diff options
| author | Josef Bacik <jbacik@fb.com> | 2016-09-02 15:40:06 -0400 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2016-09-26 17:59:49 +0200 |
| commit | 9c8e63db1de98c5cc3c6fb32d11b5cf55f228601 (patch) | |
| tree | 8cd29cd632056a73ebc7bd4212662f6600e830b2 | |
| parent | 8436ea91a1c4fd8ed57ff0c0ca482ee3dbe744c7 (diff) | |
| download | linux-9c8e63db1de98c5cc3c6fb32d11b5cf55f228601.tar.bz2 | |
Btrfs: kill BUG_ON()'s in btrfs_mark_extent_written
No reason to bug on in here, fs corruption could easily cause these things to
happen.
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
| -rw-r--r-- | fs/btrfs/file.c | 41 |
1 files changed, 33 insertions, 8 deletions
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index f1f1ae6ff08b..72a180d3503e 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -1110,13 +1110,25 @@ again: leaf = path->nodes[0]; btrfs_item_key_to_cpu(leaf, &key, path->slots[0]); - BUG_ON(key.objectid != ino || key.type != BTRFS_EXTENT_DATA_KEY); + if (key.objectid != ino || + key.type != BTRFS_EXTENT_DATA_KEY) { + ret = -EINVAL; + btrfs_abort_transaction(trans, ret); + goto out; + } fi = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_file_extent_item); - BUG_ON(btrfs_file_extent_type(leaf, fi) != - BTRFS_FILE_EXTENT_PREALLOC); + if (btrfs_file_extent_type(leaf, fi) != BTRFS_FILE_EXTENT_PREALLOC) { + ret = -EINVAL; + btrfs_abort_transaction(trans, ret); + goto out; + } extent_end = key.offset + btrfs_file_extent_num_bytes(leaf, fi); - BUG_ON(key.offset > start || extent_end < end); + if (key.offset > start || extent_end < end) { + ret = -EINVAL; + btrfs_abort_transaction(trans, ret); + goto out; + } bytenr = btrfs_file_extent_disk_bytenr(leaf, fi); num_bytes = btrfs_file_extent_disk_num_bytes(leaf, fi); @@ -1213,12 +1225,19 @@ again: ret = btrfs_inc_extent_ref(trans, root, bytenr, num_bytes, 0, root->root_key.objectid, ino, orig_offset); - BUG_ON(ret); /* -ENOMEM */ + if (ret) { + btrfs_abort_transaction(trans, ret); + goto out; + } if (split == start) { key.offset = start; } else { - BUG_ON(start != key.offset); + if (start != key.offset) { + ret = -EINVAL; + btrfs_abort_transaction(trans, ret); + goto out; + } path->slots[0]--; extent_end = end; } @@ -1240,7 +1259,10 @@ again: ret = btrfs_free_extent(trans, root, bytenr, num_bytes, 0, root->root_key.objectid, ino, orig_offset); - BUG_ON(ret); /* -ENOMEM */ + if (ret) { + btrfs_abort_transaction(trans, ret); + goto out; + } } other_start = 0; other_end = start; @@ -1257,7 +1279,10 @@ again: ret = btrfs_free_extent(trans, root, bytenr, num_bytes, 0, root->root_key.objectid, ino, orig_offset); - BUG_ON(ret); /* -ENOMEM */ + if (ret) { + btrfs_abort_transaction(trans, ret); + goto out; + } } if (del_nr == 0) { fi = btrfs_item_ptr(leaf, path->slots[0], |