From 2423fdfb96e3f9ff3baeb6c4c78d74145547891d Mon Sep 17 00:00:00 2001
From: Jiri Slaby <jslaby@suse.cz>
Date: Wed, 6 Jan 2010 16:57:22 +0000
Subject: [PATCH] Btrfs, fix memory leaks in error paths
Stanse found 2 memory leaks in relocate_block_group and
__btrfs_map_block. cluster and multi are not freed/assigned on all
paths. Fix that.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: linux-btrfs@vger.kernel.org
Signed-off-by: Chris Mason <chris.mason@oracle.com>
---
fs/btrfs/relocation.c | 4 +++-
fs/btrfs/volumes.c | 4 +++-
2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index a9728680eca8e..ed3e4a2ec2c83 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -3281,8 +3281,10 @@ static noinline_for_stack int relocate_block_group(struct reloc_control *rc)
return -ENOMEM;
path = btrfs_alloc_path();
- if (!path)
+ if (!path) {
+ kfree(cluster);
return -ENOMEM;
+ }
rc->extents_found = 0;
rc->extents_skipped = 0;
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 198cff28766d4..220dad5db017f 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -2649,8 +2649,10 @@ static int __btrfs_map_block(struct btrfs_mapping_tree *map_tree, int rw,
em = lookup_extent_mapping(em_tree, logical, *length);
read_unlock(&em_tree->lock);
- if (!em && unplug_page)
+ if (!em && unplug_page) {
+ kfree(multi);
return 0;
+ }
if (!em) {
printk(KERN_CRIT "unable to find logical %llu len %llu\n",
--
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