* BUG: MAX_LOCK_DEPTH too low!
@ 2012-12-17 8:14 Kirill A. Shutemov
2012-12-17 8:17 ` Gleb Natapov
0 siblings, 1 reply; 2+ messages in thread
From: Kirill A. Shutemov @ 2012-12-17 8:14 UTC (permalink / raw)
To: Marcelo Tosatti, Gleb Natapov; +Cc: kvm, linux-mm, linux-kernel
Hi,
I've got this BUG on up-to-date Linus tree (aed606e):
[ 1145.439071] BUG: MAX_LOCK_DEPTH too low!
[ 1145.439077] turning off the locking correctness validator.
[ 1145.439081] Pid: 4619, comm: kvm Not tainted 3.7.0-08682-gaed606e-dirty #166
[ 1145.439084] Call Trace:
[ 1145.439094] [<ffffffff810e6094>] __lock_acquire.isra.24+0xc54/0xe10
[ 1145.439099] [<ffffffff810e6873>] lock_acquire+0x93/0x140
[ 1145.439106] [<ffffffff8117bfa8>] ? mm_take_all_locks+0x148/0x1b0
[ 1145.439111] [<ffffffff8173d239>] down_write+0x49/0x90
[ 1145.439115] [<ffffffff8117bfa8>] ? mm_take_all_locks+0x148/0x1b0
[ 1145.439119] [<ffffffff8117bfa8>] mm_take_all_locks+0x148/0x1b0
[ 1145.439124] [<ffffffff81192253>] ? do_mmu_notifier_register+0x153/0x180
[ 1145.439128] [<ffffffff8119217f>] do_mmu_notifier_register+0x7f/0x180
[ 1145.439132] [<ffffffff811922b3>] mmu_notifier_register+0x13/0x20
[ 1145.439138] [<ffffffff81006036>] kvm_dev_ioctl+0x3e6/0x520
[ 1145.439142] [<ffffffff810e40e8>] ? debug_check_no_locks_freed+0xd8/0x170
[ 1145.439148] [<ffffffff811be6c7>] do_vfs_ioctl+0x97/0x540
[ 1145.439152] [<ffffffff811bec01>] sys_ioctl+0x91/0xb0
[ 1145.439158] [<ffffffff8132464e>] ? trace_hardirqs_on_thunk+0x3a/0x3f
[ 1145.439163] [<ffffffff817478c6>] system_call_fastpath+0x1a/0x1f
--
Kirill A. Shutemov
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: BUG: MAX_LOCK_DEPTH too low!
2012-12-17 8:14 BUG: MAX_LOCK_DEPTH too low! Kirill A. Shutemov
@ 2012-12-17 8:17 ` Gleb Natapov
0 siblings, 0 replies; 2+ messages in thread
From: Gleb Natapov @ 2012-12-17 8:17 UTC (permalink / raw)
To: Kirill A. Shutemov
Cc: Marcelo Tosatti, kvm, linux-mm, linux-kernel, Andrea Arcangeli
Copying Andrea.
On Mon, Dec 17, 2012 at 10:14:47AM +0200, Kirill A. Shutemov wrote:
> Hi,
>
> I've got this BUG on up-to-date Linus tree (aed606e):
>
> [ 1145.439071] BUG: MAX_LOCK_DEPTH too low!
> [ 1145.439077] turning off the locking correctness validator.
> [ 1145.439081] Pid: 4619, comm: kvm Not tainted 3.7.0-08682-gaed606e-dirty #166
> [ 1145.439084] Call Trace:
> [ 1145.439094] [<ffffffff810e6094>] __lock_acquire.isra.24+0xc54/0xe10
> [ 1145.439099] [<ffffffff810e6873>] lock_acquire+0x93/0x140
> [ 1145.439106] [<ffffffff8117bfa8>] ? mm_take_all_locks+0x148/0x1b0
> [ 1145.439111] [<ffffffff8173d239>] down_write+0x49/0x90
> [ 1145.439115] [<ffffffff8117bfa8>] ? mm_take_all_locks+0x148/0x1b0
> [ 1145.439119] [<ffffffff8117bfa8>] mm_take_all_locks+0x148/0x1b0
> [ 1145.439124] [<ffffffff81192253>] ? do_mmu_notifier_register+0x153/0x180
> [ 1145.439128] [<ffffffff8119217f>] do_mmu_notifier_register+0x7f/0x180
> [ 1145.439132] [<ffffffff811922b3>] mmu_notifier_register+0x13/0x20
> [ 1145.439138] [<ffffffff81006036>] kvm_dev_ioctl+0x3e6/0x520
> [ 1145.439142] [<ffffffff810e40e8>] ? debug_check_no_locks_freed+0xd8/0x170
> [ 1145.439148] [<ffffffff811be6c7>] do_vfs_ioctl+0x97/0x540
> [ 1145.439152] [<ffffffff811bec01>] sys_ioctl+0x91/0xb0
> [ 1145.439158] [<ffffffff8132464e>] ? trace_hardirqs_on_thunk+0x3a/0x3f
> [ 1145.439163] [<ffffffff817478c6>] system_call_fastpath+0x1a/0x1f
>
> --
> Kirill A. Shutemov
--
Gleb.
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2012-12-17 8:17 ` Gleb Natapov
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