From: zhanghailiang <zhang.zhanghaili...@huawei.com>
After commit 338d3f, we support 'status' property for filter object.
The segfault can be triggered by starting qemu with 'status=off' property
for filter, when the s->incoming_queue is NULL, we reference it directly
in qemu_net_queue_flush() which was called in status_changed() callback
function.
We shouldn't trigger status_changed() before the filter was initialized,
We can check the value of 'nf->netdev' to confirm if the filter is
initialized or not, so let's check its value before calling
status_changed().
Signed-off-by: zhanghailiang <zhang.zhanghaili...@huawei.com>
Signed-off-by: Jason Wang <jasow...@redhat.com>
---
net/filter.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/filter.c b/net/filter.c
index 1c4fc5a..8ac79f3 100644
--- a/net/filter.c
+++ b/net/filter.c
@@ -164,7 +164,7 @@ static void netfilter_set_status(Object *obj, const char
*str, Error **errp)
return;
}
nf->on = !nf->on;
- if (nfc->status_changed) {
+ if (nf->netdev && nfc->status_changed) {
nfc->status_changed(nf, errp);
}
}
--
2.5.0
