Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Kuniyuki Iwashima 2919297b18 mpls: Use rcu_dereference_rtnl() in mpls_route_input_rcu(). ... [ Upstream commit 6dbb0d97c5096072c78a6abffe393584e57ae945 ] As syzbot reported [0], mpls_route_input_rcu() can be called from mpls_getroute(), where is under RTNL. net->mpls.platform_label is only updated under RTNL. Let's use rcu_dereference_rtnl() in mpls_route_input_rcu() to silence the splat. [0]: WARNING: suspicious RCU usage 6.15.0-rc7-syzkaller-00082-g5cdb2c77c4c3 #0 Not tainted ---------------------------- net/mpls/af_mpls.c:84 suspicious rcu_dereference_check() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 1 lock held by syz.2.4451/17730: #0: ffffffff9012a3e8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #0: ffffffff9012a3e8 (rtnl_mutex){+.+.}-{4:4}, at: rtnetlink_rcv_msg+0x371/0xe90 net/core/rtnetlink.c:6961 stack backtrace: CPU: 1 UID: 0 PID: 17730 Comm: syz.2.4451 Not tainted 6.15.0-rc7-syzkaller-00082-g5cdb2c77c4c3 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: <TASK> __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x16c/0x1f0 lib/dump_stack.c:120 lockdep_rcu_suspicious+0x166/0x260 kernel/locking/lockdep.c:6865 mpls_route_input_rcu+0x1d4/0x200 net/mpls/af_mpls.c:84 mpls_getroute+0x621/0x1ea0 net/mpls/af_mpls.c:2381 rtnetlink_rcv_msg+0x3c9/0xe90 net/core/rtnetlink.c:6964 netlink_rcv_skb+0x16d/0x440 net/netlink/af_netlink.c:2534 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x53a/0x7f0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x8d1/0xdd0 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg net/socket.c:727 [inline] ____sys_sendmsg+0xa98/0xc70 net/socket.c:2566 ___sys_sendmsg+0x134/0x1d0 net/socket.c:2620 __sys_sendmmsg+0x200/0x420 net/socket.c:2709 __do_sys_sendmmsg net/socket.c:2736 [inline] __se_sys_sendmmsg net/socket.c:2733 [inline] __x64_sys_sendmmsg+0x9c/0x100 net/socket.c:2733 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f0a2818e969 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0a28f52038 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f0a283b5fa0 RCX: 00007f0a2818e969 RDX: 0000000000000003 RSI: 0000200000000080 RDI: 0000000000000003 RBP: 00007f0a28210ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f0a283b5fa0 R15: 00007ffce5e9f268 </TASK> Fixes: 0189197f44 ("mpls: Basic routing support") Reported-by: syzbot+8a583bdd1a5cc0b0e068@syzkaller.appspotmail.com Closes: https://lore.kernel.org/netdev/68507981.a70a0220.395abc.01ef.GAE@google.com/ Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com> Link: https://patch.msgid.link/20250616201532.1036568-1-kuni1840@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2025-06-27 11:02:57 +01:00
..
6lowpan
9p	9p/xen: fix release of IRQ	2024-12-14 19:44:41 +01:00
802	net: 802: LLC+SNAP OID:PID lookup on start of skb data	2025-02-01 18:18:45 +01:00
8021q	net: vlan: don't propagate flags on open	2025-05-02 07:39:11 +02:00
appletalk	appletalk: Fix Use-After-Free in atalk_ioctl	2023-12-20 15:41:18 +01:00
atm	atm: Revert atm_account_tx() if copy_from_iter_full() fails.	2025-06-27 11:02:56 +01:00
ax25
batman-adv	batman-adv: Ignore own maximum aggregation size during RX	2025-04-10 14:29:38 +02:00
bluetooth	Bluetooth: L2CAP: Fix not responding with L2CAP_CR_LE_ENCRYPTION	2025-06-27 11:02:49 +01:00
bpf
bpfilter
bridge	netfilter: bridge: Move specific fragmented packet to slow_path instead of dropping it	2025-06-27 11:02:46 +01:00
caif
can	can: bcm: add missing rcu read protection for procfs content	2025-06-04 14:32:35 +02:00
ceph	libceph: fix race between delayed_work() and ceph_monc_stop()	2024-07-18 11:40:55 +02:00
core	sock: Correct error checking condition for (assign|release)_proto_idx()	2025-06-27 11:02:55 +01:00
dcb	net: dcb: choose correct policy to parse DCB_ATTR_BCN	2023-08-11 11:53:57 +02:00
dccp	net: fix data-races around sk->sk_forward_alloc	2025-02-01 18:18:52 +01:00
decnet
dns_resolver
dsa	net: dsa: tag_sja1105: fix MAC DA patching from meta frames	2023-07-27 08:37:24 +02:00
ethernet	ethernet: Add helper for assigning packet type when dest address does not match device address	2024-05-02 16:18:36 +02:00
hsr	hsr: Handle failures in module init	2024-03-26 18:22:25 -04:00
ieee802154	net: ieee802154: do not leave a dangling sk pointer in ieee802154_create()	2024-12-14 19:44:51 +01:00
ife	net: sched: ife: fix potential use-after-free	2024-01-08 11:29:44 +01:00
ipv4	ipv4/route: Use this_cpu_inc() for stats on PREEMPT_RT	2025-06-27 11:02:54 +01:00
ipv6	netfilter: nf_tables: nft_fib_ipv6: fix VRF ipv4/ipv6 result discrepancy	2025-06-27 11:02:47 +01:00
iucv	s390/iucv: fix receive buffer virtual vs physical address confusion	2024-09-04 13:14:57 +02:00
kcm	kcm: Serialise kcm_sendmsg() for the same socket.	2024-09-04 13:14:59 +02:00
key	net: af_key: fix sadb_x_filter validation	2023-08-30 16:27:16 +02:00
l2tp	genetlink: hold RCU in genlmsg_mcast()	2024-11-08 16:20:50 +01:00
l3mdev
lapb
llc	llc: fix data loss when reading from a socket in llc_ui_recvmsg()	2025-06-04 14:32:35 +02:00
mac80211	wifi: mac80211: do not offer a mesh path if forwarding is disabled	2025-06-27 11:02:55 +01:00
mac802154	mac802154: check local interfaces before deleting sdata list	2025-02-01 18:18:50 +01:00
mpls	mpls: Use rcu_dereference_rtnl() in mpls_route_input_rcu().	2025-06-27 11:02:57 +01:00
ncsi	net: ncsi: Fix GCPS 64-bit member variables	2025-06-27 11:02:46 +01:00
netfilter	netfilter: nft_socket: fix sk refcount leaks	2025-06-27 11:02:44 +01:00
netlabel	calipso: unlock rcu before returning -EAFNOSUPPORT	2025-06-27 11:02:50 +01:00
netlink	netlink: terminate outstanding dump on socket close	2024-12-14 19:44:18 +01:00
netrom	netrom: check buffer length before accessing it	2025-01-09 13:23:35 +01:00
nfc	NFC: nci: uart: Set tty->disc_data only in success path	2025-06-27 11:02:51 +01:00
nsh	nsh: Restore skb->{protocol,data,mac_header} for outer header in nsh_gso_segment().	2024-05-17 11:43:49 +02:00
openvswitch	openvswitch: Fix unsafe attribute parsing in output_userspace()	2025-06-04 14:32:29 +02:00
packet	af_packet: fix vlan_get_protocol_dgram() vs MSG_PEEK	2025-01-09 13:23:35 +01:00
phonet	phonet: fix rtm_phonet_notify() skb allocation	2024-05-17 11:43:54 +02:00
psample	psample: Require 'CAP_NET_ADMIN' when joining "packets" group	2023-12-13 18:18:17 +01:00
qrtr	net: qrtr: Update packets cloning when broadcasting	2024-11-08 16:20:33 +01:00
rds	net:rds: Fix possible deadlock in rds_message_put	2024-09-04 13:15:03 +02:00
rfkill	net: rfkill: gpio: Add check for clk_enable()	2024-12-14 19:44:27 +01:00
rose	net: rose: lock the socket in rose_bind()	2025-03-13 12:43:06 +01:00
rxrpc	rxrpc: Fix response to PING RESPONSE ACKs to a dead call	2024-02-23 08:25:07 +01:00
sched	net_sched: tbf: fix a race in tbf_change()	2025-06-27 11:02:50 +01:00
sctp	sctp: Do not wake readers in __sctp_write_space()	2025-06-27 11:02:54 +01:00
smc	net/smc: check sndbuf_space again after NOSPACE flag is set in smc_poll	2025-01-09 13:23:27 +01:00
strparser
sunrpc	sunrpc: update nextcheck time when adding new cache entries	2025-06-27 11:02:53 +01:00
switchdev
tipc	tipc: fix NULL pointer dereference in tipc_mon_reinit_self()	2025-05-02 07:39:25 +02:00
tls	ktls, sockmap: Fix missing uncharge operation	2025-06-27 11:02:46 +01:00
unix	af_unix: Remove put_pid()/put_cred() in copy_peercred().	2024-09-12 11:03:52 +02:00
vmw_vsock	vsock: avoid timeout during connect() if the socket is closing	2025-04-10 14:29:43 +02:00
wimax
wireless	wifi: nl80211: reject cooked mode if it is set along with other flags	2025-03-13 12:43:28 +01:00
x25	net/x25: fix incorrect parameter validation in the x25_getsockopt() function	2024-03-26 18:22:18 -04:00
xdp	xsk: validate user input for XDP_{UMEM|COMPLETION}_FILL_RING	2024-06-16 13:28:52 +02:00
xfrm	xfrm: Sanitize marks before insert	2025-06-04 14:32:35 +02:00
compat.c
Kconfig
Makefile
socket.c	net: Save and restore msg_namelen in sock_sendmsg	2024-01-15 18:25:26 +01:00
sysctl_net.c