]> git.baikalelectronics.ru Git - kernel.git/commit
percpu_counter: fix CPU unplug race in percpu_counter_destroy()
authorEric Dumazet <dada1@cosmosbay.com>
Tue, 9 Dec 2008 21:14:11 +0000 (13:14 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 10 Dec 2008 16:01:52 +0000 (08:01 -0800)
commitc823be0282660387c820294ce3d6fe8b45efee8d
treecc1b4d38e5ebd88c25b2bcee684c9e882be9a2ac
parent2a26d56f018f67af0cd0a0fe6d483da5c74fc575
percpu_counter: fix CPU unplug race in percpu_counter_destroy()

We should first delete the counter from percpu_counters list
before freeing memory, or a percpu_counter_hotcpu_callback()
could dereference a NULL pointer.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
lib/percpu_counter.c