This is a note to let you know that I've just added the patch titled
inet6: Remove inet6_destroy_sock() in sk->sk_prot->destroy().
to the 5.15-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:
inet6-remove-inet6_destroy_sock-in-sk-sk_prot-destroy.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From b5fc29233d28be7a3322848ebe73ac327559cdb9 Mon Sep 17 00:00:00 2001
From: Kuniyuki Iwashima <kuniyu@xxxxxxxxxx>
Date: Wed, 19 Oct 2022 15:35:59 -0700
Subject: inet6: Remove inet6_destroy_sock() in sk->sk_prot->destroy().
From: Kuniyuki Iwashima <kuniyu@xxxxxxxxxx>
commit b5fc29233d28be7a3322848ebe73ac327559cdb9 upstream.
After commit d38afeec26ed ("tcp/udp: Call inet6_destroy_sock()
in IPv6 sk->sk_destruct()."), we call inet6_destroy_sock() in
sk->sk_destruct() by setting inet6_sock_destruct() to it to make
sure we do not leak inet6-specific resources.
Now we can remove unnecessary inet6_destroy_sock() calls in
sk->sk_prot->destroy().
DCCP and SCTP have their own sk->sk_destruct() function, so we
change them separately in the following patches.
Signed-off-by: Kuniyuki Iwashima <kuniyu@xxxxxxxxxx>
Reviewed-by: Matthieu Baerts <matthieu.baerts@xxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Ziyang Xuan <william.xuanziyang@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/ipv6/ping.c | 6 ------
net/ipv6/raw.c | 2 --
net/ipv6/tcp_ipv6.c | 8 +-------
net/ipv6/udp.c | 2 --
net/l2tp/l2tp_ip6.c | 2 --
net/mptcp/protocol.c | 7 -------
6 files changed, 1 insertion(+), 26 deletions(-)
--- a/net/ipv6/ping.c
+++ b/net/ipv6/ping.c
@@ -22,11 +22,6 @@
#include <linux/proc_fs.h>
#include <net/ping.h>
-static void ping_v6_destroy(struct sock *sk)
-{
- inet6_destroy_sock(sk);
-}
-
/* Compatibility glue so we can support IPv6 when it's compiled as a module */
static int dummy_ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len,
int *addr_len)
@@ -171,7 +166,6 @@ struct proto pingv6_prot = {
.owner = THIS_MODULE,
.init = ping_init_sock,
.close = ping_close,
- .destroy = ping_v6_destroy,
.connect = ip6_datagram_connect_v6_only,
.disconnect = __udp_disconnect,
.setsockopt = ipv6_setsockopt,
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -1211,8 +1211,6 @@ static void raw6_destroy(struct sock *sk
lock_sock(sk);
ip6_flush_pending_frames(sk);
release_sock(sk);
-
- inet6_destroy_sock(sk);
}
static int rawv6_init_sk(struct sock *sk)
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -1972,12 +1972,6 @@ static int tcp_v6_init_sock(struct sock
return 0;
}
-static void tcp_v6_destroy_sock(struct sock *sk)
-{
- tcp_v4_destroy_sock(sk);
- inet6_destroy_sock(sk);
-}
-
#ifdef CONFIG_PROC_FS
/* Proc filesystem TCPv6 sock list dumping. */
static void get_openreq6(struct seq_file *seq,
@@ -2170,7 +2164,7 @@ struct proto tcpv6_prot = {
.accept = inet_csk_accept,
.ioctl = tcp_ioctl,
.init = tcp_v6_init_sock,
- .destroy = tcp_v6_destroy_sock,
+ .destroy = tcp_v4_destroy_sock,
.shutdown = tcp_shutdown,
.setsockopt = tcp_setsockopt,
.getsockopt = tcp_getsockopt,
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -1649,8 +1649,6 @@ void udpv6_destroy_sock(struct sock *sk)
udp_encap_disable();
}
}
-
- inet6_destroy_sock(sk);
}
/*
--- a/net/l2tp/l2tp_ip6.c
+++ b/net/l2tp/l2tp_ip6.c
@@ -255,8 +255,6 @@ static void l2tp_ip6_destroy_sock(struct
if (tunnel)
l2tp_tunnel_delete(tunnel);
-
- inet6_destroy_sock(sk);
}
static int l2tp_ip6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -3621,12 +3621,6 @@ static const struct proto_ops mptcp_v6_s
static struct proto mptcp_v6_prot;
-static void mptcp_v6_destroy(struct sock *sk)
-{
- mptcp_destroy(sk);
- inet6_destroy_sock(sk);
-}
-
static struct inet_protosw mptcp_v6_protosw = {
.type = SOCK_STREAM,
.protocol = IPPROTO_MPTCP,
@@ -3642,7 +3636,6 @@ int __init mptcp_proto_v6_init(void)
mptcp_v6_prot = mptcp_prot;
strcpy(mptcp_v6_prot.name, "MPTCPv6");
mptcp_v6_prot.slab = NULL;
- mptcp_v6_prot.destroy = mptcp_v6_destroy;
mptcp_v6_prot.obj_size = sizeof(struct mptcp6_sock);
err = proto_register(&mptcp_v6_prot, 1);
Patches currently in stable-queue which might be from kuniyu@xxxxxxxxxx are
queue-5.15/sctp-call-inet6_destroy_sock-via-sk-sk_destruct.patch
queue-5.15/tcp-udp-call-inet6_destroy_sock-in-ipv6-sk-sk_destruct.patch
queue-5.15/inet6-remove-inet6_destroy_sock-in-sk-sk_prot-destroy.patch
queue-5.15/dccp-call-inet6_destroy_sock-via-sk-sk_destruct.patch
queue-5.15/udp-call-inet6_destroy_sock-in-setsockopt-ipv6_addrform.patch
