Avoid smashing the stack when an ICRC error occurs on an IPv6 network.
Signed-off-by: Andrew Boyer <andrew.boyer@xxxxxxxx>
---
drivers/infiniband/sw/rxe/rxe_recv.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/drivers/infiniband/sw/rxe/rxe_recv.c b/drivers/infiniband/sw/rxe/rxe_recv.c
index 46f0628..252b4d6 100644
--- a/drivers/infiniband/sw/rxe/rxe_recv.c
+++ b/drivers/infiniband/sw/rxe/rxe_recv.c
@@ -391,16 +391,15 @@ int rxe_rcv(struct sk_buff *skb)
payload_size(pkt));
calc_icrc = cpu_to_be32(~calc_icrc);
if (unlikely(calc_icrc != pack_icrc)) {
- char saddr[sizeof(struct in6_addr)];
-
if (skb->protocol == htons(ETH_P_IPV6))
- sprintf(saddr, "%pI6", &ipv6_hdr(skb)->saddr);
+ pr_warn_ratelimited("bad ICRC from %pI6c\n",
+ &ipv6_hdr(skb)->saddr);
else if (skb->protocol == htons(ETH_P_IP))
- sprintf(saddr, "%pI4", &ip_hdr(skb)->saddr);
+ pr_warn_ratelimited("bad ICRC from %pI4\n",
+ &ip_hdr(skb)->saddr);
else
- sprintf(saddr, "unknown");
+ pr_warn_ratelimited("bad ICRC from unknown\n");
- pr_warn_ratelimited("bad ICRC from %s\n", saddr);
goto drop;
}
--
1.8.3.1
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