================================================================== BUG: KCSAN: data-race in tcp_done / tcp_poll write to 0xffff88815625756a of 1 bytes by interrupt on cpu 1: tcp_done+0x2ca/0x360 net/ipv4/tcp.c:4457 tcp_reset+0xc6/0x1b0 net/ipv4/tcp_input.c:4314 tcp_rcv_synsent_state_process+0x80f/0x14f0 net/ipv4/tcp_input.c:6158 tcp_rcv_state_process+0x16c/0x1250 net/ipv4/tcp_input.c:6422 tcp_v4_do_rcv+0x42c/0x590 net/ipv4/tcp_ipv4.c:1741 tcp_v4_rcv+0x2087/0x2720 net/ipv4/tcp_ipv4.c:2119 ip_protocol_deliver_rcu+0x2a8/0x570 net/ipv4/ip_input.c:204 ip_local_deliver_finish net/ipv4/ip_input.c:231 [inline] NF_HOOK include/linux/netfilter.h:307 [inline] ip_local_deliver+0x1d6/0x2a0 net/ipv4/ip_input.c:252 dst_input include/net/dst.h:461 [inline] ip_rcv_finish net/ipv4/ip_input.c:429 [inline] NF_HOOK include/linux/netfilter.h:307 [inline] ip_rcv+0x1b1/0x260 net/ipv4/ip_input.c:540 __netif_receive_skb_one_core net/core/dev.c:5351 [inline] __netif_receive_skb+0x8b/0x1b0 net/core/dev.c:5465 process_backlog+0x23f/0x3e0 net/core/dev.c:5797 __napi_poll+0x65/0x3f0 net/core/dev.c:6365 napi_poll net/core/dev.c:6432 [inline] net_rx_action+0x29e/0x650 net/core/dev.c:6519 __do_softirq+0x158/0x2de kernel/softirq.c:558 __irq_exit_rcu kernel/softirq.c:637 [inline] irq_exit_rcu+0x37/0x70 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x8d/0xb0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 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:115 [inline] acpi_idle_do_entry drivers/acpi/processor_idle.c:556 [inline] acpi_idle_enter+0x282/0x300 drivers/acpi/processor_idle.c:692 cpuidle_enter_state+0x2b4/0x7d0 drivers/cpuidle/cpuidle.c:237 cpuidle_enter+0x3c/0x60 drivers/cpuidle/cpuidle.c:351 call_cpuidle kernel/sched/idle.c:158 [inline] cpuidle_idle_call kernel/sched/idle.c:239 [inline] do_idle+0x1b2/0x250 kernel/sched/idle.c:306 cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:403 secondary_startup_64_no_verify+0xc4/0xcb read to 0xffff88815625756a of 1 bytes by task 22051 on cpu 0: tcp_poll+0xfa/0x580 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+0x1ff/0x530 fs/io_uring.c:5532 io_apoll_task_func+0x33/0x800 fs/io_uring.c:5591 handle_tw_list fs/io_uring.c:2328 [inline] tctx_task_work+0x8b2/0xc90 fs/io_uring.c:2362 task_work_run+0x8e/0x110 kernel/task_work.c:164 tracehook_notify_signal include/linux/tracehook.h:213 [inline] handle_signal_work kernel/entry/common.c:146 [inline] exit_to_user_mode_loop kernel/entry/common.c:172 [inline] exit_to_user_mode_prepare+0x102/0x190 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:300 do_syscall_64+0x50/0xd0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x00 -> 0x03 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 22051 Comm: syz-executor.4 Not tainted 5.17.0-rc7-syzkaller-00235-gaad611a868d1-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================