svn commit: r326715 - stable/11/sys/geom/mirror

[Mark Johnston]

Author: markj
Date: Fri Dec  8 20:04:10 2017
New Revision: 326715
URL: https://svnweb.freebsd.org/changeset/base/326715

Log:
  MFC r325044:
  Fix a lock leak in g_mirror_destroy().

Modified:
  stable/11/sys/geom/mirror/g_mirror.c
Directory Properties:
  stable/11/   (props changed)

Modified: stable/11/sys/geom/mirror/g_mirror.c
==============================================================================
--- stable/11/sys/geom/mirror/g_mirror.c	Fri Dec  8 19:57:26 2017	(r326714)
+++ stable/11/sys/geom/mirror/g_mirror.c	Fri Dec  8 20:04:10 2017	(r326715)
@@ -3088,8 +3088,10 @@ g_mirror_destroy(struct g_mirror_softc *sc, int how)
 		}
 	}
 
-	if ((sc->sc_flags & G_MIRROR_DEVICE_FLAG_DESTROY) != 0)
+	if ((sc->sc_flags & G_MIRROR_DEVICE_FLAG_DESTROY) != 0) {
+		sx_xunlock(&sc->sc_lock);
 		return (0);
+	}
 	sc->sc_flags |= G_MIRROR_DEVICE_FLAG_DESTROY;
 	sc->sc_flags |= G_MIRROR_DEVICE_FLAG_DRAIN;
 	G_MIRROR_DEBUG(4, "%s: Waking up %p.", __func__, sc);