================================================================== BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_sched_do_timer write to 0xffffffff8764e210 of 4 bytes by interrupt on cpu 0: tick_sched_do_timer+0xb4/0xd0 kernel/time/tick-sched.c:141 tick_sched_timer+0x3f/0xd0 kernel/time/tick-sched.c:1313 __run_hrtimer kernel/time/hrtimer.c:1520 [inline] __hrtimer_run_queues+0x271/0x600 kernel/time/hrtimer.c:1584 hrtimer_interrupt+0x226/0x490 kernel/time/hrtimer.c:1646 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1113 [inline] smp_apic_timer_interrupt+0xd8/0x270 arch/x86/kernel/apic/apic.c:1138 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 __list_del include/linux/list.h:112 [inline] __list_del_entry include/linux/list.h:135 [inline] __list_del_entry include/linux/list.h:130 [inline] skb_list_del_init include/linux/skbuff.h:1522 [inline] netif_receive_skb_list_internal+0xdd/0x810 net/core/dev.c:5404 gro_normal_list.part.0+0x37/0xa0 net/core/dev.c:5536 gro_normal_list net/core/dev.c:5549 [inline] gro_normal_one+0x14c/0x160 net/core/dev.c:5548 napi_skb_finish net/core/dev.c:5876 [inline] napi_gro_receive+0x27d/0x2f0 net/core/dev.c:5908 receive_buf+0x24c/0x3420 drivers/net/virtio_net.c:1073 virtnet_receive drivers/net/virtio_net.c:1335 [inline] virtnet_poll+0x343/0x790 drivers/net/virtio_net.c:1440 napi_poll net/core/dev.c:6571 [inline] net_rx_action+0x3ad/0xac0 net/core/dev.c:6639 __do_softirq+0x118/0x34a kernel/softirq.c:292 run_ksoftirqd+0x41/0x60 kernel/softirq.c:604 smpboot_thread_fn+0x374/0x4a0 kernel/smpboot.c:165 kthread+0x203/0x230 kernel/kthread.c:268 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352 read to 0xffffffff8764e210 of 4 bytes by task 0 on cpu 1: tick_nohz_stop_tick kernel/time/tick-sched.c:780 [inline] __tick_nohz_idle_stop_tick kernel/time/tick-sched.c:973 [inline] tick_nohz_idle_stop_tick+0x191/0x680 kernel/time/tick-sched.c:994 cpuidle_idle_call kernel/sched/idle.c:151 [inline] do_idle+0x1ad/0x290 kernel/sched/idle.c:269 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:361 start_secondary+0x169/0x1b0 arch/x86/kernel/smpboot.c:268 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:242 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================