diff mbox series

mm/zswap: fix potential memory leak

Message ID 1611538365-51811-1-git-send-email-tiantao6@hisilicon.com (mailing list archive)
State New, archived
Headers show
Series mm/zswap: fix potential memory leak | expand

Commit Message

Tian Tao Jan. 25, 2021, 1:32 a.m. UTC 
If entry is NULL, the requested memory tmp should be freed,
otherwise it may cause a memory leak.

Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
---
 mm/zswap.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/mm/zswap.c b/mm/zswap.c
index 42d13dd..8d1381b 100644
--- a/mm/zswap.c
+++ b/mm/zswap.c
@@ -961,6 +961,7 @@  static int zswap_writeback_entry(struct zpool *pool, unsigned long handle)
 		/* entry was invalidated */
 		spin_unlock(&tree->lock);
 		zpool_unmap_handle(pool, handle);
+		kfree(tmp);
 		return 0;
 	}
 	spin_unlock(&tree->lock);