bdb31b4d1931a32264fbe4651e607eb72941ff0 Author: Sachin Kamat <sachin.kamat@linaro.org> Date: Fri Mar 21 02:17:22 2014 +0900 ARM: dts: Update Exynos DT files with generic compatible strings Add generic compatible strings to the respective board DT files. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> commit 4868123ceb6ef0d4fa04e3211a0f4cd948f418f9 Author: Sachin Kamat <sachin.kamat@linaro.org> Date: Fri Mar 21 02:14:59 2014 +0900 ARM: EXYNOS: Add generic compatible strings Add generic compatible strings for Exynos4 and 5 platforms so that future SoCs can use them if there is nothing extra/specific to be differentiated. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> commit cbf08b9ebdfc75bb13ef80ad3b8e3bea46d8c43a Author: Sachin Kamat <sachin.kamat@linaro.org> Date: Fri Mar 21 02:14:30 2014 +0900 ARM: EXYNOS: Consolidate exynos4 and exynos5 machine files Since there is very little difference between these two files, they can be easily combined into one with necessary SoC checks. While at it also merge the common.c file into this as it does not have any other users. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> commit 6eb84669cf7e94214593f162d4c1cf20424dd906 Author: Sachin Kamat <sachin.kamat@linaro.org> Date: Fri Mar 21 02:09:39 2014 +0900 ARM: EXYNOS: Consolidate CPU init code cpu_table was used to distinguish between different Exynos4 and 5 SoCs and based on the type do the initialization and io mapping. exynos_init is dummy and no longer needed as we do a DT based booting. By having a common io mapping function we can get rid of the whole table and avoid populating it for every SoC. Tested on Exynos4210, 5250 and 5420 based boards. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Tested-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> commit 7bd03c0ebe54db94f20cd7577b875d9d27e539a9 Author: Selvin Xavier <selvin.xavier@emulex.com> Date: Tue Feb 4 11:57:06 2014 +0530 RDMA/ocrdma: Support non-embedded mailbox commands Added a routine to issue non-embedded mailbox commands for handling large mailbox request/response data. Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com> Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com> commit a1b8aff87d5f27022e6c14c43bf43226e75d2745 Author: Selvin Xavier <selvin.xavier@emulex.com> Date: Tue Feb 4 11:57:05 2014 +0530 RDMA/ocrdma: Handle CQ overrun error Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com> Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com> commit 23631e15a7f3c01a1ebb34f2c176f658c27eb949 Author: Selvin Xavier <selvin.xavier@emulex.com> Date: Tue Feb 4 11:57:04 2014 +0530 RDMA/ocrdma: Display proper value for max_mw Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com> Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com> commit c0e19755d56142b026b07b8020273301c8ed42bb Author: Selvin Xavier <selvin.xavier@emulex.com> Date: Tue Feb 4 11:57:03 2014 +0530 RDMA/ocrdma: Use non-zero tag in SRQ posting As part of SRQ receive buffers posting we populate a non-zero tag which will be returned in SRQ receive completions. Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com> Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com> commit def4eb8e5eacdfbc4788a6cb1bc0a3f118b5b349 Author: Selvin Xavier <selvin.xavier@emulex.com> Date: Tue Feb 4 11:57:02 2014 +0530 RDMA/ocrdma: Memory leak fix in ocrdma_dereg_mr() Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com> Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com> commit 0f4d45e0845e63e54aeaf5a7444b8ef4b77e4895 Author: devesh.sharma@emulex.com <devesh.sharma@emulex.com> Date: Tue Feb 4 11:57:01 2014 +0530 RDMA/ocrdma: Increment abi version count Increment the ABI version count for driver/library interface. Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com> Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com> commit 5b5eb9421408080b46ce14210ca717714859dee4 Author: devesh.sharma@emulex.com <devesh.sharma@emulex.com> Date: Tue Feb 4 11:57:00 2014 +0530 RDMA/ocrdma: Update version string Update the driver vrsion string and node description string Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com> Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com> commit 91b3140a692e87733367521efdd24f9a3532889a Author: devesh.sharma@emulex.com <devesh.sharma@emulex.com> Date: Tue Feb 4 11:56:59 2014 +0530 be2net: Add abi version between be2net and ocrdma This patch adds abi versioning between be2net and ocrdma driver modules to catch functional incompatibilities in the two drivers. Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com> Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com> commit 973ce6ce272d2c79f7eb1094ec26c25d1d8b4b32 Author: devesh.sharma@emulex.com <devesh.sharma@emulex.com> Date: Tue Feb 4 11:56:58 2014 +0530 RDMA/ocrdma: ABI versioning between ocrdma and be2net While loading RoCE driver be2net driver should check for ABI version to catch functional incompatibilities. Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com> Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com> commit db84035babf25f81be2a548f9332553b3a62865f Author: devesh.sharma@emulex.com <devesh.sharma@emulex.com> Date: Tue Feb 4 11:56:57 2014 +0530 RDMA/ocrdma: Allow DPP QP creation Allow creating DPP QP even if inline-data is not requested. This is an optimization to lower latency. Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com> Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com> commit d64c9414a4cc7c768d117ae035bf45cce760aeb5 Author: devesh.sharma@emulex.com <devesh.sharma@emulex.com> Date: Tue Feb 4 11:56:56 2014 +0530 RDMA/ocrdma: Read ASIC_ID register to select asic_gen ocrdma driver selects execution path based on sli_family and asic generation number. This introduces code to read the asic gen number from pci register instead of obtaining it from the Emulex NIC driver. Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com> Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com> commit da7d0e7699e6c5e3b076ba68680afe679e7379f0 Author: Devesh Sharma <Devesh.Sharma@Emulex.Com> Date: Tue Feb 4 11:56:55 2014 +0530 RDMA/ocrdma: SQ and RQ doorbell offset clean up Introducing new macros to define SQ and RQ doorbell offset. Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com> Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com> commit 1dbf741320af98620593c9a1d7481dd8b37f53fe Author: devesh.sharma@emulex.com <devesh.sharma@emulex.com> Date: Tue Feb 4 11:56:54 2014 +0530 RDMA/ocrdma: EQ full catastrophe avoidance Stale entries in the CQ being destroyed causes hardware to generate EQEs indefinitely for a given CQ. Thus causing uncontrolled execution of irq_handler. This patch fixes this using following sementics: * irq_handler will ring EQ doorbell atleast once and implement budgeting scheme. * cq_destroy will count number of valid entires during destroy and ring cq-db so that hardware does not generate uncontrolled EQE. * cq_destroy will synchronize with last running irq_handler instance. * arm_cq will always defer arming CQ till poll_cq, except for the first arm_cq call. * poll_cq will always ring cq-db with arm=SET if arm_cq was called prior to enter poll_cq. * poll_cq will always ring cq-db with arm=UNSET if arm_cq was not called prior to enter poll_cq. Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com> Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com> commit eda6d1d1b7932f90d55583f8f3835dd7d6b32543 Author: Steve Wise <swise@opengridcomputing.com> Date: Wed Mar 19 17:44:45 2014 +0530 RDMA/cxgb4: Save the correct map length for fast_reg_page_lists We cannot save the mapped length using the rdma max_page_list_len field of the ib_fast_reg_page_list struct because the core code uses it. This results in an incorrect unmap of the page list in c4iw_free_fastreg_pbl(). I found this with dma mapping debugging enabled in the kernel. The fix is to save the length in the c4iw_fr_page_list struct. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <roland@purestorage.com> commit df2d5130ece9118591c2f3fbf0ee4a79183b4ccc Author: Steve Wise <swise@opengridcomputing.com> Date: Wed Mar 19 17:44:44 2014 +0530 RDMA/cxgb4: Default peer2peer mode to 1 Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <roland@purestorage.com> commit ba32de9d8d8173a1d6dd1ed608c519d5d0a623bb Author: Steve Wise <swise@opengridcomputing.com> Date: Wed Mar 19 17:44:43 2014 +0530 RDMA/cxgb4: Mind the sq_sig_all/sq_sig_type QP attributes Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <roland@purestorage.com> commit 8a9c399eeee8c2d99e22b975f6023001a1fde88f Author: Steve Wise <swise@opengridcomputing.com> Date: Wed Mar 19 17:44:42 2014 +0530 RDMA/cxgb4: Fix incorrect BUG_ON conditions Based on original work from Jay Hernandez <jay@chelsio.com> Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <roland@purestorage.com> commit 58553078c1feb40e0a02d7c72ae41dd6b923f231 Author: Sachin Kamat <sachin.kamat@linaro.org> Date: Fri Mar 21 02:00:21 2014 +0900 ARM: SAMSUNG: Introduce generic Exynos4 and 5 helpers Add helpers to check for Exynos4 and 5 family of SoCs. This will eliminate comparing long list of SoCs and make code simpler. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> commit 7ed30015007c32c006783526dc54a2a88bd5e13b Author: Sachin Kamat <sachin.kamat@linaro.org> Date: Fri Mar 21 01:52:56 2014 +0900 ARM: EXYNOS: Add support to reserve memory for MFC-v7 Reserve memory for MFC-v7 IP. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> commit 8b3e8bbd132279be544a6f4dc22c22d244c98c23 Author: Tushar Behera <tushar.behera@linaro.org> Date: Fri Mar 21 01:49:24 2014 +0900 ARM: SAMSUNG: Reorganize calls to reserve memory for MFC Reorganize code so that "plat/mfc.h" is no more referred from mach-exynos directory. Signed-off-by: Tushar Behera <tushar.behera@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> commit ebf00060c33b9d0946384fa6f440df7ea35a569e Author: Steve Wise <swise@opengridcomputing.com> Date: Wed Mar 19 17:44:40 2014 +0530 RDMA/cxgb4: Always release neigh entry Always release the neigh entry in rx_pkt(). Based on original work by Santosh Rastapur <santosh@chelsio.com>. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <roland@purestorage.com> commit f8e819081f797df355cffbdedb9301ea50ae76b2 Author: Steve Wise <swise@opengridcomputing.com> Date: Wed Mar 19 17:44:39 2014 +0530 RDMA/cxgb4: Allow loopback connections find_route() must treat loopback as a valid egress interface. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <roland@purestorage.com> commit ffd435924c86de055d33fe59941841819eef9f6a Author: Steve Wise <swise@opengridcomputing.com> Date: Wed Mar 19 17:44:38 2014 +0530 RDMA/cxgb4: Cap CQ size at T4_MAX_IQ_SIZE Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <roland@purestorage.com> commit e24a72a3302a638d4c6e77f0b40c45cc61c3f089 Author: Dan Carpenter <dan.carpenter@oracle.com> Date: Sat Oct 19 12:14:35 2013 +0300 RDMA/cxgb4: Fix four byte info leak in c4iw_create_cq() There is a four byte hole at the end of the "uresp" struct after the ->qid_mask member. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Roland Dreier <roland@purestorage.com> commit ff1706f4feb8e0e1a2e56a8dd57e17a4b45649b5 Author: Dan Carpenter <dan.carpenter@oracle.com> Date: Sat Oct 19 12:14:12 2013 +0300 RDMA/cxgb4: Fix underflows in c4iw_create_qp() These sizes should be unsigned so we don't allow negative values and have underflow bugs. These can come from the user so there may be security implications, but I have not tested this. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Roland Dreier <roland@purestorage.com> commit 4726e0b045b80c514377da35ca01467ef6a4de53 Author: Sagar Kamble <sagar.a.kamble@intel.com> Date: Mon Mar 10 17:06:23 2014 +0530 drm/i915: Enabling 128x128 and 256x256 ARGB Cursor Support With this patch we allow larger cursor planes of sizes 128x128 and 256x256. v2: Added more precise check on size while setting cursor plane. v3: Changes related to restructuring cursor size restrictions and DRM_DEBUG usage. v4: Indentation related changes for setting cursor control and implementing DRM_CAP_CURSOR_WIDTH and DRM_CAP_CURSOR_HEIGHT Testcase: igt/kms_cursor_crc Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: David Airlie <airlied@linux.ie> Cc: dri-devel@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org Signed-off-by: G, Pallavi <pallavi.g@intel.com> Signed-off-by: Sagar Kamble <sagar.a.kamble@intel.com> Reviewed-by: Imre Deak <imre.deak@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> commit 61b1a7fbda6f761ebe16a62124578ca0779d9365 Author: Johan Hedberg <johan.hedberg@intel.com> Date: Thu Mar 20 12:54:16 2014 +0200 Bluetooth: Fix address value for early disconnection events We need to ensure that we do not send events to user space with the identity address if we have not yet notified user space of the IRK. The code was previously trying to handle this for the mgmt_pair_device response (which worked well enough) but this is not the only connection related event that might be sent to user space before pairing is successful: another important event is Device Disconnected. The issue can actually be solved more simply than the solution previously used for mgmt_pair_device. Since we do have the identity address tracked as part of the remote IRK struct we can just copy it over from there to the hci_conn struct once we've for real sent the mgmt event for the new IRK. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> commit 204747c970c0d568721c76ab8a57dde0e5dcf0d5 Author: Guenter Roeck <linux@roeck-us.net> Date: Thu Mar 20 08:12:28 2014 -0700 mfd: kempld-core: Fix potential hang-up during boot On PXT and COMe-cPC2 boards it is observed that the hardware mutex is acquired but not being released during initialization. This can result in a hang-up during boot if the driver is built into the kernel. Releasing the mutex twice if it was acquired fixes the problem. Subsequent request/release cycles work as expected, so the fix is only needed during initialization. Cc: <stable@vger.kernel.org> Reviewed-by: Michael Brunner <michael.brunner@kontron.com> Tested-by: Michael Brunner <michael.brunner@kontron.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Lee Jones <lee.jones@linaro.org> commit 5a78401623740c892868d5929b33f5cda8fe819e Author: Krzysztof Kozlowski <k.kozlowski@samsung.com> Date: Tue Mar 18 14:11:26 2014 +0100 mfd: sec-core: Fix uninitialized 'regmap_rtc' on S2MPA01 Initialize the 'regmap_rtc' on S2MPA01 to some sane value. Sane at least for S5M87X chipsets, not S2MPS/S2MPA but it won't be used because rtc-s5m driver does not support S2MPA01. This fixes following error: drivers/mfd/sec-core.c:342:45: warning: ‘regmap_rtc’ may be used uninitialized in this function [-Wuninitialized] Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org> commit 67b3bd4e65f0854aca70e0134d59b1daede49504 Author: Arend van Spriel <arend@broadcom.com> Date: Thu Mar 20 10:18:03 2014 +0100 brcmfmac: fallback to mimo_bw_cap for older firmwares In order to support the driver behaviour introduced by: commit d0575a5a703978c43e25128421158c78534ba100 Author: Daniel Kim <dekim@broadcom.com> Date: Wed Mar 12 18:12:14 2014 -0700 brcmfmac: Enable 40MHz bandwidth in 2GHz band and OBSS scanning in devices that do not support bwcap firmware command a fallback is added. Reviewed-by: Daniel (Deognyoun) Kim <dekim@broadcom.com> Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com> Signed-off-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> commit 4d1a4f16c96d3f4cf6afd92ca3ffb4d2c24875e1 Author: Arend van Spriel <arend@broadcom.com> Date: Thu Mar 20 10:18:02 2014 +0100 brcmfmac: only show error message when brcmf_sdiod_regrw_helper() fails In the function brcmf_sdiod_request_data() an error message is logged, but the calling function retries it. This patch will only log an error message when retry limit is reached. The low-level error is still logged by a SDIO debug message. Reviewed-by: Daniel (Deognyoun) Kim <dekim@broadcom.com> Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com> Signed-off-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> commit 58e9df462fd70a1862378beb46b312f1f6bca94f Author: Arend van Spriel <arend@broadcom.com> Date: Thu Mar 20 10:18:01 2014 +0100 brcmfmac: reinit watchdog completion after handling watchdog The watchdog thread waits on completion that is set from a timer. As the completion is count based this could mean that on a busy system the watchdog is handled multiple times with a very short interval. This is not the intended behaviour. After handling the watchdog it should wait for the next timer expiry. This is accomplished by reinitializing the completion. Reviewed-by: Hante Meuleman <meuleman@broadcom.com> Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com> Signed-off-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> commit d23536796011cbeeb93fc866446800c52deb5603 Author: Daniel Kim <dekim@broadcom.com> Date: Thu Mar 20 10:18:00 2014 +0100 brcmfmac: Enable 40MHz bandwidth in 2GHz band and OBSS scanning operations This patch enables 40MHz bandwidth in 2GHz band after checking whether cfg80211 allows it or not, and enables OBSS scanning operations to to support 20/40 BSS coexistence. Reviewed-by: Arend Van Spriel <arend@broadcom.com> Reviewed-by: Hante Meuleman <meuleman@broadcom.com> Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com> Signed-off-by: Daniel Kim <dekim@broadcom.com> Signed-off-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> commit 1fa3e2eb9db07f30a605c66d1a2fdde4b24e74d5 Author: Steve Dickson <steved@redhat.com> Date: Thu Mar 20 11:23:03 2014 -0400 SUNRPC: Ensure call_connect_status() deals correctly with SOFTCONN tasks Don't schedule an rpc_delay before checking to see if the task is a SOFTCONN because the tk_callback from the delay (__rpc_atrun) clears the task status before the rpc_exit_task can be run. Signed-off-by: Steve Dickson <steved@redhat.com> Fixes: 561ec1603171c (SUNRPC: call_connect_status should recheck...) Link: http://lkml.kernel.org/r/5329CF7C.7090308@RedHat.com Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> commit f5b972e9fbd2e99a2abc3221783d089799b69394 Author: Heiko Carstens <heiko.carstens@de.ibm.com> Date: Thu Mar 20 15:30:14 2014 +0100 compat: include linux/unistd.h within linux/compat.h linux/compat.h does not include linux/unistd.h but the compat.h header file contains various conditional #ifdef __ARCH_WANT_COMPAT_... asmlinkage long compat...() #endif compat system call function declarations. If linux/unistd.h isn't included it depends on previous includes if those __ARCH_WANT_COMPAT_... defines are defined or not. So add an additional linux/unistd.h include. Should fix this compile error on tile: include/uapi/asm-generic/unistd.h:195:1: error: 'compat_sys_getdents64' undeclared make[3]: *** [arch/tile/kernel/compat.o] Error 1 Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Chris Metcalf <cmetcalf@tilera.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> commit e1b2dc176f2d5be7952c47a4e4e8f3b06a90db1c Author: Tejun Heo <tj@kernel.org> Date: Thu Mar 20 11:10:15 2014 -0400 cgroup: break kernfs active_ref protection in cgroup directory operations cgroup_tree_mutex should nest above the kernfs active_ref protection; however, cgroup_create() and cgroup_rename() were grabbing cgroup_tree_mutex while under kernfs active_ref protection. This has actualy possibility to lead to deadlocks in case these operations race against cgroup_rmdir() which invokes kernfs_remove() on directory kernfs_node while holding cgroup_tree_mutex. Neither cgroup_create() or cgroup_rename() requires active_ref protection. The former already has enough synchronization through cgroup_lock_live_group() and the latter doesn't care, so this can be fixed by updating both functions to break all active_ref protections before grabbing cgroup_tree_mutex. While this patch fixes the immediate issue, it probably needs further work in the long term - kernfs directories should enable lockdep annotations and maybe the better way to handle this is marking directory nodes as not needing active_ref protection rather than breaking it in each operation. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> commit 80e0b6e8a001361316a2d62b748fe677ec46b860 Author: Richard Guy Briggs <rgb@redhat.com> Date: Sun Mar 16 14:00:19 2014 -0400 sched: declare pid_alive as inline We accidentally declared pid_alive without any extern/inline connotation. Some platforms were fine with this, some like ia64 and mips were very angry. If the function is inline, the prototype should be inline! on ia64: include/linux/sched.h:1718: warning: 'pid_alive' declared inline after being called Signed-off-by: Richard Guy Briggs <rgb@redhat.com> Signed-off-by: Eric Paris <eparis@redhat.com> commit 579ec9e1ab0bdca2dbc3c942aa1a530a6ec8c349 Author: Eric Paris <eparis@redhat.com> Date: Tue Mar 11 12:55:42 2014 -0400 audit: use uapi/linux/audit.h for AUDIT_ARCH declarations The syscall.h headers were including linux/audit.h but really only needed the uapi/linux/audit.h to get the requisite defines. Switch to the uapi headers. Signed-off-by: Eric Paris <eparis@redhat.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-mips@linux-mips.org Cc: linux-s390@vger.kernel.org Cc: x86@kernel.org commit 5e937a9ae9137899c6641d718bd3820861099a09 Author: Eric Paris <eparis@redhat.com> Date: Tue Mar 11 12:48:43 2014 -0400 syscall_get_arch: remove useless function arguments Every caller of syscall_get_arch() uses current for the task and no implementors of the function need args. So just get rid of both of those things. Admittedly, since these are inline functions we aren't wasting stack space, but it just makes the prototypes better. Signed-off-by: Eric Paris <eparis@redhat.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-mips@linux-mips.org Cc: linux390@de.ibm.com Cc: x86@kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-s390@vger.kernel.org Cc: linux-arch@vger.kernel.org commit b7550787fe8b5beffb5f56fa11a87712d699d085 Author: Joe Perches <jo…

======================================================= [ INFO: possible circular locking dependency detected ] 3.0.0-rc3+ torvalds#26 ------------------------------------------------------- ip/1104 is trying to acquire lock: (local_softirq_lock){+.+...}, at: [<ffffffff81056d12>] __local_lock+0x25/0x68 but task is already holding lock: (sk_lock-AF_INET){+.+...}, at: [<ffffffff81433308>] lock_sock+0x10/0x12 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (sk_lock-AF_INET){+.+...}: [<ffffffff810836e5>] lock_acquire+0x103/0x12e [<ffffffff813e2781>] lock_sock_nested+0x82/0x92 [<ffffffff81433308>] lock_sock+0x10/0x12 [<ffffffff81433afa>] tcp_close+0x1b/0x355 [<ffffffff81453c99>] inet_release+0xc3/0xcd [<ffffffff813dff3f>] sock_release+0x1f/0x74 [<ffffffff813dffbb>] sock_close+0x27/0x2b [<ffffffff81129c63>] fput+0x11d/0x1e3 [<ffffffff81126577>] filp_close+0x70/0x7b [<ffffffff8112667a>] sys_close+0xf8/0x13d [<ffffffff814ae882>] system_call_fastpath+0x16/0x1b -> #0 (local_softirq_lock){+.+...}: [<ffffffff81082ecc>] __lock_acquire+0xacc/0xdc8 [<ffffffff810836e5>] lock_acquire+0x103/0x12e [<ffffffff814a7e40>] _raw_spin_lock+0x3b/0x4a [<ffffffff81056d12>] __local_lock+0x25/0x68 [<ffffffff81056d8b>] local_bh_disable+0x36/0x3b [<ffffffff814a7fc4>] _raw_write_lock_bh+0x16/0x4f [<ffffffff81433c38>] tcp_close+0x159/0x355 [<ffffffff81453c99>] inet_release+0xc3/0xcd [<ffffffff813dff3f>] sock_release+0x1f/0x74 [<ffffffff813dffbb>] sock_close+0x27/0x2b [<ffffffff81129c63>] fput+0x11d/0x1e3 [<ffffffff81126577>] filp_close+0x70/0x7b [<ffffffff8112667a>] sys_close+0xf8/0x13d [<ffffffff814ae882>] system_call_fastpath+0x16/0x1b other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(sk_lock-AF_INET); lock(local_softirq_lock); lock(sk_lock-AF_INET); lock(local_softirq_lock); *** DEADLOCK *** 1 lock held by ip/1104: #0: (sk_lock-AF_INET){+.+...}, at: [<ffffffff81433308>] lock_sock+0x10/0x12 stack backtrace: Pid: 1104, comm: ip Not tainted 3.0.0-rc3+ torvalds#26 Call Trace: [<ffffffff81081649>] print_circular_bug+0x1f8/0x209 [<ffffffff81082ecc>] __lock_acquire+0xacc/0xdc8 [<ffffffff81056d12>] ? __local_lock+0x25/0x68 [<ffffffff810836e5>] lock_acquire+0x103/0x12e [<ffffffff81056d12>] ? __local_lock+0x25/0x68 [<ffffffff81046c75>] ? get_parent_ip+0x11/0x41 [<ffffffff814a7e40>] _raw_spin_lock+0x3b/0x4a [<ffffffff81056d12>] ? __local_lock+0x25/0x68 [<ffffffff81046c8c>] ? get_parent_ip+0x28/0x41 [<ffffffff81056d12>] __local_lock+0x25/0x68 [<ffffffff81056d8b>] local_bh_disable+0x36/0x3b [<ffffffff81433308>] ? lock_sock+0x10/0x12 [<ffffffff814a7fc4>] _raw_write_lock_bh+0x16/0x4f [<ffffffff81433c38>] tcp_close+0x159/0x355 [<ffffffff81453c99>] inet_release+0xc3/0xcd [<ffffffff813dff3f>] sock_release+0x1f/0x74 [<ffffffff813dffbb>] sock_close+0x27/0x2b [<ffffffff81129c63>] fput+0x11d/0x1e3 [<ffffffff81126577>] filp_close+0x70/0x7b [<ffffffff8112667a>] sys_close+0xf8/0x13d [<ffffffff814ae882>] system_call_fastpath+0x16/0x1b Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

======================================================= [ INFO: possible circular locking dependency detected ] 3.0.0-rc3+ #26 ------------------------------------------------------- ip/1104 is trying to acquire lock: (local_softirq_lock){+.+...}, at: [<ffffffff81056d12>] __local_lock+0x25/0x68 but task is already holding lock: (sk_lock-AF_INET){+.+...}, at: [<ffffffff81433308>] lock_sock+0x10/0x12 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (sk_lock-AF_INET){+.+...}: [<ffffffff810836e5>] lock_acquire+0x103/0x12e [<ffffffff813e2781>] lock_sock_nested+0x82/0x92 [<ffffffff81433308>] lock_sock+0x10/0x12 [<ffffffff81433afa>] tcp_close+0x1b/0x355 [<ffffffff81453c99>] inet_release+0xc3/0xcd [<ffffffff813dff3f>] sock_release+0x1f/0x74 [<ffffffff813dffbb>] sock_close+0x27/0x2b [<ffffffff81129c63>] fput+0x11d/0x1e3 [<ffffffff81126577>] filp_close+0x70/0x7b [<ffffffff8112667a>] sys_close+0xf8/0x13d [<ffffffff814ae882>] system_call_fastpath+0x16/0x1b -> #0 (local_softirq_lock){+.+...}: [<ffffffff81082ecc>] __lock_acquire+0xacc/0xdc8 [<ffffffff810836e5>] lock_acquire+0x103/0x12e [<ffffffff814a7e40>] _raw_spin_lock+0x3b/0x4a [<ffffffff81056d12>] __local_lock+0x25/0x68 [<ffffffff81056d8b>] local_bh_disable+0x36/0x3b [<ffffffff814a7fc4>] _raw_write_lock_bh+0x16/0x4f [<ffffffff81433c38>] tcp_close+0x159/0x355 [<ffffffff81453c99>] inet_release+0xc3/0xcd [<ffffffff813dff3f>] sock_release+0x1f/0x74 [<ffffffff813dffbb>] sock_close+0x27/0x2b [<ffffffff81129c63>] fput+0x11d/0x1e3 [<ffffffff81126577>] filp_close+0x70/0x7b [<ffffffff8112667a>] sys_close+0xf8/0x13d [<ffffffff814ae882>] system_call_fastpath+0x16/0x1b other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(sk_lock-AF_INET); lock(local_softirq_lock); lock(sk_lock-AF_INET); lock(local_softirq_lock); *** DEADLOCK *** 1 lock held by ip/1104: #0: (sk_lock-AF_INET){+.+...}, at: [<ffffffff81433308>] lock_sock+0x10/0x12 stack backtrace: Pid: 1104, comm: ip Not tainted 3.0.0-rc3+ #26 Call Trace: [<ffffffff81081649>] print_circular_bug+0x1f8/0x209 [<ffffffff81082ecc>] __lock_acquire+0xacc/0xdc8 [<ffffffff81056d12>] ? __local_lock+0x25/0x68 [<ffffffff810836e5>] lock_acquire+0x103/0x12e [<ffffffff81056d12>] ? __local_lock+0x25/0x68 [<ffffffff81046c75>] ? get_parent_ip+0x11/0x41 [<ffffffff814a7e40>] _raw_spin_lock+0x3b/0x4a [<ffffffff81056d12>] ? __local_lock+0x25/0x68 [<ffffffff81046c8c>] ? get_parent_ip+0x28/0x41 [<ffffffff81056d12>] __local_lock+0x25/0x68 [<ffffffff81056d8b>] local_bh_disable+0x36/0x3b [<ffffffff81433308>] ? lock_sock+0x10/0x12 [<ffffffff814a7fc4>] _raw_write_lock_bh+0x16/0x4f [<ffffffff81433c38>] tcp_close+0x159/0x355 [<ffffffff81453c99>] inet_release+0xc3/0xcd [<ffffffff813dff3f>] sock_release+0x1f/0x74 [<ffffffff813dffbb>] sock_close+0x27/0x2b [<ffffffff81129c63>] fput+0x11d/0x1e3 [<ffffffff81126577>] filp_close+0x70/0x7b [<ffffffff8112667a>] sys_close+0xf8/0x13d [<ffffffff814ae882>] system_call_fastpath+0x16/0x1b Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

Junxiao Bi reports seeing the following deadlock: @ crash> bt 1539 @ PID: 1539 TASK: ffff88178f64a040 CPU: 1 COMMAND: "rpciod/1" @ #0 [ffff88178f64d2c0] schedule at ffffffff8145833a @ #1 [ffff88178f64d348] io_schedule at ffffffff8145842c @ #2 [ffff88178f64d368] sync_page at ffffffff810d8161 @ #3 [ffff88178f64d378] __wait_on_bit at ffffffff8145895b @ #4 [ffff88178f64d3b8] wait_on_page_bit at ffffffff810d82fe @ #5 [ffff88178f64d418] wait_on_page_writeback at ffffffff810e2a1a @ torvalds#6 [ffff88178f64d438] shrink_page_list at ffffffff810e34e1 @ torvalds#7 [ffff88178f64d588] shrink_list at ffffffff810e3dbe @ torvalds#8 [ffff88178f64d6f8] shrink_zone at ffffffff810e425e @ torvalds#9 [ffff88178f64d7b8] do_try_to_free_pages at ffffffff810e4978 @ torvalds#10 [ffff88178f64d828] try_to_free_pages at ffffffff810e4c31 @ torvalds#11 [ffff88178f64d8c8] __alloc_pages_nodemask at ffffffff810de370 @ torvalds#12 [ffff88178f64d978] kmem_getpages at ffffffff8110e18b @ torvalds#13 [ffff88178f64d9a8] fallback_alloc at ffffffff8110e35e @ torvalds#14 [ffff88178f64da08] ____cache_alloc_node at ffffffff8110e51f @ torvalds#15 [ffff88178f64da48] __kmalloc at ffffffff8110efba @ torvalds#16 [ffff88178f64da98] xs_setup_xprt at ffffffffa00a563f [sunrpc] @ torvalds#17 [ffff88178f64dad8] xs_setup_tcp at ffffffffa00a7648 [sunrpc] @ torvalds#18 [ffff88178f64daf8] xprt_create_transport at ffffffffa00a478f [sunrpc] @ torvalds#19 [ffff88178f64db18] rpc_create at ffffffffa00a2d7a [sunrpc] @ torvalds#20 [ffff88178f64dbf8] rpcb_create at ffffffffa00b026b [sunrpc] @ torvalds#21 [ffff88178f64dc98] rpcb_getport_async at ffffffffa00b0c94 [sunrpc] @ torvalds#22 [ffff88178f64ddf8] call_bind at ffffffffa00a11f8 [sunrpc] @ torvalds#23 [ffff88178f64de18] __rpc_execute at ffffffffa00a88ef [sunrpc] @ torvalds#24 [ffff88178f64de58] rpc_async_schedule at ffffffffa00a9187 [sunrpc] @ torvalds#25 [ffff88178f64de78] worker_thread at ffffffff81072ed2 @ torvalds#26 [ffff88178f64dee8] kthread at ffffffff81076df3 @ torvalds#27 [ffff88178f64df48] kernel_thread at ffffffff81012e2a @ crash> Junxiao notes that the problem is not limited to the rpcbind client. In fact we can trigger the exact same problem when trying to reconnect to the server, and we find ourselves calling sock_alloc(). The following solution should work for all kernels that support the PF_MEMALLOC_NOIO flag (i.e. Linux 3.9 and newer). Link: http://lkml.kernel.org/r/53F6F772.6020708@oracle.com Reported-by: Junxiao Bi <junxiao.bi@oracle.com> Cc: stable@vger.kernel.org # 3.9+ Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>

As of commit b92143d ("net: dsa: mv88e6xxx: add infrastructure for phylink_pcs") probing of a Marvell 88e6350 switch causes a NULL pointer de-reference like this example: ... mv88e6085 d0072004.mdio-mii:11: switch 0x3710 detected: Marvell 88E6350, revision 2 8<--- cut here --- Unable to handle kernel NULL pointer dereference at virtual address 00000000 when read [00000000] *pgd=00000000 Internal error: Oops: 5 [#1] ARM Modules linked in: CPU: 0 PID: 8 Comm: kworker/u2:0 Not tainted 6.7.0-rc2-dirty torvalds#26 Hardware name: Marvell Armada 370/XP (Device Tree) Workqueue: events_unbound deferred_probe_work_func PC is at mv88e6xxx_port_setup+0x1c/0x44 LR is at dsa_port_devlink_setup+0x74/0x154 pc : [<c057ea24>] lr : [<c0819598>] psr: a0000013 sp : c184fce0 ip : c542b8f4 fp : 00000000 r10: 00000001 r9 : c542a540 r8 : c542bc00 r7 : c542b838 r6 : c5244580 r5 : 00000005 r4 : c5244580 r3 : 00000000 r2 : c542b840 r1 : 00000005 r0 : c1a02040 ... The Marvell 6350 switch has no SERDES interface and so has no corresponding pcs_ops defined for it. But during probing a call is made to mv88e6xxx_port_setup() which unconditionally expects pcs_ops to exist - though the presence of the pcs_ops->pcs_init function is optional. Modify code to check for pcs_ops first, before checking for and calling pcs_ops->pcs_init. Modify checking and use of pcs_ops->pcs_teardown which may potentially suffer the same problem. Fixes: b92143d ("net: dsa: mv88e6xxx: add infrastructure for phylink_pcs") Signed-off-by: Greg Ungerer <gerg@kernel.org> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>

With previous patch, one of subtests in test_btf_id becomes flaky and may fail. The following is a failing example: Error: torvalds#26 btf Error: torvalds#26/174 btf/BTF ID Error: torvalds#26/174 btf/BTF ID btf_raw_create:PASS:check 0 nsec btf_raw_create:PASS:check 0 nsec test_btf_id:PASS:check 0 nsec ... test_btf_id:PASS:check 0 nsec test_btf_id:FAIL:check BTF lingersdo_test_get_info:FAIL:check failed: -1 The test tries to prove a btf_id not available after the map is closed. But btf_id is freed only after workqueue and a rcu grace period, compared to previous case just after a rcu grade period. To fix the flaky test, I added a kern_sync_rcu() after closing map and before querying btf id availability, essentially ensuring a rcu grace period in the kernel, which seems making the test happy. Signed-off-by: Yonghong Song <yonghong.song@linux.dev>

[ Upstream commit a524eab ] As of commit b92143d ("net: dsa: mv88e6xxx: add infrastructure for phylink_pcs") probing of a Marvell 88e6350 switch causes a NULL pointer de-reference like this example: ... mv88e6085 d0072004.mdio-mii:11: switch 0x3710 detected: Marvell 88E6350, revision 2 8<--- cut here --- Unable to handle kernel NULL pointer dereference at virtual address 00000000 when read [00000000] *pgd=00000000 Internal error: Oops: 5 [#1] ARM Modules linked in: CPU: 0 PID: 8 Comm: kworker/u2:0 Not tainted 6.7.0-rc2-dirty torvalds#26 Hardware name: Marvell Armada 370/XP (Device Tree) Workqueue: events_unbound deferred_probe_work_func PC is at mv88e6xxx_port_setup+0x1c/0x44 LR is at dsa_port_devlink_setup+0x74/0x154 pc : [<c057ea24>] lr : [<c0819598>] psr: a0000013 sp : c184fce0 ip : c542b8f4 fp : 00000000 r10: 00000001 r9 : c542a540 r8 : c542bc00 r7 : c542b838 r6 : c5244580 r5 : 00000005 r4 : c5244580 r3 : 00000000 r2 : c542b840 r1 : 00000005 r0 : c1a02040 ... The Marvell 6350 switch has no SERDES interface and so has no corresponding pcs_ops defined for it. But during probing a call is made to mv88e6xxx_port_setup() which unconditionally expects pcs_ops to exist - though the presence of the pcs_ops->pcs_init function is optional. Modify code to check for pcs_ops first, before checking for and calling pcs_ops->pcs_init. Modify checking and use of pcs_ops->pcs_teardown which may potentially suffer the same problem. Fixes: b92143d ("net: dsa: mv88e6xxx: add infrastructure for phylink_pcs") Signed-off-by: Greg Ungerer <gerg@kernel.org> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>

…json and interface counters Merge in OBUDPST/udpst from lc9892/feature/OBUDPST-26-28-29-30-32-Mostly-json to develop * commit 'd58d764e699f693794d2ef1cb43809fa944b0257': OBUDPST-26-28-29-30-32: JSON and Interface Counters OBUDPST-26-28-29-30-32: JSON and Interface Counters

With previous patch, one of subtests in test_btf_id becomes flaky and may fail. The following is a failing example: Error: torvalds#26 btf Error: torvalds#26/174 btf/BTF ID Error: torvalds#26/174 btf/BTF ID btf_raw_create:PASS:check 0 nsec btf_raw_create:PASS:check 0 nsec test_btf_id:PASS:check 0 nsec ... test_btf_id:PASS:check 0 nsec test_btf_id:FAIL:check BTF lingersdo_test_get_info:FAIL:check failed: -1 The test tries to prove a btf_id not available after the map is closed. But btf_id is freed only after workqueue and a rcu grace period, compared to previous case just after a rcu grade period. Depending on system workload, workqueue could take quite some time to execute function bpf_map_free_deferred() which may cause the test failure. Instead of adding arbitrary delays, let us remove the logic to check btf_id availability after map is closed. Signed-off-by: Yonghong Song <yonghong.song@linux.dev> Link: https://lore.kernel.org/r/20231214203820.1469402-1-yonghong.song@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>

With previous patch, one of subtests in test_btf_id becomes flaky and may fail. The following is a failing example: Error: torvalds#26 btf Error: torvalds#26/174 btf/BTF ID Error: torvalds#26/174 btf/BTF ID btf_raw_create:PASS:check 0 nsec btf_raw_create:PASS:check 0 nsec test_btf_id:PASS:check 0 nsec ... test_btf_id:PASS:check 0 nsec test_btf_id:FAIL:check BTF lingersdo_test_get_info:FAIL:check failed: -1 The test tries to prove a btf_id not available after the map is closed. But btf_id is freed only after workqueue and a rcu grace period, compared to previous case just after a rcu grade period. Depending on system workload, workqueue could take quite some time to execute function bpf_map_free_deferred() which may cause the test failure. Instead of adding arbitrary delays, let us remove the logic to check btf_id availability after map is closed. Signed-off-by: Yonghong Song <yonghong.song@linux.dev> Link: https://lore.kernel.org/r/20231214203820.1469402-1-yonghong.song@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org>

SCX: Use "idle core" instead of "whole cpu"

KSAN calls into rcu code which then triggers a write that reenters into KSAN getting the system stuck doing infinite recursion. #0 kmsan_get_context () at mm/kmsan/kmsan.h:106 #1 __msan_get_context_state () at mm/kmsan/instrumentation.c:331 #2 0xffffffff81495671 in get_current () at ./arch/x86/include/asm/current.h:42 #3 rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379 #4 __rcu_read_lock () at kernel/rcu/tree_plugin.h:402 #5 0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748 torvalds#6 pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016 torvalds#7 kmsan_virt_addr_valid (addr=addr@entry=0xffffffff8620d974 <init_task+1012>) at ./arch/x86/include/asm/kmsan.h:82 torvalds#8 virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/shadow.c:75 torvalds#9 0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff8620d974 <init_task+1012>, is_origin=false) at mm/kmsan/shadow.c:143 torvalds#10 kmsan_get_shadow_origin_ptr (address=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/shadow.c:97 torvalds#11 0xffffffff81b1dbd2 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/instrumentation.c:36 torvalds#12 __msan_metadata_ptr_for_load_4 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:91 torvalds#13 0xffffffff8149568f in rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379 torvalds#14 __rcu_read_lock () at kernel/rcu/tree_plugin.h:402 torvalds#15 0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748 torvalds#16 pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016 torvalds#17 kmsan_virt_addr_valid (addr=addr@entry=0xffffffff8620d974 <init_task+1012>) at ./arch/x86/include/asm/kmsan.h:82 torvalds#18 virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/shadow.c:75 torvalds#19 0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff8620d974 <init_task+1012>, is_origin=false) at mm/kmsan/shadow.c:143 torvalds#20 kmsan_get_shadow_origin_ptr (address=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/shadow.c:97 torvalds#21 0xffffffff81b1dbd2 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/instrumentation.c:36 torvalds#22 __msan_metadata_ptr_for_load_4 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:91 torvalds#23 0xffffffff8149568f in rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379 torvalds#24 __rcu_read_lock () at kernel/rcu/tree_plugin.h:402 torvalds#25 0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748 torvalds#26 pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016 torvalds#27 kmsan_virt_addr_valid (addr=addr@entry=0xffffffff8620d974 <init_task+1012>) at ./arch/x86/include/asm/kmsan.h:82 torvalds#28 virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/shadow.c:75 torvalds#29 0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff8620d974 <init_task+1012>, is_origin=false) at mm/kmsan/shadow.c:143 torvalds#30 kmsan_get_shadow_origin_ptr (address=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/shadow.c:97 torvalds#31 0xffffffff81b1dbd2 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/instrumentation.c:36 torvalds#32 __msan_metadata_ptr_for_load_4 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:91 torvalds#33 0xffffffff8149568f in rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379 torvalds#34 __rcu_read_lock () at kernel/rcu/tree_plugin.h:402 torvalds#35 0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748 torvalds#36 pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016 torvalds#37 kmsan_virt_addr_valid (addr=addr@entry=0xffffffff8620d974 <init_task+1012>) at ./arch/x86/include/asm/kmsan.h:82 torvalds#38 virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/shadow.c:75 torvalds#39 0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff8620d974 <init_task+1012>, is_origin=false) at mm/kmsan/shadow.c:143 torvalds#40 kmsan_get_shadow_origin_ptr (address=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/shadow.c:97 torvalds#41 0xffffffff81b1dbd2 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/instrumentation.c:36 torvalds#42 __msan_metadata_ptr_for_load_4 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:91 torvalds#43 0xffffffff8149568f in rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379 torvalds#44 __rcu_read_lock () at kernel/rcu/tree_plugin.h:402 torvalds#45 0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748 torvalds#46 pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016 torvalds#47 kmsan_virt_addr_valid (addr=addr@entry=0xffffffff8620d974 <init_task+1012>) at ./arch/x86/include/asm/kmsan.h:82 torvalds#48 virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/shadow.c:75 torvalds#49 0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff8620d974 <init_task+1012>, is_origin=false) at mm/kmsan/shadow.c:143 torvalds#50 kmsan_get_shadow_origin_ptr (address=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/shadow.c:97 torvalds#51 0xffffffff81b1dbd2 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/instrumentation.c:36 #52 __msan_metadata_ptr_for_load_4 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:91 #53 0xffffffff8149568f in rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379 torvalds#54 __rcu_read_lock () at kernel/rcu/tree_plugin.h:402 torvalds#55 0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748 torvalds#56 pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016 torvalds#57 kmsan_virt_addr_valid (addr=addr@entry=0xffffffff8620d974 <init_task+1012>) at ./arch/x86/include/asm/kmsan.h:82 #58 virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/shadow.c:75 torvalds#59 0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff8620d974 <init_task+1012>, is_origin=false) at mm/kmsan/shadow.c:143 torvalds#60 kmsan_get_shadow_origin_ptr (address=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/shadow.c:97 torvalds#61 0xffffffff81b1dbd2 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/instrumentation.c:36 torvalds#62 __msan_metadata_ptr_for_load_4 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:91 torvalds#63 0xffffffff8149568f in rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379 torvalds#64 __rcu_read_lock () at kernel/rcu/tree_plugin.h:402 torvalds#65 0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748 torvalds#66 pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016 torvalds#67 kmsan_virt_addr_valid (addr=addr@entry=0xffffffff8620d974 <init_task+1012>) at ./arch/x86/include/asm/kmsan.h:82 torvalds#68 virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/shadow.c:75 torvalds#69 0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff8620d974 <init_task+1012>, is_origin=false) at mm/kmsan/shadow.c:143 #70 kmsan_get_shadow_origin_ptr (address=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/shadow.c:97 torvalds#71 0xffffffff81b1dbd2 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/instrumentation.c:36 torvalds#72 __msan_metadata_ptr_for_load_4 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:91 torvalds#73 0xffffffff8149568f in rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379 torvalds#74 __rcu_read_lock () at kernel/rcu/tree_plugin.h:402 torvalds#75 0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748 torvalds#76 pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016 torvalds#77 kmsan_virt_addr_valid (addr=addr@entry=0xffffffff86203c90) at ./arch/x86/include/asm/kmsan.h:82 torvalds#78 virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff86203c90) at mm/kmsan/shadow.c:75 torvalds#79 0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff86203c90, is_origin=false) at mm/kmsan/shadow.c:143 torvalds#80 kmsan_get_shadow_origin_ptr (address=0xffffffff86203c90, size=8, store=false) at mm/kmsan/shadow.c:97 torvalds#81 0xffffffff81b1dc72 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=8, store=false) at mm/kmsan/instrumentation.c:36 torvalds#82 __msan_metadata_ptr_for_load_8 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:92 torvalds#83 0xffffffff814fdb9e in filter_irq_stacks (entries=<optimized out>, nr_entries=4) at kernel/stacktrace.c:397 torvalds#84 0xffffffff829520e8 in stack_depot_save_flags (entries=0xffffffff8620d974 <init_task+1012>, nr_entries=4, alloc_flags=0, depot_flags=0) at lib/stackdepot.c:500 torvalds#85 0xffffffff81b1e560 in __msan_poison_alloca (address=0xffffffff86203da0, size=24, descr=<optimized out>) at mm/kmsan/instrumentation.c:285 torvalds#86 0xffffffff8562821c in _printk (fmt=0xffffffff85f191a5 "\0016Attempting lock1") at kernel/printk/printk.c:2324 torvalds#87 0xffffffff81942aa2 in kmem_cache_create_usercopy (name=0xffffffff85f18903 "mm_struct", size=1296, align=0, flags=270336, useroffset=<optimized out>, usersize=<optimized out>, ctor=0x0 <fixed_percpu_data>) at mm/slab_common.c:296 torvalds#88 0xffffffff86f337a0 in mm_cache_init () at kernel/fork.c:3262 torvalds#89 0xffffffff86eacb8e in start_kernel () at init/main.c:932 torvalds#90 0xffffffff86ecdf94 in x86_64_start_reservations (real_mode_data=0x140e0 <exception_stacks+28896> <error: Cannot access memory at address 0x140e0>) at arch/x86/kernel/head64.c:555 torvalds#91 0xffffffff86ecde9b in x86_64_start_kernel (real_mode_data=0x140e0 <exception_stacks+28896> <error: Cannot access memory at address 0x140e0>) at arch/x86/kernel/head64.c:536 torvalds#92 0xffffffff810001d3 in secondary_startup_64 () at /pool/workspace/linux/arch/x86/kernel/head_64.S:461 torvalds#93 0x0000000000000000 in ??

As of 5ec8e8e(mm/sparsemem: fix race in accessing memory_section->usage) KMSAN now calls into RCU tree code during kmsan_get_metadata. This will trigger a write that will reenter into KMSAN getting the system stuck doing infinite recursion. #0 kmsan_get_context () at mm/kmsan/kmsan.h:106 #1 __msan_get_context_state () at mm/kmsan/instrumentation.c:331 #2 0xffffffff81495671 in get_current () at ./arch/x86/include/asm/current.h:42 #3 rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379 #4 __rcu_read_lock () at kernel/rcu/tree_plugin.h:402 #5 0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748 torvalds#6 pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016 torvalds#7 kmsan_virt_addr_valid (addr=addr@entry=0xffffffff8620d974 <init_task+1012>) at ./arch/x86/include/asm/kmsan.h:82 torvalds#8 virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/shadow.c:75 torvalds#9 0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff8620d974 <init_task+1012>, is_origin=false) at mm/kmsan/shadow.c:143 torvalds#10 kmsan_get_shadow_origin_ptr (address=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/shadow.c:97 torvalds#11 0xffffffff81b1dbd2 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/instrumentation.c:36 torvalds#12 __msan_metadata_ptr_for_load_4 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:91 torvalds#13 0xffffffff8149568f in rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379 torvalds#14 __rcu_read_lock () at kernel/rcu/tree_plugin.h:402 torvalds#15 0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748 torvalds#16 pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016 torvalds#17 kmsan_virt_addr_valid (addr=addr@entry=0xffffffff8620d974 <init_task+1012>) at ./arch/x86/include/asm/kmsan.h:82 torvalds#18 virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/shadow.c:75 torvalds#19 0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff8620d974 <init_task+1012>, is_origin=false) at mm/kmsan/shadow.c:143 torvalds#20 kmsan_get_shadow_origin_ptr (address=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/shadow.c:97 torvalds#21 0xffffffff81b1dbd2 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/instrumentation.c:36 torvalds#22 __msan_metadata_ptr_for_load_4 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:91 torvalds#23 0xffffffff8149568f in rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379 torvalds#24 __rcu_read_lock () at kernel/rcu/tree_plugin.h:402 torvalds#25 0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748 torvalds#26 pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016 torvalds#27 kmsan_virt_addr_valid (addr=addr@entry=0xffffffff8620d974 <init_task+1012>) at ./arch/x86/include/asm/kmsan.h:82 torvalds#28 virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/shadow.c:75 torvalds#29 0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff8620d974 <init_task+1012>, is_origin=false) at mm/kmsan/shadow.c:143 torvalds#30 kmsan_get_shadow_origin_ptr (address=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/shadow.c:97 torvalds#31 0xffffffff81b1dbd2 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/instrumentation.c:36 torvalds#32 __msan_metadata_ptr_for_load_4 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:91 torvalds#33 0xffffffff8149568f in rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379 torvalds#34 __rcu_read_lock () at kernel/rcu/tree_plugin.h:402 torvalds#35 0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748 torvalds#36 pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016 torvalds#37 kmsan_virt_addr_valid (addr=addr@entry=0xffffffff8620d974 <init_task+1012>) at ./arch/x86/include/asm/kmsan.h:82 torvalds#38 virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/shadow.c:75 torvalds#39 0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff8620d974 <init_task+1012>, is_origin=false) at mm/kmsan/shadow.c:143 torvalds#40 kmsan_get_shadow_origin_ptr (address=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/shadow.c:97 torvalds#41 0xffffffff81b1dbd2 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/instrumentation.c:36 torvalds#42 __msan_metadata_ptr_for_load_4 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:91 torvalds#43 0xffffffff8149568f in rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379 torvalds#44 __rcu_read_lock () at kernel/rcu/tree_plugin.h:402 torvalds#45 0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748 torvalds#46 pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016 torvalds#47 kmsan_virt_addr_valid (addr=addr@entry=0xffffffff8620d974 <init_task+1012>) at ./arch/x86/include/asm/kmsan.h:82 torvalds#48 virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/shadow.c:75 torvalds#49 0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff8620d974 <init_task+1012>, is_origin=false) at mm/kmsan/shadow.c:143 torvalds#50 kmsan_get_shadow_origin_ptr (address=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/shadow.c:97 torvalds#51 0xffffffff81b1dbd2 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/instrumentation.c:36 #52 __msan_metadata_ptr_for_load_4 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:91 #53 0xffffffff8149568f in rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379 torvalds#54 __rcu_read_lock () at kernel/rcu/tree_plugin.h:402 torvalds#55 0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748 torvalds#56 pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016 torvalds#57 kmsan_virt_addr_valid (addr=addr@entry=0xffffffff8620d974 <init_task+1012>) at ./arch/x86/include/asm/kmsan.h:82 #58 virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/shadow.c:75 torvalds#59 0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff8620d974 <init_task+1012>, is_origin=false) at mm/kmsan/shadow.c:143 torvalds#60 kmsan_get_shadow_origin_ptr (address=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/shadow.c:97 torvalds#61 0xffffffff81b1dbd2 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/instrumentation.c:36 torvalds#62 __msan_metadata_ptr_for_load_4 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:91 torvalds#63 0xffffffff8149568f in rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379 torvalds#64 __rcu_read_lock () at kernel/rcu/tree_plugin.h:402 torvalds#65 0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748 torvalds#66 pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016 torvalds#67 kmsan_virt_addr_valid (addr=addr@entry=0xffffffff8620d974 <init_task+1012>) at ./arch/x86/include/asm/kmsan.h:82 torvalds#68 virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/shadow.c:75 torvalds#69 0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff8620d974 <init_task+1012>, is_origin=false) at mm/kmsan/shadow.c:143 #70 kmsan_get_shadow_origin_ptr (address=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/shadow.c:97 torvalds#71 0xffffffff81b1dbd2 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=4, store=false) at mm/kmsan/instrumentation.c:36 torvalds#72 __msan_metadata_ptr_for_load_4 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:91 torvalds#73 0xffffffff8149568f in rcu_preempt_read_enter () at kernel/rcu/tree_plugin.h:379 torvalds#74 __rcu_read_lock () at kernel/rcu/tree_plugin.h:402 torvalds#75 0xffffffff81b2054b in rcu_read_lock () at ./include/linux/rcupdate.h:748 torvalds#76 pfn_valid (pfn=<optimized out>) at ./include/linux/mmzone.h:2016 torvalds#77 kmsan_virt_addr_valid (addr=addr@entry=0xffffffff86203c90) at ./arch/x86/include/asm/kmsan.h:82 torvalds#78 virt_to_page_or_null (vaddr=vaddr@entry=0xffffffff86203c90) at mm/kmsan/shadow.c:75 torvalds#79 0xffffffff81b2023c in kmsan_get_metadata (address=0xffffffff86203c90, is_origin=false) at mm/kmsan/shadow.c:143 torvalds#80 kmsan_get_shadow_origin_ptr (address=0xffffffff86203c90, size=8, store=false) at mm/kmsan/shadow.c:97 torvalds#81 0xffffffff81b1dc72 in get_shadow_origin_ptr (addr=0xffffffff8620d974 <init_task+1012>, size=8, store=false) at mm/kmsan/instrumentation.c:36 torvalds#82 __msan_metadata_ptr_for_load_8 (addr=0xffffffff8620d974 <init_task+1012>) at mm/kmsan/instrumentation.c:92 torvalds#83 0xffffffff814fdb9e in filter_irq_stacks (entries=<optimized out>, nr_entries=4) at kernel/stacktrace.c:397 torvalds#84 0xffffffff829520e8 in stack_depot_save_flags (entries=0xffffffff8620d974 <init_task+1012>, nr_entries=4, alloc_flags=0, depot_flags=0) at lib/stackdepot.c:500 torvalds#85 0xffffffff81b1e560 in __msan_poison_alloca (address=0xffffffff86203da0, size=24, descr=<optimized out>) at mm/kmsan/instrumentation.c:285 torvalds#86 0xffffffff8562821c in _printk (fmt=0xffffffff85f191a5 "\0016Attempting lock1") at kernel/printk/printk.c:2324 torvalds#87 0xffffffff81942aa2 in kmem_cache_create_usercopy (name=0xffffffff85f18903 "mm_struct", size=1296, align=0, flags=270336, useroffset=<optimized out>, usersize=<optimized out>, ctor=0x0 <fixed_percpu_data>) at mm/slab_common.c:296 torvalds#88 0xffffffff86f337a0 in mm_cache_init () at kernel/fork.c:3262 torvalds#89 0xffffffff86eacb8e in start_kernel () at init/main.c:932 torvalds#90 0xffffffff86ecdf94 in x86_64_start_reservations (real_mode_data=0x140e0 <exception_stacks+28896> <error: Cannot access memory at address 0x140e0>) at arch/x86/kernel/head64.c:555 torvalds#91 0xffffffff86ecde9b in x86_64_start_kernel (real_mode_data=0x140e0 <exception_stacks+28896> <error: Cannot access memory at address 0x140e0>) at arch/x86/kernel/head64.c:536 torvalds#92 0xffffffff810001d3 in secondary_startup_64 () at /pool/workspace/linux/arch/x86/kernel/head_64.S:461 torvalds#93 0x0000000000000000 in ??

commit 56925f3 upstream. With previous patch, one of subtests in test_btf_id becomes flaky and may fail. The following is a failing example: Error: torvalds#26 btf Error: torvalds#26/174 btf/BTF ID Error: torvalds#26/174 btf/BTF ID btf_raw_create:PASS:check 0 nsec btf_raw_create:PASS:check 0 nsec test_btf_id:PASS:check 0 nsec ... test_btf_id:PASS:check 0 nsec test_btf_id:FAIL:check BTF lingersdo_test_get_info:FAIL:check failed: -1 The test tries to prove a btf_id not available after the map is closed. But btf_id is freed only after workqueue and a rcu grace period, compared to previous case just after a rcu grade period. Depending on system workload, workqueue could take quite some time to execute function bpf_map_free_deferred() which may cause the test failure. Instead of adding arbitrary delays, let us remove the logic to check btf_id availability after map is closed. Signed-off-by: Yonghong Song <yonghong.song@linux.dev> Link: https://lore.kernel.org/r/20231214203820.1469402-1-yonghong.song@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Samasth Norway Ananda <samasth.norway.ananda@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

t8103: - WLAN (SMC PMU GPIO torvalds#13) t600x: - WLAN (SMC PMU GPIO torvalds#13) - SD (SMC PMU GPIO torvalds#26) Signed-off-by: Hector Martin <marcan@marcan.st>

t8103: - WLAN (SMC PMU GPIO torvalds#13) t600x: - WLAN (SMC PMU GPIO torvalds#13) - SD (SMC PMU GPIO torvalds#26) Signed-off-by: Hector Martin <marcan@marcan.st> (cherry picked from commit 868dda9 https://github.com/AsahiLinux/linux) Signed-off-by: John Cabaj <john.cabaj@canonical.com>

t8103: - WLAN (SMC PMU GPIO torvalds#13) t600x: - WLAN (SMC PMU GPIO torvalds#13) - SD (SMC PMU GPIO torvalds#26) Signed-off-by: Hector Martin <marcan@marcan.st> (cherry picked from commit 095c7f4 https://github.com/AsahiLinux/linux) Signed-off-by: John Cabaj <john.cabaj@canonical.com>

t8103: - WLAN (SMC PMU GPIO torvalds#13) t600x: - WLAN (SMC PMU GPIO torvalds#13) - SD (SMC PMU GPIO torvalds#26) Signed-off-by: Hector Martin <marcan@marcan.st> (cherry picked from commit 868dda9 https://github.com/AsahiLinux/linux) Signed-off-by: John Cabaj <john.cabaj@canonical.com>

t8103: - WLAN (SMC PMU GPIO torvalds#13) t600x: - WLAN (SMC PMU GPIO torvalds#13) - SD (SMC PMU GPIO torvalds#26) Signed-off-by: Hector Martin <marcan@marcan.st> (cherry picked from commit 095c7f4 https://github.com/AsahiLinux/linux) Signed-off-by: John Cabaj <john.cabaj@canonical.com>

When we boot a 3C5000-7A2000 2Node server using "nr_cpus=1 maxcpus=1", we get the following Call Trace: 4.807397] ------------[ cut here ]------------ [ 4.811996] WARNING: CPU: 0 PID: 1 at drivers/acpi/irq.c:63 acpi_register_gsi+0xe0/0x100 [ 4.820048] Modules linked in: [ 4.823082] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.9.0-rc7-next-20240509+ torvalds#26 [ 4.830604] Hardware name: LOONGSON Dabieshan/Loongson-LS2C50C2, BIOS Loongson UEFI (3C50007A2000_Ls2c5lc2) V4.0.13-Dual 12/06/23 17:33:54 [ 4.842964] pc 9000000000bdc6e0 ra 9000000000bdc66c tp 90000002051d4000 sp 90000002051d7ae0 [ 4.851269] a0 0000000000000000 a1 00000000000000a0 a2 0000000000000000 a3 0000000000000000 [ 4.859567] a4 9000000200014518 a5 000000000000003c a6 90000000018876b0 a7 00302e39303a3030 [ 4.867866] t0 0000000000000000 t1 0000000000000080 t2 0000000000000040 t3 0000000000036800 [ 4.876165] t4 0000000000036800 t5 0000000000000004 t6 0000000000000000 t7 0000000000000000 [ 4.884464] t8 900000000800d910 u0 0000000000000000 s9 90000000014bf9e8 s0 00000000000000a0 [ 4.892763] s1 0000000000000000 s2 0000000000000000 s3 9000000001985000 s4 90000002051d7b88 [ 4.901063] s5 0000000000000001 s6 90000002055470b8 s7 90000000014400ac s8 0000000000000008 [ 4.909362] ra: 9000000000bdc66c acpi_register_gsi+0x6c/0x100 [ 4.915330] ERA: 9000000000bdc6e0 acpi_register_gsi+0xe0/0x100 [ 4.921297] CRMD: 000000b0 (PLV0 -IE -DA +PG DACF=CC DACM=CC -WE) [ 4.927446] PRMD: 00000004 (PPLV0 +PIE -PWE) [ 4.931777] EUEN: 00000000 (-FPE -SXE -ASXE -BTE) [ 4.936538] ECFG: 00071c1d (LIE=0,2-4,10-12 VS=7) [ 4.941301] ESTAT: 000c0000 [BRK] (IS= ECode=12 EsubCode=0) [ 4.946838] PRID: 0014c011 (Loongson-64bit, Loongson-3C5000) [ 4.952545] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.9.0-rc7-next-20240509+ torvalds#26 [ 4.960066] Hardware name: LOONGSON Dabieshan/Loongson-LS2C50C2, BIOS Loongson UEFI (3C50007A2000_Ls2c5lc2) V4.0.13-Dual 12/06/23 17:33:54 [ 4.972425] Stack : 9000000001985000 0000000000000000 9000000000223524 90000002051d4000 [ 4.980382] 90000002051d7740 90000002051d7748 0000000000000000 90000002051d7888 [ 4.988338] 90000002051d7880 90000002051d7880 90000002051d7690 0000000000000001 [ 4.996294] 0000000000000001 90000002051d7748 420a070366b7e75d 90000002054f4500 [ 5.004251] 0000000000000001 0000000000000000 4137303030354333 c0000000ffffdfff [ 5.012206] 0000000000000003 00000000000ea642 0000000006b3c000 90000000014bf9e8 [ 5.020163] 0000000000000000 0000000000000000 90000000017f7e80 9000000001985000 [ 5.028119] 0000000000000001 0000000000000000 ffffffffffd7f549 90000000014400ac [ 5.036075] 0000000000000008 0000000000000000 900000000022353c 00007ffff1354000 [ 5.044031] 00000000000000b0 0000000000000004 0000000000000000 0000000000071c1d [ 5.051987] ... [ 5.054410] Call Trace: [ 5.054412] [<900000000022353c>] show_stack+0x5c/0x1a0 [ 5.061940] [<900000000141e86c>] dump_stack_lvl+0x9c/0xc4 [ 5.067305] [<900000000140170c>] __warn+0x94/0xcc [ 5.071977] [<90000000013cd900>] report_bug+0x160/0x220 [ 5.077170] [<900000000141facc>] do_bp+0x26c/0x2e0 [ 5.081929] [<0000000000000000>] 0x0 [ 5.085475] [<9000000000bdc6e0>] acpi_register_gsi+0xe0/0x100 [ 5.091182] [<9000000000bd5350>] acpi_pci_irq_enable+0xd0/0x220 [ 5.097061] [<9000000000b5e8d4>] pci_device_probe+0x54/0x260 [ 5.102683] [<9000000000d1fefc>] really_probe+0xbc/0x320 [ 5.107960] [<9000000000d201f0>] __driver_probe_device+0x90/0x160 [ 5.114012] [<9000000000d202f8>] driver_probe_device+0x38/0x120 [ 5.119892] [<9000000000d205d4>] __driver_attach+0x94/0x1c0 [ 5.125426] [<9000000000d1d7ac>] bus_for_each_dev+0x8c/0x100 [ 5.131046] [<9000000000d1ee30>] bus_add_driver+0xf0/0x240 [ 5.136494] [<9000000000d21688>] driver_register+0x68/0x140 [ 5.142028] [<9000000000220158>] do_one_initcall+0x78/0x200 [ 5.147561] [<9000000001440fcc>] kernel_init_freeable+0x23c/0x2b0 [ 5.153614] [<900000000142123c>] kernel_init+0x1c/0x120 [ 5.158802] [<9000000000221348>] ret_from_kernel_thread+0xc/0xa4 [ 5.166244] ---[ end trace 0000000000000000 ]--- [ 5.170998] GSI: No registered irqchip, giving up The root cause is that when the CPU boot from flat mode, it is unreliable to use cpu_to node to calculate the node number. Therefore, we use NODES_PER_FLATMODE_NODE to calculate the physical node number. According to the 3C5000 user manual, the value of NODES_PER_FLATMODE_NODE should be 4. Signed-off-by: Ming Wang <wangming01@loongson.cn> Signed-off-by: Hongchen Zhang <zhanghongchen@loongson.cn> Signed-off-by: Yanteng Si <siyanteng@loongson.cn>

The dead lock can happen if we try to use printk(), such as a call of SCHED_WARN_ON(), during the rq->__lock is held. The printk() will try to print the message to the console, and the console driver can call queue_work_on(), which will try to obtain rq->__lock again. This means that any WARN during the kernel function that hold the rq->__lock, such as schedule(), sched_ttwu_pending(), etc, can cause dead lock. Following is the call trace of the deadlock case that I encounter: PID: 0 TASK: ff36bfda010c8000 CPU: 156 COMMAND: "swapper/156" #0 crash_nmi_callback+30 #1 nmi_handle+85 #2 default_do_nmi+66 #3 exc_nmi+291 #4 end_repeat_nmi+22 [exception RIP: native_queued_spin_lock_slowpath+96] #5 native_queued_spin_lock_slowpath+96 torvalds#6 _raw_spin_lock+30 torvalds#7 ttwu_queue+111 torvalds#8 try_to_wake_up+375 torvalds#9 __queue_work+462 torvalds#10 queue_work_on+32 torvalds#11 soft_cursor+420 torvalds#12 bit_cursor+898 torvalds#13 hide_cursor+39 torvalds#14 vt_console_print+995 torvalds#15 call_console_drivers.constprop.0+204 torvalds#16 console_unlock+374 torvalds#17 vprintk_emit+280 torvalds#18 printk+88 torvalds#19 __warn_printk+71 torvalds#20 enqueue_task_fair+1779 torvalds#21 activate_task+102 torvalds#22 ttwu_do_activate+155 torvalds#23 sched_ttwu_pending+177 torvalds#24 flush_smp_call_function_from_idle+42 torvalds#25 do_idle+161 torvalds#26 cpu_startup_entry+25 torvalds#27 secondary_startup_64_no_verify+194 Fix this by using __printk_safe_enter()/__printk_safe_exit() in rq_pin_lock()/rq_unpin_lock(). Then, printk will defer to print out the buffers to the console. Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn> Signed-off-by: Bin Lai <laib2@chinatelecom.cn>

t8103: - WLAN (SMC PMU GPIO torvalds#13) t600x: - WLAN (SMC PMU GPIO torvalds#13) - SD (SMC PMU GPIO torvalds#26) Signed-off-by: Hector Martin <marcan@marcan.st>

Tweak to support 1Mbaud and similar baudrates that require Mode16 ins…

cf827bb

…tead of Mode13

alexey-pelykh closed this Nov 27, 2012

vineetgarc referenced this pull request in foss-for-synopsys-dwc-arc-processors/linux Dec 31, 2012

ARC: SMP resurrect #26: Indexing correctly into cpuinfo_arc700[]

86618b8

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

logic10492 pushed a commit to logic10492/linux-amd-zen2 that referenced this pull request Jan 18, 2024

Merge pull request torvalds#26 from sched-ext/whole-to-core

b1e3b3b

SCX: Use "idle core" instead of "whole cpu"

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Tweak to support 1Mbaud and similar baudrates that require Mode16 instea... #26

Tweak to support 1Mbaud and similar baudrates that require Mode16 instea... #26

alexey-pelykh commented Nov 27, 2012

torvalds commented Nov 27, 2012

Tweak to support 1Mbaud and similar baudrates that require Mode16 instea... #26

Tweak to support 1Mbaud and similar baudrates that require Mode16 instea... #26

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alexey-pelykh commented Nov 27, 2012

torvalds commented Nov 27, 2012