From: Miklos Szeredi <mszeredi@redhat.com>
Date: Fri, 22 Oct 2021 17:03:01 +0200
Subject: fuse: annotate lock in fuse_reverse_inval_entry()
Git-commit: bda9a71980e083699a0360963c0135657b73f47a
Patch-mainline: v5.16-rc1
References: bsc#1195795

Add missing inode lock annotatation; found by syzbot.

Reported-and-tested-by: syzbot+9f747458f5990eaa8d43@syzkaller.appspotmail.com
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Acked-by: Luis Henriques <lhenriques@suse.com>

---
 fs/fuse/dir.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index 2798fbe8d001..80a2181b402b 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -1079,7 +1079,7 @@ int fuse_reverse_inval_entry(struct fuse_conn *fc, u64 parent_nodeid,
 	if (!parent)
 		return -ENOENT;
 
-	inode_lock(parent);
+	inode_lock_nested(parent, I_MUTEX_PARENT);
 	if (!S_ISDIR(parent->i_mode))
 		goto unlock;