================================================================== BUG: KCSAN: data-race in __inet_lookup_established / inet_put_port write to 0xffff888129d4720e of 2 bytes by task 3641 on cpu 1: __inet_put_port net/ipv4/inet_hashtables.c:190 [inline] inet_put_port+0x219/0x3e0 net/ipv4/inet_hashtables.c:209 tcp_set_state net/ipv4/tcp.c:2635 [inline] __tcp_close+0x4c2/0xfa0 net/ipv4/tcp.c:2794 tcp_close+0x26/0x90 net/ipv4/tcp.c:2919 inet_release+0xc9/0xf0 net/ipv4/af_inet.c:427 inet6_release+0x3e/0x50 net/ipv6/af_inet6.c:480 __sock_release net/socket.c:654 [inline] sock_release+0x44/0xe0 net/socket.c:682 rds_tcp_accept_one+0xd4/0x680 net/rds/tcp_listen.c:230 rds_tcp_accept_worker+0x25/0x70 net/rds/tcp.c:532 process_one_work+0x434/0x860 kernel/workqueue.c:2597 worker_thread+0x5f2/0xa10 kernel/workqueue.c:2748 kthread+0x1d7/0x210 kernel/kthread.c:389 ret_from_fork+0x2e/0x40 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:296 read to 0xffff888129d4720c of 4 bytes by interrupt on cpu 0: inet_match include/net/inet_hashtables.h:364 [inline] __inet_lookup_established+0x11b/0x480 net/ipv4/inet_hashtables.c:492 __inet_lookup include/net/inet_hashtables.h:403 [inline] __inet_lookup_skb include/net/inet_hashtables.h:445 [inline] tcp_v4_rcv+0x95f/0x1b70 net/ipv4/tcp_ipv4.c:2024 ip_protocol_deliver_rcu+0x356/0x6d0 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x13c/0x1a0 net/ipv4/ip_input.c:233 NF_HOOK include/linux/netfilter.h:303 [inline] ip_local_deliver+0xec/0x1c0 net/ipv4/ip_input.c:254 dst_input include/net/dst.h:468 [inline] ip_rcv_finish net/ipv4/ip_input.c:449 [inline] NF_HOOK include/linux/netfilter.h:303 [inline] ip_rcv+0x197/0x270 net/ipv4/ip_input.c:569 __netif_receive_skb_one_core net/core/dev.c:5452 [inline] __netif_receive_skb+0x90/0x1b0 net/core/dev.c:5566 process_backlog+0x21f/0x380 net/core/dev.c:5894 __napi_poll+0x60/0x3b0 net/core/dev.c:6460 napi_poll net/core/dev.c:6527 [inline] net_rx_action+0x32b/0x750 net/core/dev.c:6660 __do_softirq+0xc1/0x265 kernel/softirq.c:553 invoke_softirq kernel/softirq.c:427 [inline] __irq_exit_rcu kernel/softirq.c:632 [inline] irq_exit_rcu+0x3b/0x90 kernel/softirq.c:644 sysvec_apic_timer_interrupt+0x6d/0x80 arch/x86/kernel/apic/apic.c:1109 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 __preempt_count_dec_and_test arch/x86/include/asm/preempt.h:95 [inline] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] _raw_spin_unlock_irqrestore+0x3d/0x50 kernel/locking/spinlock.c:194 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] pcpu_alloc+0x81e/0x1280 mm/percpu.c:1843 __alloc_percpu_gfp+0x26/0x30 mm/percpu.c:1930 ip_tunnel_init+0x59/0x270 net/ipv4/ip_tunnel.c:1249 ipgre_tunnel_init+0x352/0x370 net/ipv4/ip_gre.c:1012 register_netdevice+0x217/0xcd0 net/core/dev.c:9981 ip_tunnel_newlink+0x3f2/0x730 net/ipv4/ip_tunnel.c:1172 ipgre_newlink+0x1ce/0x210 net/ipv4/ip_gre.c:1366 rtnl_newlink_create net/core/rtnetlink.c:3472 [inline] __rtnl_newlink net/core/rtnetlink.c:3689 [inline] rtnl_newlink+0xe83/0x1600 net/core/rtnetlink.c:3702 rtnetlink_rcv_msg+0x807/0x8c0 net/core/rtnetlink.c:6424 netlink_rcv_skb+0x126/0x220 net/netlink/af_netlink.c:2549 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:6442 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x56f/0x640 net/netlink/af_netlink.c:1365 netlink_sendmsg+0x665/0x770 net/netlink/af_netlink.c:1914 sock_sendmsg_nosec net/socket.c:725 [inline] sock_sendmsg net/socket.c:748 [inline] ____sys_sendmsg+0x37c/0x4d0 net/socket.c:2494 ___sys_sendmsg net/socket.c:2548 [inline] __sys_sendmsg+0x1e9/0x270 net/socket.c:2577 __do_sys_sendmsg net/socket.c:2586 [inline] __se_sys_sendmsg net/socket.c:2584 [inline] __x64_sys_sendmsg+0x46/0x50 net/socket.c:2584 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd value changed: 0x4001e3c1 -> 0x0000e3c1 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 6715 Comm: syz-executor.1 Not tainted 6.5.0-rc2-syzkaller-00184-g57f1f9dd3abe #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 ==================================================================