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    SubjectRe: KVM induced panic on 2.6.38[2367] & 2.6.39
    On 31/05/11 18:38, Borislav Petkov wrote:
    > On Tue, May 31, 2011 at 05:26:10PM +0800, Brad Campbell wrote:
    >> On 31/05/11 13:47, Borislav Petkov wrote:
    >>> Looks like a KSM issue. Disabling CONFIG_KSM should at least stop your
    >>> machine from oopsing.
    >>> Adding linux-mm.
    >> I initially thought that, so the second panic was produced with KSM
    >> disabled from boot.
    >> echo 0> /sys/kernel/mm/ksm/run
    >> If you still think that compiling ksm out of the kernel will prevent
    >> it then I'm willing to give it a go.
    > Ok, from looking at the code, when KSM inits, it starts the ksm kernel
    > thread and it looks like your oops comes from the function that is run
    > in the kernel thread - ksm_scan_thread.
    > So even if you disable it from sysfs, it runs at least once.

    Just to confirm, I recompiled without KSM enabled and I've been
    unable to reproduce the bug, so it looks like you were on the money.

    I've moved back to as 2.6.39 has a painful SCSI bug that panics
    about 75% of boots, and the reboot cycle required to get luck my way
    into a working kernel is just too much hassle.

    It would appear that XP zero's its memory space on bootup, so there
    would be lots of pages to merge with a couple of relatively freshly
    booted XP machines running.


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      Last update: 2011-05-31 16:27    [W:0.027 / U:16.600 seconds]
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