Messages in this thread | | | Date | Wed, 23 Jul 2008 22:39:22 +0200 | From | "Vegard Nossum" <> | Subject | Re: recent -git: BUG in free_thread_xstate |
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Hi!
On Wed, Jul 23, 2008 at 10:31 PM, Suresh Siddha <suresh.b.siddha@intel.com> wrote: > On Wed, Jul 23, 2008 at 01:07:04PM -0700, Vegard Nossum wrote: >> Hi, >> >> I just got this on c010b2f76c3032e48097a6eef291d8593d5d79a6 (-git from >> yesterday): > > Do you see this in 2.6.26 aswell? I suspect it is coming from post 2.6.26 > changes.
Just reproduced it on latest linux-2.6.git.
>> BUG: unable to handle kernel paging request at 00664381 >> IP: [<c010b274>] free_thread_xstate+0x4/0x30 > ... >
The funny thing is that this number (00664281) is _always_ the same, even on the newer kernel. What's special about it?
>> EIP is at arch/x86/kernel/process.c:36: >> >> if (tsk->thread.xstate) { >> > > It looks like the kernel stack of that process got corrupted, corrupting the > task pointer in thread_info. Can you send us your config file?
It has been uploaded here:
http://userweb.kernel.org/~vegard/bugs/20080724-fork/config
Given the reproducible nature of this, I think I'll just go ahead and start a bisect...
Thanks for looking :-)
Vegard
-- "The animistic metaphor of the bug that maliciously sneaked in while the programmer was not looking is intellectually dishonest as it disguises that the error is the programmer's own creation." -- E. W. Dijkstra, EWD1036
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