Messages in this thread | | | Date | Tue, 17 Jan 2012 10:04:38 -0600 (CST) | From | Christoph Lameter <> | Subject | Re: Hung task when calling clone() due to netfilter/slab |
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On Tue, 17 Jan 2012, Eric Dumazet wrote:
> Thanks ! > > Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
That may not be the end of it. Slub also calls sysfs from sysfs_add_alias while holding slub_lock.
If sysfs allows user space stuff to run then you cannot really hold any locks. How is one supposed to sync adding pointers to sysfs structures in subsystems? Drop all locks and then recheck the memory structures after the sysfs function returns? Awkward.
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