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inet: ping: Fix icmp out counting

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[ Upstream commit 4c0856c225b39b1def6c9a6bc56faca79550da13 ]

When the ping program uses an IPPROTO_ICMP socket to send ICMP_ECHO
messages, ICMP_MIB_OUTMSGS is counted twice.

    ping_v4_sendmsg
      ping_v4_push_pending_frames
        ip_push_pending_frames
          ip_finish_skb
            __ip_make_skb
              icmp_out_count(net, icmp_type); // first count
      icmp_out_count(sock_net(sk), user_icmph.type); // second count

However, when the ping program uses an IPPROTO_RAW socket,
ICMP_MIB_OUTMSGS is counted correctly only once.

Therefore, the first count should be removed.

Fixes: c319b4d76b ("net: ipv4: add IPPROTO_ICMP socket kind")
Signed-off-by: yuan.gao <yuan.gao@ucloud.cn>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Tested-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20251224063145.3615282-1-yuan.gao@ucloud.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
yuan.gao 2025-12-24 14:31:45 +08:00 committed by Greg Kroah-Hartman
parent 8767f238b0
commit bee569f5fc
1 changed files with 1 additions and 3 deletions
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4
net/ipv4/ping.c
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@ -844,10 +844,8 @@ out:
out_free:
if (free)
kfree(ipc.opt);
if (!err) {
icmp_out_count(sock_net(sk), user_icmph.type);
if (!err)
return len;
}
return err;
do_confirm: