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[Qemu-devel] [PULL 32/35] vhost-user: disable chardev handlers on close
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PULL 32/35] vhost-user: disable chardev handlers on close |
Date: |
Wed, 29 Jun 2016 17:24:00 +0200 |
This otherwise causes a use-after-free if network backend cleanup
is performed before character device cleanup.
Cc: Marc-André Lureau <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
net/vhost-user.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/net/vhost-user.c b/net/vhost-user.c
index 636899a..92f4cfd 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);
}
--
1.8.3.1