Re: [bug] SLOB crash, 2.6.24-rc2

From: Matt Mackall
Date: Wed Nov 14 2007 - 12:37:31 EST


On Wed, Nov 14, 2007 at 12:20:01PM +0100, Ingo Molnar wrote:
>
> there's a new SLOB regression - the attached config crashes with:
>
> [ 61.245190] rc.sysinit used greatest stack depth: 1680 bytes left
> [ 61.386859] list_add corruption. prev->next should be next (407d973c), but was 418cf818. (prev=41877098).
> [ 61.396328] ------------[ cut here ]------------
> [ 61.400910] kernel BUG at lib/list_debug.c:33!
> [ 61.405330] invalid opcode: 0000 [#1] DEBUG_PAGEALLOC
>
> looks like memory corruption of some sort and it's reproducible. Picking
> CONFIG_SLUB makes the crash go away. Booting v2.6.23 with the same
> .config works fine.

Hmmm, the changes in SLOB since v2.6.23 are all trivial. I'll try to
reproduce it with your config, but it doesn't seem promising.

--
Mathematics is the supreme nostalgia of our time.
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