diff --git a/net/core/dev_ioctl.c b/net/core/dev_ioctl.c
index ad54b12d4b4c..8bb71a10dba0 100644
--- a/net/core/dev_ioctl.c
+++ b/net/core/dev_ioctl.c
@@ -443,6 +443,9 @@ static int generic_hwtstamp_ioctl_lower(struct net_device *dev, int cmd,
 	struct ifreq ifrr;
 	int err;
 
+	if (!kernel_cfg->ifr)
+		return -EINVAL;
+
 	strscpy_pad(ifrr.ifr_name, dev->name, IFNAMSIZ);
 	ifrr.ifr_ifru = kernel_cfg->ifr->ifr_ifru;