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Date: Mon, 25 Feb 2019 12:12:43 +0800 From: Hangbin Liu <liuhangbin@...il.com> To: netdev@...r.kernel.org Cc: Stefano Brivio <sbrivio@...hat.com>, "David S . Miller" <davem@...emloft.net>, David Ahern <dsa@...ulusnetworks.com>, Hangbin Liu <liuhangbin@...il.com> Subject: [PATCH net] sit: use ipv6_mod_enabled to check if ipv6 is disabled ipv6_mod_enabled() is more safe and gentle to check if ipv6 is disabled at running time. Fixes: 173656accaf5 ("sit: check if IPv6 enabled before calling ip6_err_gen_icmpv6_unreach()") Signed-off-by: Hangbin Liu <liuhangbin@...il.com> --- net/ipv6/sit.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c index e8a1dabef803..eea1f19985a7 100644 --- a/net/ipv6/sit.c +++ b/net/ipv6/sit.c @@ -546,7 +546,7 @@ static int ipip6_err(struct sk_buff *skb, u32 info) } err = 0; - if (__in6_dev_get(skb->dev) && + if (ipv6_mod_enabled() && !ip6_err_gen_icmpv6_unreach(skb, iph->ihl * 4, type, data_len)) goto out; -- 2.19.2
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