diff mbox series

net: Check if nc is NULL in qemu_get_vnet_hdr_len()

Message ID 20240817-net-v1-1-699b5591ad3b@daynix.com
State New
Headers show
Series net: Check if nc is NULL in qemu_get_vnet_hdr_len() | expand

Commit Message

Akihiko Odaki Aug. 17, 2024, 7 a.m. UTC 
A netdev may not have a peer specified, resulting in NULL. We should
make it behave like /dev/null in such a case instead of letting it
cause segmentatin fault.

Fixes: 4b52d63249a5 ("tap: Remove qemu_using_vnet_hdr()")
Reported-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
---
 net/net.c | 4 ++++
 1 file changed, 4 insertions(+)


---
base-commit: 31669121a01a14732f57c49400bc239cf9fd505f
change-id: 20240817-net-dc461895a295

Best regards,
diff mbox series

Patch

diff --git a/net/net.c b/net/net.c
index 6938da05e077..4c21d91f9450 100644
--- a/net/net.c
+++ b/net/net.c
@@ -542,6 +542,10 @@  void qemu_set_offload(NetClientState *nc, int csum, int tso4, int tso6,
 
 int qemu_get_vnet_hdr_len(NetClientState *nc)
 {
+    if (!nc) {
+        return 0;
+    }
+
     return nc->vnet_hdr_len;
 }