evie/android_kernel_oneplus_msm8998
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

dm cache: fix error return code in cache_create

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

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Cc: stable@vger.kernel.org
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
This commit is contained in:
Wei Yongjun 2013-05-10 14:37:14 +01:00 • committed by Alasdair G Kergon
parent d793e68427
commit fa4d683af3
1 changed files with 1 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
drivers/md/dm-cache-target.c
View file

@ -1971,6 +1971,7 @@ static int cache_create(struct cache_args *ca, struct cache **result)
atomic_set(&cache->nr_migrations, 0); atomic_set(&cache->nr_migrations, 0);
init_waitqueue_head(&cache->migration_wait); init_waitqueue_head(&cache->migration_wait);
r = -ENOMEM;
cache->nr_dirty = 0; cache->nr_dirty = 0;
cache->dirty_bitset = alloc_bitset(from_cblock(cache->cache_size)); cache->dirty_bitset = alloc_bitset(from_cblock(cache->cache_size));
if (!cache->dirty_bitset) { if (!cache->dirty_bitset) {