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authorZygo Blaxell <zygo.blaxell@xandros.com>2009-06-16 22:33:57 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-17 02:47:53 (GMT)
commit8e8a2dea0ca91fe2cb7de7ea212124cfe8c82c35 (patch)
tree96d07171a5c95e87c69fc18d4d0e582f90095d4e /lib/genalloc.c
parent69050eee8e08a6234f29fe71a56f8c7c7d4d7186 (diff)
lib/genalloc.c: remove unmatched write_lock() in gen_pool_destroy
There is a call to write_lock() in gen_pool_destroy which is not balanced by any corresponding write_unlock(). This causes problems with preemption because the preemption-disable counter is incremented in the write_lock() call, but never decremented by any call to write_unlock(). This bug is gen_pool_destroy, and one of them is non-x86 arch-specific code. Signed-off-by: Zygo Blaxell <zygo.blaxell@xandros.com> Cc: Jiri Kosina <trivial@kernel.org> Cc: Steve Wise <swise@opengridcomputing.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/genalloc.c')
-rw-r--r--lib/genalloc.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/lib/genalloc.c b/lib/genalloc.c
index f6d276d..eed2bdb 100644
--- a/lib/genalloc.c
+++ b/lib/genalloc.c
@@ -85,7 +85,6 @@ void gen_pool_destroy(struct gen_pool *pool)
int bit, end_bit;
- write_lock(&pool->lock);
list_for_each_safe(_chunk, _next_chunk, &pool->chunks) {
chunk = list_entry(_chunk, struct gen_pool_chunk, next_chunk);
list_del(&chunk->next_chunk);

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