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Commit fa4d683a authored by Wei Yongjun's avatar Wei Yongjun Committed by Alasdair G Kergon
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dm cache: fix error return code in cache_create 



Return -ENOMEM if memory allocation fails in cache_create
instead of 0 (to avoid NULL pointer dereference).

Signed-off-by: default avatarWei Yongjun <yongjun_wei@trendmicro.com.cn>
Cc: stable@vger.kernel.org
Signed-off-by: default avatarAlasdair G Kergon <agk@redhat.com>
parent d793e684

drivers/md/dm-cache-target.c

+1 −0
Original line number Diff line number Diff line
@@ -1971,6 +1971,7 @@ static int cache_create(struct cache_args *ca, struct cache **result) 
	atomic_set(&cache->nr_migrations, 0);

	init_waitqueue_head(&cache->migration_wait);



	r = -ENOMEM;

	cache->nr_dirty = 0;

	cache->dirty_bitset = alloc_bitset(from_cblock(cache->cache_size));

	if (!cache->dirty_bitset) {