From 21a2eba44fdbb9866e3c4db90e785eb34907e76f Mon Sep 17 00:00:00 2001
From: Jim Meyering <meyering@redhat.com>
Date: Mon, 14 Dec 2009 14:34:29 +0100
Subject: [PATCH] virsh: avoid double-free

* tools/virsh.c (vshCommandParse): Avoid double-free of "tkdata".
Set it to NULL immediately after free in the (cmd == NULL) case,
just as in the other case, in case the final free(tkdata) is
triggered by a syntax error.
---
 tools/virsh.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/virsh.c b/tools/virsh.c
index 65525d439e..8f96ca865c 100644
--- a/tools/virsh.c
+++ b/tools/virsh.c
@@ -8049,6 +8049,7 @@ vshCommandParse(vshControl *ctl, char *cmdstr)
                     goto syntaxError;   /* ... or ignore this command only? */
                 }
                 free(tkdata);
+                tkdata = NULL;
             } else if (tk == VSH_TK_OPTION) {
                 if (!(opt = vshCmddefGetOption(cmd, tkdata))) {
                     vshError(ctl,