[PATHv11 17/43] net: sandbox: fix NULL pointer derefences

[Maxim Uvarov]

Add additional checks for NULL pointers.

Signed-off-by: Maxim Uvarov <maxim.uva...@linaro.org>
---
 drivers/net/sandbox.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/sandbox.c b/drivers/net/sandbox.c
index 13022addb6..75d32db3a9 100644
--- a/drivers/net/sandbox.c
+++ b/drivers/net/sandbox.c
@@ -65,6 +65,9 @@ int sandbox_eth_arp_req_to_reply(struct udevice *dev, void 
*packet,
        struct ethernet_hdr *eth_recv;
        struct arp_hdr *arp_recv;
 
+       if (!priv)
+               return -EAGAIN;
+
        if (ntohs(eth->et_protlen) != PROT_ARP)
                return -EAGAIN;
 
@@ -82,6 +85,8 @@ int sandbox_eth_arp_req_to_reply(struct udevice *dev, void 
*packet,
 
        /* Formulate a fake response */
        eth_recv = (void *)priv->recv_packet_buffer[priv->recv_packets];
+       if (!eth_recv)
+               return -EAGAIN;
        memcpy(eth_recv->et_dest, eth->et_src, ARP_HLEN);
        memcpy(eth_recv->et_src, priv->fake_host_hwaddr, ARP_HLEN);
        eth_recv->et_protlen = htons(PROT_ARP);
-- 
2.30.2