Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH AUTOSEL 5.16 192/217] btrfs: remove BUG_ON() in find_parent_nodes() | Date | Mon, 17 Jan 2022 21:19:15 -0500 |
| |
From: Josef Bacik <josef@toxicpanda.com>
[ Upstream commit fcba0120edf88328524a4878d1d6f4ad39f2ec81 ]
We search for an extent entry with .offset = -1, which shouldn't be a thing, but corruption happens. Add an ASSERT() for the developers, return -EUCLEAN for mortals.
Signed-off-by: Josef Bacik <josef@toxicpanda.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> Signed-off-by: Sasha Levin <sashal@kernel.org> --- fs/btrfs/backref.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c index f735b8798ba12..6b4b0f105a572 100644 --- a/fs/btrfs/backref.c +++ b/fs/btrfs/backref.c @@ -1214,7 +1214,12 @@ static int find_parent_nodes(struct btrfs_trans_handle *trans, ret = btrfs_search_slot(NULL, fs_info->extent_root, &key, path, 0, 0); if (ret < 0) goto out; - BUG_ON(ret == 0); + if (ret == 0) { + /* This shouldn't happen, indicates a bug or fs corruption. */ + ASSERT(ret != 0); + ret = -EUCLEAN; + goto out; + } #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS if (trans && likely(trans->type != __TRANS_DUMMY) && -- 2.34.1
| |