[Bug 64221] Warning at kernel/mutex.c:514 __mutex_lock_slowpath+0x27f/0x340

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=64221

Peter <lekensteyn at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |lekensteyn at gmail.com

--- Comment #5 from Peter <lekensteyn at gmail.com> ---
The warning is still present in 3.14 (first noticed with 3.13):

[    9.528838] ------------[ cut here ]------------
[    9.529145] WARNING: CPU: 1 PID: 0 at kernel/locking/mutex.c:516
__mutex_lock_slowpath+0x357/0x370()
[    9.529764] DEBUG_LOCKS_WARN_ON(in_interrupt())
[    9.529999] Modules linked in:
[    9.530197]  [..]
[    9.533605] CPU: 1 PID: 0 Comm: swapper/1 Not tainted
3.14.0-rc2-custom-00267-g9398a10 #4
[    9.533992] Hardware name: Shuttle Inc. XS36V/XS36V, BIOS 1.11 12/18/2012
[    9.534313]  0000000000000009 ffff88012fc83d10 ffffffff8146cca0
ffff88012fc83d58
[    9.534709]  ffff88012fc83d48 ffffffff8104c45d ffff880129218c18
ffff880129218c18
[    9.535102]  ffff880129ac6bf0 0000000080808081 ffff880037aba12c
ffff88012fc83da8
[    9.535496] Call Trace:
[    9.535616]  <IRQ>  [<ffffffff8146cca0>] dump_stack+0x4d/0x6f
[    9.535923]  [<ffffffff8104c45d>] warn_slowpath_common+0x7d/0xa0
[    9.536210]  [<ffffffff8104c4cc>] warn_slowpath_fmt+0x4c/0x50
[    9.536487]  [<ffffffff812303f5>] ? blk_run_queue+0x35/0x40
[    9.536755]  [<ffffffff814710e7>] __mutex_lock_slowpath+0x357/0x370
[    9.537055]  [<ffffffff81471112>] mutex_lock+0x12/0x22
[    9.537310]  [<ffffffffa0607536>] do_gma_backlight_set+0x26/0x50
[gma500_gfx]
[    9.537654]  [<ffffffffa060761b>] gma_backlight_set+0x3b/0x40 [gma500_gfx]
[    9.537987]  [<ffffffffa0617d94>] psb_intel_opregion_asle_intr+0xb4/0x100
[gma500_gfx]
[    9.538369]  [<ffffffffa0615f98>] psb_irq_handler+0x1e8/0x1f0 [gma500_gfx]
[    9.538699]  [<ffffffff8109ff4e>] handle_irq_event_percpu+0x3e/0x210
[    9.539002]  [<ffffffff810a015d>] handle_irq_event+0x3d/0x60
[    9.539274]  [<ffffffff810a2b47>] handle_edge_irq+0x77/0x140
[    9.539545]  [<ffffffff81004b7e>] handle_irq+0x1e/0x30
[    9.539792]  [<ffffffff8147c0cf>] do_IRQ+0x4f/0xf0
[    9.540024]  [<ffffffff81472a6a>] common_interrupt+0x6a/0x6a
[    9.540292]  <EOI>  [<ffffffff814722e5>] ? _raw_spin_unlock_irq+0x15/0x30
[    9.540642]  [<ffffffff810794aa>] finish_task_switch+0x4a/0xc0
[    9.540922]  [<ffffffff8146e260>] __schedule+0x340/0x8d0
[    9.541178]  [<ffffffff8102f7fd>] ? lapic_next_event+0x1d/0x30
[    9.541459]  [<ffffffff810b333b>] ? clockevents_program_event+0x6b/0xf0
[    9.541776]  [<ffffffff81071704>] ? __hrtimer_start_range_ns+0x1e4/0x3c0
[    9.542096]  [<ffffffff8146e819>] schedule+0x29/0x70
[    9.542334]  [<ffffffff8146ec16>] schedule_preempt_disabled+0x16/0x20
[    9.542642]  [<ffffffff8109f523>] cpu_startup_entry+0x113/0x270
[    9.542926]  [<ffffffff8102e2be>] start_secondary+0x1ce/0x270
[    9.543199] ---[ end trace b803e0b43866ca06 ]---

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