Messages in this thread | | | Date | Thu, 20 Dec 2007 23:13:57 +0100 | From | Ingo Molnar <> | Subject | Re: almost daily Kernel oops with 2.6.23.9 - and now 2.6.23.11 as well |
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* Pekka Enberg <penberg@cs.helsinki.fi> wrote:
> Nah, it's just that vma->anon_vma is probably supposed to be NULL > here. And if you look at all the oopses, they do suggest one > particular byte lane is dodgy (the corruption is in bits 41-43 and > 45). > > The whole thing reminds me of another bug where memtest86 didn't find > anything because it's doing cached memory accesses: > http://lkml.org/lkml/2007/10/3/259
memtest86+ has an uncached test:
const struct tseq tseq[] = { {1, 5, 3, 0, 0, "[Address test, walking ones] "}, {1, 6, 3, 2, 0, "[Address test, own address] "}, {1, 0, 3, 14, 0, "[Moving inversions, ones & zeros] "}, {1, 1, 2, 80, 0, "[Moving inversions, 8 bit pattern] "}, {1, 10, 60, 300, 0, "[Moving inversions, random pattern] "}, {1, 7, 64, 66, 0, "[Block move, 64 moves] "}, {1, 2, 2, 320, 0, "[Moving inversions, 32 bit pattern] "}, {1, 9, 40, 120, 0, "[Random number sequence] "}, {1, 3, 4, 240, 0, "[Modulo 20, ones & zeros] "}, {1, 8, 1, 2, 0, "[Bit fade test, 90 min, 2 patterns] "}, {0, 4, 3, 2, 0, "[[Moving inversions, 0 & 1, uncached] "}, {0, 0, 0, 0, 0, NULL} };
find that "Moving inversions, 0 & 1" test and run that one alone, overnight.
Ingo
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