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
--vmlinux=/usr/src/linux-2.6.17-rc4-mm1/vmlinux
...
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}
<ffffffff802bc559>{dcookie_unregister+345}
<ffffffff803bbe7a>{event_buffer_release+26}
<ffffffff8027cee2>{__fput+98} <ffffffff80279ecd>{filp_close+93}
<ffffffff8023003e>{put_files_struct+110}
<ffffffff8023143a>{do_exit+650}
<ffffffff802f58f1>{__up_write+33}
<ffffffff80231bb8>{do_group_exit+200}
<ffffffff802097ce>{system_call+126}
# 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.
Eric
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
