================================================================== BUG: KCSAN: data-race in tcp_done / tcp_poll write to 0xffff88813e9226a2 of 1 bytes by interrupt on cpu 0: tcp_done+0x2ca/0x360 net/ipv4/tcp.c:4502 tcp_reset+0xc6/0x1b0 net/ipv4/tcp_input.c:4318 tcp_rcv_synsent_state_process+0x817/0xf50 net/ipv4/tcp_input.c:6200 tcp_rcv_state_process+0x187/0x1010 net/ipv4/tcp_input.c:6471 tcp_v4_do_rcv+0x434/0x5a0 net/ipv4/tcp_ipv4.c:1682 tcp_v4_rcv+0x1710/0x19d0 net/ipv4/tcp_ipv4.c:2072 ip_protocol_deliver_rcu+0x23b/0x480 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:557 __netif_receive_skb_one_core net/core/dev.c:5478 [inline] __netif_receive_skb+0x8b/0x1b0 net/core/dev.c:5592 process_backlog+0x23f/0x3b0 net/core/dev.c:5920 __napi_poll+0x65/0x390 net/core/dev.c:6486 napi_poll net/core/dev.c:6553 [inline] net_rx_action+0x37e/0x730 net/core/dev.c:6664 __do_softirq+0x158/0x2e3 kernel/softirq.c:571 __irq_exit_rcu kernel/softirq.c:650 [inline] irq_exit_rcu+0x41/0x70 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x8d/0xb0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x1b/0x20 native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline] arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline] acpi_safe_halt drivers/acpi/processor_idle.c:111 [inline] acpi_idle_do_entry drivers/acpi/processor_idle.c:554 [inline] acpi_idle_enter+0x283/0x310 drivers/acpi/processor_idle.c:691 cpuidle_enter_state+0x2ee/0x7a0 drivers/cpuidle/cpuidle.c:237 cpuidle_enter+0x3c/0x60 drivers/cpuidle/cpuidle.c:351 call_cpuidle kernel/sched/idle.c:155 [inline] cpuidle_idle_call kernel/sched/idle.c:236 [inline] do_idle+0x1b2/0x250 kernel/sched/idle.c:303 cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:400 rest_init+0xe8/0xf0 init/main.c:726 start_kernel+0x0/0x656 init/main.c:882 start_kernel+0x5d1/0x656 init/main.c:1137 secondary_startup_64_no_verify+0xcf/0xdb read to 0xffff88813e9226a2 of 1 bytes by task 14452 on cpu 1: tcp_poll+0xf7/0x560 net/ipv4/tcp.c:539 sock_poll+0x23e/0x260 net/socket.c:1353 vfs_poll include/linux/poll.h:88 [inline] io_poll_check_events+0x1ee/0x4f0 fs/io_uring.c:6952 io_apoll_task_func+0x36/0x2f0 fs/io_uring.c:7025 handle_tw_list fs/io_uring.c:2984 [inline] tctx_task_work+0x8c0/0xc00 fs/io_uring.c:3013 task_work_run+0x8e/0x110 kernel/task_work.c:177 get_signal+0xeca/0x1020 kernel/signal.c:2634 arch_do_signal_or_restart+0x87/0x2d0 arch/x86/kernel/signal.c:869 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+0x46/0xb0 value changed: 0x00 -> 0x03 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 14452 Comm: syz-executor.5 Not tainted 5.19.0-rc2-syzkaller-00049-g24625f7d91fb-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================