================================================================== BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64 write to 0xffffffff8624d7c8 of 8 bytes by interrupt on cpu 1: tick_do_update_jiffies64+0x100/0x250 kernel/time/tick-sched.c:73 tick_sched_do_timer+0xd4/0xe0 kernel/time/tick-sched.c:138 tick_sched_timer+0x43/0xe0 kernel/time/tick-sched.c:1303 __run_hrtimer kernel/time/hrtimer.c:1517 [inline] __hrtimer_run_queues+0x274/0x5f0 kernel/time/hrtimer.c:1579 hrtimer_interrupt+0x22a/0x480 kernel/time/hrtimer.c:1641 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1110 [inline] smp_apic_timer_interrupt+0xdc/0x280 arch/x86/kernel/apic/apic.c:1135 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 __sanitizer_cov_trace_pc+0x0/0x50 kernel/kcov.c:915 __netif_receive_skb_list_core+0x299/0x5c0 net/core/dev.c:5226 __netif_receive_skb_list net/core/dev.c:5293 [inline] netif_receive_skb_list_internal+0x5d8/0x830 net/core/dev.c:5388 gro_normal_list.part.0+0x3a/0xb0 net/core/dev.c:5810 gro_normal_list net/core/dev.c:5823 [inline] gro_normal_one+0x162/0x170 net/core/dev.c:5822 napi_skb_finish net/core/dev.c:5838 [inline] napi_gro_receive+0x288/0x300 net/core/dev.c:5870 receive_buf+0x284/0x30b0 drivers/net/virtio_net.c:1061 virtnet_receive drivers/net/virtio_net.c:1323 [inline] virtnet_poll+0x436/0x7d0 drivers/net/virtio_net.c:1428 napi_poll net/core/dev.c:6532 [inline] net_rx_action+0x3ae/0xa90 net/core/dev.c:6600 __do_softirq+0x115/0x33f kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0xbb/0xe0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] do_IRQ+0x81/0x130 arch/x86/kernel/irq.c:263 ret_from_intr+0x0/0x21 read to 0xffffffff8624d7c8 of 8 bytes by task 0 on cpu 0: tick_do_update_jiffies64+0x2b/0x250 kernel/time/tick-sched.c:62 tick_nohz_restart_sched_tick kernel/time/tick-sched.c:844 [inline] __tick_nohz_idle_restart_tick+0x31/0x1b0 kernel/time/tick-sched.c:1151 tick_nohz_idle_exit+0x1af/0x1e0 kernel/time/tick-sched.c:1192 do_idle+0xb1/0x290 kernel/sched/idle.c:282 cpu_startup_entry+0x1b/0x20 kernel/sched/idle.c:361 rest_init+0xec/0xf6 init/main.c:452 arch_call_rest_init+0x17/0x37 start_kernel+0x838/0x85e init/main.c:786 x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:490 x86_64_start_kernel+0x72/0x76 arch/x86/kernel/head64.c:471 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:242 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================