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From: Xin LI <delphij@FreeBSD.org>
Date: Tue, 8 Dec 2009 21:46:30 +0000 (UTC)
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Subject: svn commit: r200276 - stable/7/sys/geom/virstor
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Author: delphij
Date: Tue Dec  8 21:46:30 2009
New Revision: 200276
URL: http://svn.freebsd.org/changeset/base/200276

Log:
  MFC r180120:
  
  Avoid NULL deference.

Modified:
  stable/7/sys/geom/virstor/g_virstor.c
Directory Properties:
  stable/7/sys/   (props changed)
  stable/7/sys/contrib/pf/   (props changed)

Modified: stable/7/sys/geom/virstor/g_virstor.c
==============================================================================
--- stable/7/sys/geom/virstor/g_virstor.c	Tue Dec  8 21:42:04 2009	(r200275)
+++ stable/7/sys/geom/virstor/g_virstor.c	Tue Dec  8 21:46:30 2009	(r200276)
@@ -225,6 +225,11 @@ virstor_ctl_stop(struct gctl_req *req, s
 
 		sprintf(param, "arg%d", i);
 		name = gctl_get_asciiparam(req, param);
+		if (name == NULL) {
+			gctl_error(req, "No 'arg%d' argument", i);
+			g_topology_unlock();
+			return;
+		}
 		sc = virstor_find_geom(cp, name);
 		LOG_MSG(LVL_INFO, "Stopping %s by the userland command",
 		    sc->geom->name);