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authorJosef Bacik <josef@redhat.com>2011-01-28 18:44:44 +0000
committerChris Mason <chris.mason@oracle.com>2011-01-28 16:42:34 -0500
commitad0397a7a97f55fd7f70998ec208c5d8b90310ff (patch)
treedbebfe94a571155d4f376e265026c9a1ca1e2f2f /fs/btrfs/file-item.c
parent68a82277b8619e6d0f2738b1d9b160b627e81e92 (diff)
downloadop-kernel-dev-ad0397a7a97f55fd7f70998ec208c5d8b90310ff.zip
op-kernel-dev-ad0397a7a97f55fd7f70998ec208c5d8b90310ff.tar.gz
Btrfs: do error checking in btrfs_del_csums
Got a report of a box panicing because we got a NULL eb in read_extent_buffer. His fs was borked and btrfs_search_path returned EIO, but we don't check for errors so the box paniced. Yes I know this will just make something higher up the stack panic, but that's a problem for future Josef. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/file-item.c')
-rw-r--r--fs/btrfs/file-item.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index d0bc726..4f19a3e 100644
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -550,7 +550,10 @@ int btrfs_del_csums(struct btrfs_trans_handle *trans,
if (path->slots[0] == 0)
goto out;
path->slots[0]--;
+ } else if (ret < 0) {
+ goto out;
}
+
leaf = path->nodes[0];
btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);
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