linux-kernel - Re: crashme fault

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Message-ID: <46EC2702.3090000@oracle.com>
Date:	Sat, 15 Sep 2007 11:40:02 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Andi Kleen <andi@...stfloor.org>
CC:	Linus Torvalds <torvalds@...ux-foundation.org>,
	lkml <linux-kernel@...r.kernel.org>, Andi Kleen <ak@...e.de>
Subject: Re: crashme fault

Andi Kleen wrote:
>> Andi, anything comes to mind?
> 
> No, unfortunately not. There weren't any changes to entry.S recently
> that could corrupt the error code as far as I remember. Also cannot think of 
> something else.
> 
> A version where it started happening would be useful.

I'll begin testing older kernels then.


Had another on recent last night (probably not helpful):

[58169.607164] Unable to handle kernel paging request at 00000000ff018915 RIP:
[58169.611784]  [<0000000000506986>]
[58169.617570] PGD d4380067 PUD 0
[58169.620757] Oops: 0000 [1] SMP
[58169.623943] CPU 2
[58169.625970] Modules linked in: loop
[58169.629496] Pid: 26735, comm: crashme Not tainted 2.6.23-rc6-git4 #1
[58169.635842] RIP: 0033:[<0000000000506986>]  [<0000000000506986>]
[58169.641861] RSP: 002b:00007fff14d3f9a0  EFLAGS: 00010247
[58169.647171] RAX: 0000000000506909 RBX: 00002b8695e82c00 RCX: 00002b8695f15b37
[58169.654298] RDX: 0000000000000000 RSI: 0000000000401476 RDI: 000000000000000a
[58169.661426] RBP: 00007fff14d3f9a0 R08: 00007fff14d3f8f0 R09: 0000000000000000
[58169.668553] R10: 0000000000000008 R11: 0000000000000212 R12: 0000000000000000
[58169.675680] R13: 00007fff14d3fb90 R14: 0000000000000000 R15: 0000000000000000
[58169.682808] FS:  00002b86960b46d0(0000) GS:ffff81011fc75840(0000) knlGS:0000000000000000
[58169.690889] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[58169.696630] CR2: 00000000ff018915 CR3: 00000000d8820000 CR4: 00000000000006e0
[58169.703757] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[58169.710885] DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400
[58169.718014] Process crashme (pid: 26735, threadinfo ffff8100cd176000, task ffff81011fffe040)
[58169.726439]
[58169.727937] RIP  [<0000000000506986>]
[58169.731609]  RSP <00007fff14d3f9a0>
[58169.735100] CR2: 00000000ff018915
[58169.738710] Kernel panic - not syncing: Fatal exception
[58169.743953] Rebooting in 30 seconds..

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