================================================================== BUG: KCSAN: data-race in tcp_done / tcp_poll write to 0xffff8881378a052a of 1 bytes by interrupt on cpu 0: tcp_done+0x2ca/0x360 net/ipv4/tcp.c:4524 tcp_reset+0xc6/0x1b0 net/ipv4/tcp_input.c:4314 tcp_rcv_synsent_state_process+0x7e4/0xea0 net/ipv4/tcp_input.c:6180 tcp_rcv_state_process+0x16b/0xf30 net/ipv4/tcp_input.c:6444 tcp_v4_do_rcv+0x434/0x5a0 net/ipv4/tcp_ipv4.c:1683 tcp_v4_rcv+0x172d/0x19f0 net/ipv4/tcp_ipv4.c:2074 ip_protocol_deliver_rcu+0x25a/0x4d0 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x126/0x160 net/ipv4/ip_input.c:233 NF_HOOK include/linux/netfilter.h:307 [inline] ip_local_deliver+0x100/0x1b0 net/ipv4/ip_input.c:254 dst_input include/net/dst.h:461 [inline] ip_rcv_finish net/ipv4/ip_input.c:437 [inline] NF_HOOK include/linux/netfilter.h:307 [inline] ip_rcv+0x1b1/0x260 net/ipv4/ip_input.c:556 __netif_receive_skb_one_core net/core/dev.c:5405 [inline] __netif_receive_skb+0x8b/0x1b0 net/core/dev.c:5519 process_backlog+0x23f/0x3b0 net/core/dev.c:5847 __napi_poll+0x65/0x390 net/core/dev.c:6413 napi_poll net/core/dev.c:6480 [inline] net_rx_action+0x29e/0x650 net/core/dev.c:6567 __do_softirq+0x158/0x2e3 kernel/softirq.c:558 __irq_exit_rcu kernel/softirq.c:637 [inline] irq_exit_rcu+0x41/0x70 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x8d/0xb0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 finish_task_switch+0xfa/0x240 kernel/sched/core.c:4953 context_switch kernel/sched/core.c:5076 [inline] __schedule+0x514/0x6c0 kernel/sched/core.c:6382 schedule_idle+0x17/0x30 kernel/sched/core.c:6482 do_idle+0x22c/0x250 kernel/sched/idle.c:331 cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:400 rest_init+0xed/0xf0 init/main.c:726 arch_call_rest_init+0xa/0xb init/main.c:882 start_kernel+0x5e4/0x669 init/main.c:1140 secondary_startup_64_no_verify+0xc4/0xcb read to 0xffff8881378a052a of 1 bytes by task 14364 on cpu 1: tcp_poll+0xf7/0x560 net/ipv4/tcp.c:539 sock_poll+0x23e/0x260 net/socket.c:1306 vfs_poll include/linux/poll.h:88 [inline] io_poll_check_events+0x212/0x450 fs/io_uring.c:5997 io_apoll_task_func+0x33/0x330 fs/io_uring.c:6057 handle_tw_list fs/io_uring.c:2509 [inline] tctx_task_work+0x7fb/0xa10 fs/io_uring.c:2543 task_work_run+0x8e/0x110 kernel/task_work.c:164 get_signal+0xeca/0x1020 kernel/signal.c:2641 arch_do_signal_or_restart+0x87/0x2d0 arch/x86/kernel/signal.c:867 exit_to_user_mode_loop+0x78/0x130 kernel/entry/common.c:166 exit_to_user_mode_prepare kernel/entry/common.c:201 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x6a/0x90 kernel/entry/common.c:294 do_syscall_64+0x37/0x70 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x00 -> 0x03 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 14364 Comm: syz-executor.1 Not tainted 5.18.0-rc1-syzkaller-00016-g3e732ebf7316-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================