Update Linux to v5.4.148
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.4.148.tar.gz
Change-Id: Ib3d26c5ba9b022e2e03533005c4fed4d7c30b61b
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c
index f82ea12..421b2c8 100644
--- a/net/l2tp/l2tp_core.c
+++ b/net/l2tp/l2tp_core.c
@@ -322,8 +322,13 @@
spin_lock_bh(&pn->l2tp_session_hlist_lock);
+ /* IP encap expects session IDs to be globally unique, while
+ * UDP encap doesn't.
+ */
hlist_for_each_entry(session_walk, g_head, global_hlist)
- if (session_walk->session_id == session->session_id) {
+ if (session_walk->session_id == session->session_id &&
+ (session_walk->tunnel->encap == L2TP_ENCAPTYPE_IP ||
+ tunnel->encap == L2TP_ENCAPTYPE_IP)) {
err = -EEXIST;
goto err_tlock_pnlock;
}
@@ -881,8 +886,10 @@
}
if (tunnel->version == L2TP_HDR_VER_3 &&
- l2tp_v3_ensure_opt_in_linear(session, skb, &ptr, &optr))
+ l2tp_v3_ensure_opt_in_linear(session, skb, &ptr, &optr)) {
+ l2tp_session_dec_refcount(session);
goto error;
+ }
l2tp_recv_common(session, skb, ptr, optr, hdrflags, length);
l2tp_session_dec_refcount(session);
@@ -1025,6 +1032,7 @@
/* Queue the packet to IP for output */
skb->ignore_df = 1;
+ skb_dst_drop(skb);
#if IS_ENABLED(CONFIG_IPV6)
if (l2tp_sk_is_v6(tunnel->sock))
error = inet6_csk_xmit(tunnel->sock, skb, NULL);
@@ -1096,10 +1104,6 @@
goto out_unlock;
}
- /* Get routing info from the tunnel socket */
- skb_dst_drop(skb);
- skb_dst_set(skb, sk_dst_check(sk, 0));
-
inet = inet_sk(sk);
fl = &inet->cork.fl;
switch (tunnel->encap) {
@@ -1455,6 +1459,9 @@
if (sk->sk_type != SOCK_DGRAM)
return -EPROTONOSUPPORT;
+ if (sk->sk_family != PF_INET && sk->sk_family != PF_INET6)
+ return -EPROTONOSUPPORT;
+
if ((encap == L2TP_ENCAPTYPE_UDP && sk->sk_protocol != IPPROTO_UDP) ||
(encap == L2TP_ENCAPTYPE_IP && sk->sk_protocol != IPPROTO_L2TP))
return -EPROTONOSUPPORT;
diff --git a/net/l2tp/l2tp_ip.c b/net/l2tp/l2tp_ip.c
index 0d7c887..955662a 100644
--- a/net/l2tp/l2tp_ip.c
+++ b/net/l2tp/l2tp_ip.c
@@ -20,7 +20,6 @@
#include <net/icmp.h>
#include <net/udp.h>
#include <net/inet_common.h>
-#include <net/inet_hashtables.h>
#include <net/tcp_states.h>
#include <net/protocol.h>
#include <net/xfrm.h>
@@ -209,15 +208,31 @@
return 0;
}
+static int l2tp_ip_hash(struct sock *sk)
+{
+ if (sk_unhashed(sk)) {
+ write_lock_bh(&l2tp_ip_lock);
+ sk_add_node(sk, &l2tp_ip_table);
+ write_unlock_bh(&l2tp_ip_lock);
+ }
+ return 0;
+}
+
+static void l2tp_ip_unhash(struct sock *sk)
+{
+ if (sk_unhashed(sk))
+ return;
+ write_lock_bh(&l2tp_ip_lock);
+ sk_del_node_init(sk);
+ write_unlock_bh(&l2tp_ip_lock);
+}
+
static int l2tp_ip_open(struct sock *sk)
{
/* Prevent autobind. We don't have ports. */
inet_sk(sk)->inet_num = IPPROTO_L2TP;
- write_lock_bh(&l2tp_ip_lock);
- sk_add_node(sk, &l2tp_ip_table);
- write_unlock_bh(&l2tp_ip_lock);
-
+ l2tp_ip_hash(sk);
return 0;
}
@@ -594,8 +609,8 @@
.sendmsg = l2tp_ip_sendmsg,
.recvmsg = l2tp_ip_recvmsg,
.backlog_rcv = l2tp_ip_backlog_recv,
- .hash = inet_hash,
- .unhash = inet_unhash,
+ .hash = l2tp_ip_hash,
+ .unhash = l2tp_ip_unhash,
.obj_size = sizeof(struct l2tp_ip_sock),
#ifdef CONFIG_COMPAT
.compat_setsockopt = compat_ip_setsockopt,
diff --git a/net/l2tp/l2tp_ip6.c b/net/l2tp/l2tp_ip6.c
index 802f19a..0fa694b 100644
--- a/net/l2tp/l2tp_ip6.c
+++ b/net/l2tp/l2tp_ip6.c
@@ -20,8 +20,6 @@
#include <net/icmp.h>
#include <net/udp.h>
#include <net/inet_common.h>
-#include <net/inet_hashtables.h>
-#include <net/inet6_hashtables.h>
#include <net/tcp_states.h>
#include <net/protocol.h>
#include <net/xfrm.h>
@@ -222,15 +220,31 @@
return 0;
}
+static int l2tp_ip6_hash(struct sock *sk)
+{
+ if (sk_unhashed(sk)) {
+ write_lock_bh(&l2tp_ip6_lock);
+ sk_add_node(sk, &l2tp_ip6_table);
+ write_unlock_bh(&l2tp_ip6_lock);
+ }
+ return 0;
+}
+
+static void l2tp_ip6_unhash(struct sock *sk)
+{
+ if (sk_unhashed(sk))
+ return;
+ write_lock_bh(&l2tp_ip6_lock);
+ sk_del_node_init(sk);
+ write_unlock_bh(&l2tp_ip6_lock);
+}
+
static int l2tp_ip6_open(struct sock *sk)
{
/* Prevent autobind. We don't have ports. */
inet_sk(sk)->inet_num = IPPROTO_L2TP;
- write_lock_bh(&l2tp_ip6_lock);
- sk_add_node(sk, &l2tp_ip6_table);
- write_unlock_bh(&l2tp_ip6_lock);
-
+ l2tp_ip6_hash(sk);
return 0;
}
@@ -615,7 +629,7 @@
fl6.flowlabel = ip6_make_flowinfo(ipc6.tclass, fl6.flowlabel);
- dst = ip6_dst_lookup_flow(sk, &fl6, final_p);
+ dst = ip6_dst_lookup_flow(sock_net(sk), sk, &fl6, final_p);
if (IS_ERR(dst)) {
err = PTR_ERR(dst);
goto out;
@@ -728,8 +742,8 @@
.sendmsg = l2tp_ip6_sendmsg,
.recvmsg = l2tp_ip6_recvmsg,
.backlog_rcv = l2tp_ip6_backlog_recv,
- .hash = inet6_hash,
- .unhash = inet_unhash,
+ .hash = l2tp_ip6_hash,
+ .unhash = l2tp_ip6_unhash,
.obj_size = sizeof(struct l2tp_ip6_sock),
#ifdef CONFIG_COMPAT
.compat_setsockopt = compat_ipv6_setsockopt,
diff --git a/net/l2tp/l2tp_netlink.c b/net/l2tp/l2tp_netlink.c
index f5a9bdc..ebb381c 100644
--- a/net/l2tp/l2tp_netlink.c
+++ b/net/l2tp/l2tp_netlink.c
@@ -920,51 +920,51 @@
.cmd = L2TP_CMD_TUNNEL_CREATE,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = l2tp_nl_cmd_tunnel_create,
- .flags = GENL_ADMIN_PERM,
+ .flags = GENL_UNS_ADMIN_PERM,
},
{
.cmd = L2TP_CMD_TUNNEL_DELETE,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = l2tp_nl_cmd_tunnel_delete,
- .flags = GENL_ADMIN_PERM,
+ .flags = GENL_UNS_ADMIN_PERM,
},
{
.cmd = L2TP_CMD_TUNNEL_MODIFY,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = l2tp_nl_cmd_tunnel_modify,
- .flags = GENL_ADMIN_PERM,
+ .flags = GENL_UNS_ADMIN_PERM,
},
{
.cmd = L2TP_CMD_TUNNEL_GET,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = l2tp_nl_cmd_tunnel_get,
.dumpit = l2tp_nl_cmd_tunnel_dump,
- .flags = GENL_ADMIN_PERM,
+ .flags = GENL_UNS_ADMIN_PERM,
},
{
.cmd = L2TP_CMD_SESSION_CREATE,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = l2tp_nl_cmd_session_create,
- .flags = GENL_ADMIN_PERM,
+ .flags = GENL_UNS_ADMIN_PERM,
},
{
.cmd = L2TP_CMD_SESSION_DELETE,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = l2tp_nl_cmd_session_delete,
- .flags = GENL_ADMIN_PERM,
+ .flags = GENL_UNS_ADMIN_PERM,
},
{
.cmd = L2TP_CMD_SESSION_MODIFY,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = l2tp_nl_cmd_session_modify,
- .flags = GENL_ADMIN_PERM,
+ .flags = GENL_UNS_ADMIN_PERM,
},
{
.cmd = L2TP_CMD_SESSION_GET,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = l2tp_nl_cmd_session_get,
.dumpit = l2tp_nl_cmd_session_dump,
- .flags = GENL_ADMIN_PERM,
+ .flags = GENL_UNS_ADMIN_PERM,
},
};