From: bluhm <bluhm@openbsd.org>
Date: Thu, 23 Dec 2021 10:09:16 +0000 (+0000)
Subject: Disk lock was held when returning to userland.  Add a missing unlock
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=41a45098bac2247db629acb1612a87f4586172eb;p=openbsd

Disk lock was held when returning to userland.  Add a missing unlock
in vnd ioctl error path.
Reported-by: syzbot+6dde3fda33074a256318@syzkaller.appspotmail.com
OK jsg@ anton@
---

diff --git a/sys/dev/vnd.c b/sys/dev/vnd.c
index 53c12b2fdad..bbd124d8325 100644
--- a/sys/dev/vnd.c
+++ b/sys/dev/vnd.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: vnd.c,v 1.176 2021/12/21 06:12:03 anton Exp $	*/
+/*	$OpenBSD: vnd.c,v 1.177 2021/12/23 10:09:16 bluhm Exp $	*/
 /*	$NetBSD: vnd.c,v 1.26 1996/03/30 23:06:11 christos Exp $	*/
 
 /*
@@ -498,6 +498,7 @@ fail:
 		if ((error = disk_lock(&sc->sc_dk)) != 0)
 			goto fail;
 		if (sc->sc_flags & VNF_INITED) {
+			disk_unlock(&sc->sc_dk);
 			error = EBUSY;
 			goto fail;
 		}