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net: skip virtio-net config of deleted nic's peers

Browse source 
https://bugzilla.redhat.com/show_bug.cgi?id=1373816
qemu core dump happens during repetitive unpug-plug
with multiple queues and Windows RSS-capable guest.
If back-end delete requested during virtio-net device
initialization, driver still can try configure the device
for multiple queues. The virtio-net device is expected
to be removed as soon as the initialization is done.

Signed-off-by: Yuri Benditovich <yuri.benditovich@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Yuri Benditovich 2016-11-01 00:01:17 +02:00 • committed by Jason Wang
parent 682df581c6
commit 68b5f314a2
1 changed files with 4 additions and 0 deletions
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4
hw/net/virtio-net.c
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@ -508,6 +508,10 @@ static void virtio_net_set_queues(VirtIONet *n)
int i; int i;
int r; int r;
if (n->nic->peer_deleted) {
return;
}
for (i = 0; i < n->max_queues; i++) { for (i = 0; i < n->max_queues; i++) {
if (i < n->curr_queues) { if (i < n->curr_queues) {
r = peer_attach(n, i); r = peer_attach(n, i);