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From: pageexec@freemail.hu
To: Ingo Molnar <mingo@elte.hu>
Cc: Sam Ravnborg <sam@ravnborg.org>,
	Arjan van de Ven <arjan@infradead.org>,
	linux-kernel@vger.kernel.org, torvalds@linux-foundation.org
Subject: Re: vmsplice exploits, stack protector and Makefiles
Date: Wed, 13 Feb 2008 18:15:13 +0200	[thread overview]
Message-ID: <47B333B1.28931.A31602E@pageexec.freemail.hu> (raw)
In-Reply-To: <20080213164853.GA25476@elte.hu>

On 13 Feb 2008 at 17:48, Ingo Molnar wrote:

> hm, had to pull it again because it crashed in testing:

i've only tested .24, not .25 so maybe something changed. did you
make sure that

  write_pda(stack_canary, next_p->stack_canary);

was removed from arch/x86/kernel/process_64.c:__switch_to? that's
the only reason i can think of that would trigger this trace.

> CPU: Physical Processor ID: 0
> CPU: Processor Core ID: 1
> AMD Athlon(tm) 64 X2 Dual Core Processor 3800+ stepping 02
> Brought up 2 CPUs
> stack corrupted in: thread_return+0xd0/0xe2
> Pid: 0, comm: swapper Not tainted 2.6.25-rc1 #3
> 
> Call Trace:
>  [<ffffffff80242018>] __stack_chk_fail+0x2a/0x68
>  [<ffffffff807a0478>] thread_return+0xd0/0xe2
>  [<ffffffff8025f5c3>] getnstimeofday+0x3f/0xab
>  [<ffffffff8025cfc7>] ktime_get_ts+0x27/0x6f
>  [<ffffffff8025d02b>] ktime_get+0x1c/0x66
>  [<ffffffff802639af>] tick_nohz_stop_idle+0x39/0x76
>  [<ffffffff8020b204>] cpu_idle+0xb6/0xca
> 
> Kernel panic - not syncing: stack-protector: Kernel stack is corrupted
> 
> config attached.
> 
> 	Ingo
> 




  reply	other threads:[~2008-02-13 17:16 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-12 17:00 Arjan van de Ven
2008-02-12 18:50 ` Sam Ravnborg
2008-02-12 19:08   ` Arjan van de Ven
2008-02-12 19:36     ` Sam Ravnborg
2008-02-13 13:38 ` pageexec
2008-02-13 15:29   ` Ingo Molnar
2008-02-13 16:29     ` Randy Dunlap
2008-02-13 15:48       ` pageexec
2008-02-14 12:20         ` Jan Engelhardt
2008-02-13 16:48     ` Ingo Molnar
2008-02-13 16:15       ` pageexec [this message]
2008-02-14  6:16         ` Ingo Molnar
2008-02-14  7:30           ` Ingo Molnar
2008-02-14 10:23             ` pageexec
2008-02-13 15:53   ` Linus Torvalds
2008-02-13 16:01     ` Ingo Molnar
2008-02-13 17:16       ` Sam Ravnborg
2008-02-14  6:12         ` Ingo Molnar
2008-02-14  7:43   ` Sam Ravnborg

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