linux-kernel - Re: WARNING: at arch/x86_64/kernel/smp.c:379 smp_call_function

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <46C05017.3050806@qumranet.com>
Date:	Mon, 13 Aug 2007 15:35:35 +0300
From:	Avi Kivity <avi@...ranet.com>
To:	Paolo Ornati <ornati@...twebnet.it>
CC:	Michal Piotrowski <michal.k.k.piotrowski@...il.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	kvm-devel@...ts.sourceforge.net
Subject: Re: WARNING: at arch/x86_64/kernel/smp.c:379 smp_call_function_single()

Paolo Ornati wrote:
> On Fri, 10 Aug 2007 14:04:33 +0200
> "Michal Piotrowski" <michal.k.k.piotrowski@...il.com> wrote:
>
>   
>>> [  756.707601] Disabling non-boot CPUs ...
>>> [  756.712034] kvm: disabling virtualization on CPU1
>>> [  756.712037] WARNING: at arch/x86_64/kernel/smp.c:379 smp_call_function_single()
>>> [  756.712039]
>>> [  756.712039] Call Trace:
>>> [  756.712046]  [<ffffffff8021d159>] smp_call_function_single+0x119/0x120
>>> [  756.712050]  [<ffffffff80542169>] thread_return+0x1bf/0x626
>>> [  756.712054]  [<ffffffff80234b5b>] sys_sched_yield+0x2b/0x80
>>> [  756.712057]  [<ffffffff8043684b>] kvm_cpu_hotplug+0x4b/0xa0
>>> [  756.712060]  [<ffffffff80247c83>] notifier_call_chain+0x53/0x80
>>> [  756.712062]  [<ffffffff80247d09>] __raw_notifier_call_chain+0x9/0x10
>>> [  756.712065]  [<ffffffff80247d21>] raw_notifier_call_chain+0x11/0x20
>>> [  756.712068]  [<ffffffff8026184b>] take_cpu_down+0x1b/0x30
>>> [  756.712071]  [<ffffffff802699d2>] do_stop+0xd2/0x150
>>> [  756.712073]  [<ffffffff80269900>] do_stop+0x0/0x150
>>> [  756.712076]  [<ffffffff8024f84d>] kthread+0x4d/0x80
>>> [  756.712079]  [<ffffffff8020cb28>] child_rip+0xa/0x12
>>> [  756.712081]  [<ffffffff8020c23c>] restore_args+0x0/0x30
>>> [  756.712084]  [<ffffffff8024f800>] kthread+0x0/0x80
>>> [  756.712086]  [<ffffffff8020cb1e>] child_rip+0x0/0x12
>>> [  756.712087]
>>> [  756.815693] CPU 1 is now offline
>>> [  756.815697] lockdep: not fixing up alternatives.
>>> [  756.819276] CPU1 is down
>>>  
>>>       
>> Added to KR list, thanks for the report.
>>     
>
>
> I've bisected it down to this commit:
>
> cec9ad279b66793bee0b5009b7ca311060061efd
>
>     KVM: Use CPU_DYING for disabling virtualization
>     
>     Only at the CPU_DYING stage can we be sure that no user process will
>     be scheduled onto the cpu and oops when trying to use virtualization
>     extensions.
>
>   

Thanks.  I'll have a go at it.


-- 
error compiling committee.c: too many arguments to function

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/