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    SubjectRe: 2.6.17-rc4-mm1
    Hi Andrew

    It seems latest kernels have a problem in kmem_cache_destroy()

    On a dual opteron machine (NUMA), its quite easy do trigger the bug :
    doing a oprofile session like :

    opcontrol --setup --event=CPU_CLK_UNHALTED:100000
    opcontrol --dump
    opcontrol --deinit <<<-- Triggers the bug

    slab error in kmem_cache_destroy(): cache `dcookie_cache': Can't free
    all objects

    Call Trace: <ffffffff80278aa4>{kmem_cache_destroy+212}
    <ffffffff8027cee2>{__fput+98} <ffffffff80279ecd>{filp_close+93}

    # grep dcookie_cache /proc/slabinfo
    dcookie_cache 0 0 32 101 1 : tunables 120 60
    8 : slabdata 0 0 0

    This problem is annoying, because in the oprofile case, we must reboot
    the machine to be able to start a new profile session.


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      Last update: 2006-05-15 12:12    [W:0.024 / U:0.672 seconds]
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