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IB/rxe: Remove buffer used for printing IP address

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Avoid smashing the stack when an ICRC error occurs on an IPv6 network.

Signed-off-by: Andrew Boyer <andrew.boyer@dell.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Andrew Boyer 2016-11-23 12:39:17 -05:00 committed by Doug Ledford
parent 95db9d05b7
commit 6e9bb530ff
1 changed files with 5 additions and 6 deletions
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11
drivers/infiniband/sw/rxe/rxe_recv.c
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@ -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;
}