vhost: check for vhost_ops before using.
commitca10203cde7cf37623e0e77da1696ba1fbce5d84
authorIlya Maximets <i.maximets@samsung.com>
Wed, 3 Aug 2016 05:22:49 +0000 (3 08:22 +0300)
committerMichael S. Tsirkin <mst@redhat.com>
Wed, 10 Aug 2016 14:47:29 +0000 (10 17:47 +0300)
tree24f87d97a7b5525d6be64260b0e605a7c1d94bb2
parent53279c76cf071fed07a336948d37c72e3613e0b7
vhost: check for vhost_ops before using.

'vhost_set_vring_enable()' tries to call function using pointer to
'vhost_ops' which can be already zeroized in 'vhost_dev_cleanup()'
while vhost disconnection.

Fix that by checking 'vhost_ops' before using. This fixes QEMU crash
on calling 'ethtool -L eth0 combined 2' if vhost disconnected.

Signed-off-by: Ilya Maximets <i.maximets@samsung.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
hw/net/vhost_net.c