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| author | Tsutomu Itoh <t-itoh@jp.fujitsu.com> | 2011-03-24 06:33:21 +0000 |
|---|---|---|
| committer | root <Chris Mason chris.mason@oracle.com> | 2011-03-28 05:37:37 -0400 |
| commit | 97d9a8a420444eb5b5c071d4b3b9c4100a7ae015 (patch) | |
| tree | 4ed3e77541ebcc4885c4a10630e2f6bf94d3cef2 /fs/btrfs/ctree.c | |
| parent | 7e75bf3ff3a716d7b21d8fb43bf823115801c1e9 (diff) | |
Btrfs: check return value of read_tree_block()
This patch is checking return value of read_tree_block(),
and if it is NULL, error processing.
Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/ctree.c')
| -rw-r--r-- | fs/btrfs/ctree.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index 4edcbe915736..84d7ca1fe0ba 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -682,6 +682,8 @@ int btrfs_realloc_node(struct btrfs_trans_handle *trans, if (!cur) { cur = read_tree_block(root, blocknr, blocksize, gen); + if (!cur) + return -EIO; } else if (!uptodate) { btrfs_read_buffer(cur, gen); } @@ -4087,6 +4089,7 @@ find_next_key: } btrfs_set_path_blocking(path); cur = read_node_slot(root, cur, slot); + BUG_ON(!cur); btrfs_tree_lock(cur); |