From: Ilya Dryomov <idryomov@gmail.com>
Date: Fri, 4 Nov 2011 13:41:02 +0000 (-0400)
Subject: Btrfs: fix a potential btrfs_bio leak on scrub fixups
X-Git-Tag: v3.12-rc1~4220^2~56
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=56d2a48f81a1bde827c625b90221fade72fe9c61;p=kernel%2Fkernel-generic.git

Btrfs: fix a potential btrfs_bio leak on scrub fixups

In case we were able to map less than we wanted (length < PAGE_SIZE
clause is true) btrfs_bio is still allocated and we have to free it.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
---

diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index 562dad1..ed11d38 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -655,6 +655,7 @@ static void scrub_fixup(struct scrub_bio *sbio, int ix)
 		       "scrub_fixup: btrfs_map_block failed us for %llu\n",
 		       (unsigned long long)logical);
 		WARN_ON(1);
+		kfree(bbio);
 		return;
 	}