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Commit fa4d683af3693863bec761e2761a07e4c1351f86

Authored by Wei Yongjun
Committed by Alasdair G Kergon
1 parent d793e68427
Exists in smarc-l5.0.0_1.0.0-ga and in 5 other branches imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga

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: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Cc: stable@vger.kernel.org
Signed-off-by: Alasdair G Kergon <agk@redhat.com>

Showing 1 changed file with 1 additions and 0 deletions Side-by-side Diff

drivers/md/dm-cache-target.c
Diff comments   View file @ fa4d683
... ... @@ -1971,6 +1971,7 @@
1971 1971 atomic_set(&cache->nr_migrations, 0);
1972 1972 init_waitqueue_head(&cache->migration_wait);
1973 1973  
  1974 + r = -ENOMEM;
1974 1975 cache->nr_dirty = 0;
1975 1976 cache->dirty_bitset = alloc_bitset(from_cblock(cache->cache_size));
1976 1977 if (!cache->dirty_bitset) {