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btrfs: remove BUG_ON() in find_parent_nodes()

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[ Upstream commit fcba0120ed ]

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>
This commit is contained in:
Josef Bacik 2021-11-05 16:45:34 -04:00 committed by Greg Kroah-Hartman
parent ba72fa2cb2
commit 7d4f4075e7
1 changed files with 6 additions and 1 deletions
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7
fs/btrfs/backref.c
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@ -1208,7 +1208,12 @@ static int find_parent_nodes(struct btrfs_trans_handle *trans,
ret = btrfs_search_slot(trans, 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) &&