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authorYuri Benditovich <yuri.benditovich@daynix.com>2016-11-01 00:01:17 +0200
committerJason Wang <jasowang@redhat.com>2016-11-15 15:36:21 +0800
commit68b5f314a269979b4f2014eb22873732d4745bcc (patch)
tree7e2b2cdc98ff1d0e27f4348044112a70cf579acd /hw
parent682df581c65ed2c1b9e77093e332214ecaa1ee93 (diff)
downloadfocaccia-qemu-68b5f314a269979b4f2014eb22873732d4745bcc.tar.gz
focaccia-qemu-68b5f314a269979b4f2014eb22873732d4745bcc.zip
net: skip virtio-net config of deleted nic's peers
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>
Diffstat (limited to 'hw')
-rw-r--r--hw/net/virtio-net.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
index 06bfe4bcc9..77a4fae399 100644
--- a/hw/net/virtio-net.c
+++ b/hw/net/virtio-net.c
@@ -508,6 +508,10 @@ static void virtio_net_set_queues(VirtIONet *n)
     int i;
     int r;
 
+    if (n->nic->peer_deleted) {
+        return;
+    }
+
     for (i = 0; i < n->max_queues; i++) {
         if (i < n->curr_queues) {
             r = peer_attach(n, i);