From: Miao Xie <miaox@xxxxxxxxxxxxxx>
if passing NULL to btrfs_free_path(),oops will happen. so we must check the
pointer passed to it.
Signed-off-by: Miao Xie <miaox@xxxxxxxxxxxxxx>
---
fs/btrfs/relocation.c | 6 ++++--
1 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 0b23942..6737803 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -816,8 +816,10 @@ next:
list_add_tail(&edge->list[UPPER], &list);
}
out:
- btrfs_free_path(path1);
- btrfs_free_path(path2);
+ if (path1)
+ btrfs_free_path(path1);
+ if (path2)
+ btrfs_free_path(path2);
if (err) {
INIT_LIST_HEAD(&list);
upper = node;
--
1.6.5.2
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