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authorTsutomu Itoh <t-itoh@jp.fujitsu.com>2011-03-24 06:33:21 +0000
committerroot <Chris Mason chris.mason@oracle.com>2011-03-28 05:37:37 -0400
commit97d9a8a420444eb5b5c071d4b3b9c4100a7ae015 (patch)
tree4ed3e77541ebcc4885c4a10630e2f6bf94d3cef2 /fs/btrfs/ctree.c
parent7e75bf3ff3a716d7b21d8fb43bf823115801c1e9 (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.c3
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);