Messages in this thread | | | Date | Fri, 18 Jul 2008 11:05:06 +0200 | From | Ingo Molnar <> | Subject | Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison overwritten |
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* Vegard Nossum <vegard.nossum@gmail.com> wrote:
> But.. it could also be some random corruption coming from elsewhere. > Maybe even bad RAM (it's just a single bit anyway). But that's less > likely.
ok, i looked at the logs once more and while i thought that it occured twice it only occured once:
Jul 17 20:22:14 europe kernel: BUG skbuff_head_cache: Poison overwritten
... this would explain why my attempts to bisect and reproduce it failed. I got too excited about it being seemingly reproducible and possibly bisectable (memory corruption bugs rarely are). My overnight reboot-the-same-kernel tests didnt show anything either.
It's a known-reliable system with thousands of bootups:
Jul 17 20:20:54 europe kernel: Linux version 2.6.26-tip (mingo@europe) (gcc version 4.2.2) #3094 SMP Thu Jul 17 20:19:27 CEST 2008
... but a hw fluke is never out of question. (It wasnt a particularly hot day but the evening was unusually humid, maybe that made the difference.)
So lets close this for now, it's not a reproducible regression that we can act upon. I'll update this thread if anything new happens. Netconsole is reliable on this system in any case.
Ingo
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