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vhost-user: disable chardev handlers on close
author
Paolo Bonzini
<pbonzini@redhat.com>
Wed, 29 Jun 2016 13:15:33 +0000
(15:15 +0200)
committer
Paolo Bonzini
<pbonzini@redhat.com>
Wed, 29 Jun 2016 14:49:40 +0000
(16:49 +0200)
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>
net/vhost-user.c
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diff --git
a/net/vhost-user.c
b/net/vhost-user.c
index
636899a
..
92f4cfd
100644
(file)
--- 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);
}