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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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