linux-kernel - [PATCH 4.9 21/31] fuse: annotate lock in fuse_reverse_inval

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20211220143020.655635941@linuxfoundation.org>
Date:   Mon, 20 Dec 2021 15:34:21 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Miklos Szeredi <mszeredi@...hat.com>,
        syzbot+9f747458f5990eaa8d43@...kaller.appspotmail.com
Subject: [PATCH 4.9 21/31] fuse: annotate lock in fuse_reverse_inval_entry()

From: Miklos Szeredi <mszeredi@...hat.com>

commit bda9a71980e083699a0360963c0135657b73f47a upstream.

Add missing inode lock annotatation; found by syzbot.

Reported-and-tested-by: syzbot+9f747458f5990eaa8d43@...kaller.appspotmail.com
Signed-off-by: Miklos Szeredi <mszeredi@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 fs/fuse/dir.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -973,7 +973,7 @@ int fuse_reverse_inval_entry(struct supe
 	if (!parent)
 		return -ENOENT;
 
-	inode_lock(parent);
+	inode_lock_nested(parent, I_MUTEX_PARENT);
 	if (!S_ISDIR(parent->i_mode))
 		goto unlock;