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authorJosef Bacik <jbacik@fb.com>2016-09-02 15:40:06 -0400
committerDavid Sterba <dsterba@suse.com>2016-09-26 17:59:49 +0200
commit9c8e63db1de98c5cc3c6fb32d11b5cf55f228601 (patch)
tree8cd29cd632056a73ebc7bd4212662f6600e830b2 /fs
parent8436ea91a1c4fd8ed57ff0c0ca482ee3dbe744c7 (diff)
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>
Diffstat (limited to 'fs')
-rw-r--r--fs/btrfs/file.c41
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],