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btrfs: handle root deletion lookup error in btrfs_del_root()

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We're deleting a root and looking it up by key does not succeed, this
is an inconsistent state and we can't do anything. All callers handle
errors and abort a transaction.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2024-01-23 23:19:19 +01:00
parent 97ec332068
commit 0fe29838ba
1 changed files with 5 additions and 2 deletions
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7
fs/btrfs/root-tree.c
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@ -322,8 +322,11 @@ int btrfs_del_root(struct btrfs_trans_handle *trans,
ret = btrfs_search_slot(trans, root, key, path, -1, 1);
if (ret < 0)
goto out;
BUG_ON(ret != 0);
if (ret != 0) {
/* The root must exist but we did not find it by the key. */
ret = -EUCLEAN;
goto out;
}
ret = btrfs_del_item(trans, root, path);
out: