zs_destroy_pool()->destroy_handle_cache() invoked from zs_create_pool() can pass a NULL ->handle_cachep pointer to kmem_cache_destroy(), which will dereference it.
Signed-off-by: Sergey Senozhatsky <[email protected]> --- mm/zsmalloc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c index 33d5126..c766240 100644 --- a/mm/zsmalloc.c +++ b/mm/zsmalloc.c @@ -285,7 +285,8 @@ static int create_handle_cache(struct zs_pool *pool) static void destroy_handle_cache(struct zs_pool *pool) { - kmem_cache_destroy(pool->handle_cachep); + if (pool->handle_cachep) + kmem_cache_destroy(pool->handle_cachep); } static unsigned long alloc_handle(struct zs_pool *pool) -- 2.4.2.387.gf86f31a -- 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/
