[dm-devel] [PATCH] dm-lc.c: fix for a potential NULL pointer dereference
Kumar Amit Mehta
gmate.amit at gmail.com
Wed Jul 31 12:09:28 UTC 2013
Memory allocation may fail, hence add a check before dereferencing
the pointer.
Signed-off-by: Kumar Amit Mehta <gmate.amit at gmail.com>
---
Driver/dm-lc.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/Driver/dm-lc.c b/Driver/dm-lc.c
index 4a65042..e00fb27 100644
--- a/Driver/dm-lc.c
+++ b/Driver/dm-lc.c
@@ -2671,6 +2671,8 @@ static int lc_mgr_message(struct dm_target *ti, unsigned int argc, char **argv)
*/
if (!strcasecmp(cmd, "resume_cache")) {
struct lc_cache *cache = kzalloc(sizeof(*cache), GFP_KERNEL);
+ if (!cache)
+ return -ENOMEM;
struct dm_dev *dev;
if (dm_get_device(ti, argv[1], dm_table_get_mode(ti->table),
--
1.8.3.1
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