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Btrfs: uninitialized data is check_path_shared()

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refs can be used with uninitialized data if btrfs_lookup_extent_info()
fails on the first pass through the loop.  In the original code if that
happens then check_path_shared() probably returns 1, this patch
changes it to return 1 for safety.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Dan Carpenter 2010-06-01 08:23:11 +00:00 • committed by Chris Mason
parent 8360977972
commit 0e4dcbef1c
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/inode.c
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@ -2673,7 +2673,7 @@ static int check_path_shared(struct btrfs_root *root,
struct extent_buffer *eb; struct extent_buffer *eb;
int level; int level;
int ret; int ret;
u64 refs; u64 refs = 1;
for (level = 0; level < BTRFS_MAX_LEVEL; level++) { for (level = 0; level < BTRFS_MAX_LEVEL; level++) {
if (!path->nodes[level]) if (!path->nodes[level])