From f7eb769a8db069e8a999cea74457c24d813b7c38 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sat, 3 Jun 2017 09:29:25 -0700 Subject: [PATCH] net: ping: do not abuse udp_poll() commit 77d4b1d36926a9b8387c6b53eeba42bcaaffcea3 upstream. Alexander reported various KASAN messages triggered in recent kernels The problem is that ping sockets should not use udp_poll() in the first place, and recent changes in UDP stack finally exposed this old bug. Fixes: c319b4d76b9e ("net: ipv4: add IPPROTO_ICMP socket kind") Fixes: 6d0bfe226116 ("net: ipv6: Add IPv6 support to the ping socket.") Signed-off-by: Eric Dumazet Reported-by: Sasha Levin Cc: Solar Designer Cc: Vasiliy Kulikov Cc: Lorenzo Colitti Acked-By: Lorenzo Colitti Tested-By: Lorenzo Colitti Signed-off-by: David S. Miller [wt: removed the parts related to ping6 as 6d0bfe226116 is not in 3.10] Signed-off-by: Willy Tarreau --- include/net/ipv6.h | 1 + net/ipv4/af_inet.c | 2 +- net/ipv6/raw.c | 2 +- 3 files changed, 3 insertions(+), 2 deletions(-) diff --git a/include/net/ipv6.h b/include/net/ipv6.h index 413e23be60d1..1c96547c2a3f 100644 --- a/include/net/ipv6.h +++ b/include/net/ipv6.h @@ -822,6 +822,7 @@ extern int inet6_hash_connect(struct inet_timewait_death_row *death_row, */ extern const struct proto_ops inet6_stream_ops; extern const struct proto_ops inet6_dgram_ops; +extern const struct proto_ops inet6_sockraw_ops; struct group_source_req; struct group_filter; diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c index 975c369d4e6d..03610ebd8d0b 100644 --- a/net/ipv4/af_inet.c +++ b/net/ipv4/af_inet.c @@ -1053,7 +1053,7 @@ static struct inet_protosw inetsw_array[] = .type = SOCK_DGRAM, .protocol = IPPROTO_ICMP, .prot = &ping_prot, - .ops = &inet_dgram_ops, + .ops = &inet_sockraw_ops, .no_check = UDP_CSUM_DEFAULT, .flags = INET_PROTOSW_REUSE, }, diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c index c7ce2be09d90..a05e1f1a1a38 100644 --- a/net/ipv6/raw.c +++ b/net/ipv6/raw.c @@ -1319,7 +1319,7 @@ void raw6_proc_exit(void) #endif /* CONFIG_PROC_FS */ /* Same as inet6_dgram_ops, sans udp_poll. */ -static const struct proto_ops inet6_sockraw_ops = { +const struct proto_ops inet6_sockraw_ops = { .family = PF_INET6, .owner = THIS_MODULE, .release = inet6_release, -- 2.20.1