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fs/ntfs3: Fix possible deadlock in mi_read

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[ 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>
This commit is contained in:
Konstantin Komarov 2024-08-28 11:55:53 +03:00 • committed by Greg Kroah-Hartman
parent e91fbb21f2
commit 34e3220efd
1 changed files with 1 additions and 1 deletions
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2
fs/ntfs3/namei.c
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@ -81,7 +81,7 @@ 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);
}