From: Eric Dumazet Date: Sat, 3 Jun 2017 16:29:25 +0000 (-0700) Subject: net: ping: do not abuse udp_poll() X-Git-Tag: release-20171130_firefly~4^2~100^2~1^2~4^2~83 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=45202cd2199c1ef8f5064a6f58e40c41947dc634;p=firefly-linux-kernel-4.4.55.git net: ping: do not abuse udp_poll() [ Upstream commit 77d4b1d36926a9b8387c6b53eeba42bcaaffcea3 ] 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 Signed-off-by: Greg Kroah-Hartman --- diff --git a/include/net/ipv6.h b/include/net/ipv6.h index 9a5c9f013784..ad1d6039185d 100644 --- a/include/net/ipv6.h +++ b/include/net/ipv6.h @@ -958,6 +958,7 @@ 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 afc18e9ca94a..967a47ff78a4 100644 --- a/net/ipv4/af_inet.c +++ b/net/ipv4/af_inet.c @@ -1014,7 +1014,7 @@ static struct inet_protosw inetsw_array[] = .type = SOCK_DGRAM, .protocol = IPPROTO_ICMP, .prot = &ping_prot, - .ops = &inet_dgram_ops, + .ops = &inet_sockraw_ops, .flags = INET_PROTOSW_REUSE, }, diff --git a/net/ipv6/ping.c b/net/ipv6/ping.c index 3e55447b63a4..a830b68e63c9 100644 --- a/net/ipv6/ping.c +++ b/net/ipv6/ping.c @@ -50,7 +50,7 @@ static struct inet_protosw pingv6_protosw = { .type = SOCK_DGRAM, .protocol = IPPROTO_ICMPV6, .prot = &pingv6_prot, - .ops = &inet6_dgram_ops, + .ops = &inet6_sockraw_ops, .flags = INET_PROTOSW_REUSE, }; diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c index c93ede16795d..4d52a0e2f60d 100644 --- a/net/ipv6/raw.c +++ b/net/ipv6/raw.c @@ -1303,7 +1303,7 @@ 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,