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net: ping: do not abuse udp_poll()

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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: c319b4d76b ("net: ipv4: add IPPROTO_ICMP socket kind")
Fixes: 6d0bfe2261 ("net: ipv6: Add IPv6 support to the ping socket.")
Signed-off-by: Eric Dumazet <[email protected]>
Reported-by: Sasha Levin <[email protected]>
Cc: Solar Designer <[email protected]>
Cc: Vasiliy Kulikov <[email protected]>
Cc: Lorenzo Colitti <[email protected]>
Acked-By: Lorenzo Colitti <[email protected]>
Tested-By: Lorenzo Colitti <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Eric Dumazet 2017-06-03 09:29:25 -07:00 • committed by David S. Miller
commit 77d4b1d369
4 changed files with 4 additions and 3 deletions
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2
net/ipv6/ping.c
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@ -192,7 +192,7 @@ 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,
};

2
net/ipv6/raw.c
View file

@ -1338,7 +1338,7 @@ 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,