linux-kernel - Re: [Bug #22532] 2.6.37-rc1: BUG: scheduling while atomic (kvm

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Date:	Fri, 3 Dec 2010 22:26:49 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Thomas Meyer <thomas@...3r.de>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Maciej Rutecki <maciej.rutecki@...il.com>,
	Florian Mickler <florian@...kler.org>
Subject: Re: [Bug #22532] 2.6.37-rc1: BUG: scheduling while atomic (kvm_init)

On Friday, December 03, 2010, Thomas Meyer wrote:
> Am Freitag, den 03.12.2010, 00:41 +0100 schrieb Rafael J. Wysocki:
> > This message has been generated automatically as a part of a summary report
> > of recent regressions.
> > 
> 
> The BUG still happens:
> 
> [    0.502550] BUG: scheduling while atomic: swapper/1/0x00000002
> [    0.502574] Modules linked in:
> [    0.502577] Pid: 1, comm: swapper Not tainted 2.6.37-rc4-00153-g59e57c6 #104
> [    0.502579] Call Trace:
> [    0.502581]  [<ffffffff81052552>] __schedule_bug+0x5a/0x5e
> [    0.502585]  [<ffffffff816f0492>] schedule+0xd4/0x592
> [    0.502588]  [<ffffffff8105010e>] ? resched_task+0x68/0x6d
> [    0.502591]  [<ffffffff8105009c>] ? test_tsk_need_resched+0x12/0x1c
> [    0.502595]  [<ffffffff816f0b91>] schedule_timeout+0x31/0xde
> [    0.502598]  [<ffffffff81057654>] ? wake_up_process+0x10/0x12
> [    0.502602]  [<ffffffff8106c73c>] ? wake_up_worker+0x1f/0x21
> [    0.502605]  [<ffffffff8106c795>] ? insert_work+0x57/0x5f
> [    0.502608]  [<ffffffff816f1e5e>] ? _raw_spin_unlock_irqrestore+0x20/0x2b
> [    0.502611]  [<ffffffff816f02ac>] wait_for_common+0x98/0x10e
> [    0.502614]  [<ffffffff81057628>] ? default_wake_function+0x0/0xf
> [    0.502618]  [<ffffffff816f03bc>] wait_for_completion+0x18/0x1a
> [    0.502621]  [<ffffffff8106c160>] call_usermodehelper_exec+0x82/0xd1
> [    0.502624]  [<ffffffff812c7053>] kobject_uevent_env+0x3e6/0x422
> [    0.502628]  [<ffffffff812c709a>] kobject_uevent+0xb/0xd
> [    0.502632]  [<ffffffff81390748>] device_add+0x360/0x4f6
> [    0.502635]  [<ffffffff813908f7>] device_register+0x19/0x1e
> [    0.502639]  [<ffffffff81390988>] device_create_vargs+0x8c/0xc4
> [    0.502642]  [<ffffffff813909ec>] device_create+0x2c/0x2e
> [    0.502646]  [<ffffffff813587df>] misc_register+0xba/0x113
> [    0.502649]  [<ffffffff81001e83>] kvm_init+0x1d1/0x2dc
> [    0.502652]  [<ffffffff81d39ab1>] ? pci_iommu_init+0x0/0x41
> [    0.502655]  [<ffffffff81d37505>] ? svm_init+0x0/0x1e
> [    0.502657]  [<ffffffff81d37521>] svm_init+0x1c/0x1e
> [    0.502660]  [<ffffffff810002f8>] do_one_initcall+0x7a/0x12a
> [    0.502663]  [<ffffffff81d34cfb>] kernel_init+0x133/0x1bd
> [    0.502667]  [<ffffffff81026794>] kernel_thread_helper+0x4/0x10
> [    0.502670]  [<ffffffff81d34bc8>] ? kernel_init+0x0/0x1bd
> [    0.502673]  [<ffffffff81026790>] ? kernel_thread_helper+0x0/0x10
> [    0.502754] initcall svm_init+0x0/0x1e returned with preemption imbalance 

Thanks for the update.

Rafael

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