[PATCH 5.15 161/177] fuse: annotate lock in fuse_reverse_inval_entry()

Greg Kroah-Hartman
2021-12-20T15:18:54Z

From: Miklos Szeredi <mszeredi@redhat.com>

commit bda9a71980e083699a0360963c0135657b73f47a upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/fuse/dir.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -1079,7 +1079,7 @@ int fuse_reverse_inval_entry(struct fuse
if (!parent)
return -ENOENT;

- inode_lock(parent);
+ inode_lock_nested(parent, I_MUTEX_PARENT);
if (!S_ISDIR(parent->i_mode))
goto unlock;