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| author | Josef Bacik <josef@redhat.com> | 2011-07-13 15:03:50 +0000 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2011-08-01 14:30:45 -0400 |
| commit | b783e62d9620445d1ca3de76badf0468cdd329ba (patch) | |
| tree | a97b81f62f0b431a4c3e5c4f6346ca890e535cb6 /fs | |
| parent | bf5f32ecb6caac52b4d1c083251b3dd4f40a0b7a (diff) | |
| download | lwn-b783e62d9620445d1ca3de76badf0468cdd329ba.tar.gz lwn-b783e62d9620445d1ca3de76badf0468cdd329ba.zip | |
Btrfs: don't print the leaf if we had an error
In __btrfs_free_extent we will print the leaf if we fail to find the extent we
wanted, but the problem is if we get an error we won't have a leaf so often this
leads to a NULL pointer dereference and we lose the error that actually
occurred. So only print the leaf if ret > 0, which means we didn't find the
item we were looking for but we didn't error either. This way the error is
preserved.
Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/extent-tree.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index b172b7fa4889..66bac226944e 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -4462,7 +4462,9 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans, printk(KERN_ERR "umm, got %d back from search" ", was looking for %llu\n", ret, (unsigned long long)bytenr); - btrfs_print_leaf(extent_root, path->nodes[0]); + if (ret > 0) + btrfs_print_leaf(extent_root, + path->nodes[0]); } BUG_ON(ret); extent_slot = path->slots[0]; |