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On 31 Oct 2007 at 22:46, Brian Kroth wrote: |
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> but not ever (yet) with this |
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> |
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> cactid --verbosity=5 -f 1 -l 10 |
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what does the -l switch do? |
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> The version of cactid in portage is slightly old. After updating from |
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> 0.8.6i-r1 to 0.8.6j the problem seems to happen less frequently, but |
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> still happens. With that in mind might this actually be a software |
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> problem and not a kernel problem? Shouldn't PAX be preventing userland |
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> software from screwing up the page table? |
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i'm almost sure it's a bug somewhere in vma mirroring as that's the |
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only thing i changed in .22 and on and it does play with page locking |
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(the bad page state is triggered because a to-be-freed page is still |
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locked, that's means there's a missing unlock somewhere in the code, |
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but i couldn't figure it out from the code yet). |
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> I can send more kernel output if anyone's interested. Any thoughts on |
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> what else I should be doing to test this? |
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i'll need your mm/memory.o from the failing kernel and if it occured on |
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multiple machines or kernels, indicate which of your report corresponds |
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to which .o (well, i can find it out from the disasm eventually, but it |
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helps me if i don't have to ;-). then can you send me a /proc/pid/maps file |
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from cactid and nagios (if you use grsec make sure that addresses are not |
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hidden and preferably not randomized either)? |
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-- |
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