5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Konstantin Komarov almaz.alexandrovich@paragon-software.com
[ Upstream commit 03b097099eef255fbf85ea6a786ae3c91b11f041 ]
Mutex lock with another subclass used in ni_lock_dir().
Reported-by: syzbot+bc7ca0ae4591cb2550f9@syzkaller.appspotmail.com Signed-off-by: Konstantin Komarov almaz.alexandrovich@paragon-software.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/ntfs3/namei.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/ntfs3/namei.c b/fs/ntfs3/namei.c index bff1934e044e5..c1bce9d656cff 100644 --- a/fs/ntfs3/namei.c +++ b/fs/ntfs3/namei.c @@ -79,7 +79,7 @@ static struct dentry *ntfs_lookup(struct inode *dir, struct dentry *dentry, if (err < 0) inode = ERR_PTR(err); else { - ni_lock(ni); + ni_lock_dir(ni); inode = dir_search_u(dir, uni, NULL); ni_unlock(ni); }