From: Paolo Bonzini <pbonzini@redhat.com>
Date: Wed, 29 Jun 2016 13:15:33 +0000 (+0200)
Subject: vhost-user: disable chardev handlers on close
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=25f0d2aa5e3d21caa1bc622b21368cc2e383f02c;p=qmiga%2Fqemu.git

vhost-user: disable chardev handlers on close

This otherwise causes a use-after-free if network backend cleanup
is performed before character device cleanup.

Cc: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---

diff --git a/net/vhost-user.c b/net/vhost-user.c
index 636899a877..92f4cfd1b1 100644
--- a/net/vhost-user.c
+++ b/net/vhost-user.c
@@ -151,6 +151,11 @@ static void vhost_user_cleanup(NetClientState *nc)
         vhost_net_cleanup(s->vhost_net);
         s->vhost_net = NULL;
     }
+    if (s->chr) {
+        qemu_chr_add_handlers(s->chr, NULL, NULL, NULL, NULL);
+        qemu_chr_fe_release(s->chr);
+        s->chr = NULL;
+    }
 
     qemu_purge_queued_packets(nc);
 }