This is a note to let you know that I've just added the patch titled net: ping6: Fix ping -6 with interface name to the 5.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: net-ping6-fix-ping-6-with-interface-name.patch and it can be found in the queue-5.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 26c495a1a5f6359846651fda6af03c4f4b18bf11 Author: Aya Levin <ayal@xxxxxxxxxx> Date: Tue May 31 11:45:44 2022 +0300 net: ping6: Fix ping -6 with interface name [ Upstream commit e6652a8ef3e64d953168a95878fe29b934ad78ac ] When passing interface parameter to ping -6: $ ping -6 ::11:141:84:9 -I eth2 Results in: PING ::11:141:84:10(::11:141:84:10) from ::11:141:84:9 eth2: 56 data bytes ping: sendmsg: Invalid argument ping: sendmsg: Invalid argument Initialize the fl6's outgoing interface (OIF) before triggering ip6_datagram_send_ctl. Don't wipe fl6 after ip6_datagram_send_ctl() as changes in fl6 that may happen in the function are overwritten explicitly. Update comment accordingly. Fixes: 13651224c00b ("net: ping6: support setting basic SOL_IPV6 options via cmsg") Signed-off-by: Aya Levin <ayal@xxxxxxxxxx> Reviewed-by: Gal Pressman <gal@xxxxxxxxxx> Reviewed-by: Saeed Mahameed <saeedm@xxxxxxxxxx> Signed-off-by: Tariq Toukan <tariqt@xxxxxxxxxx> Reviewed-by: David Ahern <dsahern@xxxxxxxxxx> Link: https://lore.kernel.org/r/20220531084544.15126-1-tariqt@xxxxxxxxxx Signed-off-by: Paolo Abeni <pabeni@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/net/ipv6/ping.c b/net/ipv6/ping.c index ff033d16549e..ecf3a553a0dc 100644 --- a/net/ipv6/ping.c +++ b/net/ipv6/ping.c @@ -101,6 +101,9 @@ static int ping_v6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len) ipc6.sockc.tsflags = sk->sk_tsflags; ipc6.sockc.mark = sk->sk_mark; + memset(&fl6, 0, sizeof(fl6)); + fl6.flowi6_oif = oif; + if (msg->msg_controllen) { struct ipv6_txoptions opt = {}; @@ -112,17 +115,14 @@ static int ping_v6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len) return err; /* Changes to txoptions and flow info are not implemented, yet. - * Drop the options, fl6 is wiped below. + * Drop the options. */ ipc6.opt = NULL; } - memset(&fl6, 0, sizeof(fl6)); - fl6.flowi6_proto = IPPROTO_ICMPV6; fl6.saddr = np->saddr; fl6.daddr = *daddr; - fl6.flowi6_oif = oif; fl6.flowi6_mark = ipc6.sockc.mark; fl6.flowi6_uid = sk->sk_uid; fl6.fl6_icmp_type = user_icmph.icmp6_type;