linux-kernel - Re: [syzbot] possible fix (linux-ntfs3)

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Message-ID: <000000000000e48a89062122c319@google.com>
Date: Mon, 02 Sep 2024 06:17:39 -0700
From: syzbot <syzbot+bc7ca0ae4591cb2550f9@...kaller.appspotmail.com>
To: linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] possible fix (linux-ntfs3)

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linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com.

***

Subject: possible fix (linux-ntfs3)
Author: almaz.alexandrovich@...agon-software.com

#syz test: https://github.com/Paragon-Software-Group/linux-ntfs3.git master

diff --git a/fs/ntfs3/namei.c b/fs/ntfs3/namei.c
index fc720ad9c57a..aa7e9d70e32e 100644
--- a/fs/ntfs3/namei.c
+++ b/fs/ntfs3/namei.c
@@ -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);
 		}