From b777d279ff31979add57e8a3f810bceb7ef0cfb7 Mon Sep 17 00:00:00 2001 From: Filipe Manana Date: Mon, 3 Jul 2023 18:15:30 +0100 Subject: [PATCH] btrfs: fix double iput() on inode after an error during orphan cleanup At btrfs_orphan_cleanup(), if we were able to find the inode, we do an iput() on the inode, then if btrfs_drop_verity_items() succeeds and then either btrfs_start_transaction() or btrfs_del_orphan_item() fail, we do another iput() in the respective error paths, resulting in an extra iput() on the inode. Fix this by setting inode to NULL after the first iput(), as iput() ignores a NULL inode pointer argument. Fixes: a13bb2c03848 ("btrfs: add missing iputs on orphan cleanup failure") CC: stable@vger.kernel.org # 6.4 Reviewed-by: Boris Burkov Signed-off-by: Filipe Manana Signed-off-by: David Sterba --- fs/btrfs/inode.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index dbbb672..d919318 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -3728,6 +3728,7 @@ int btrfs_orphan_cleanup(struct btrfs_root *root) if (!ret) { ret = btrfs_drop_verity_items(BTRFS_I(inode)); iput(inode); + inode = NULL; if (ret) goto out; } -- 2.7.4