================================================================== BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64 write to 0xffffffff8624d7c8 of 8 bytes by task 0 on cpu 0: tick_do_update_jiffies64+0x100/0x250 kernel/time/tick-sched.c:73 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 read to 0xffffffff8624d7c8 of 8 bytes by interrupt on cpu 1: tick_do_update_jiffies64+0x2b/0x250 kernel/time/tick-sched.c:62 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 arch_local_irq_restore arch/x86/include/asm/paravirt.h:752 [inline] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] _raw_spin_unlock_irqrestore+0x51/0x80 kernel/locking/spinlock.c:191 spin_unlock_irqrestore include/linux/spinlock.h:393 [inline] __wake_up_common_lock+0x85/0xb0 kernel/sched/wait.c:125 __wake_up_sync_key+0x1b/0x20 kernel/sched/wait.c:190 sock_def_readable+0xa4/0x140 net/core/sock.c:2796 tcp_data_ready+0x7d/0xd0 net/ipv4/tcp_input.c:4752 tcp_rcv_established+0xd0c/0xf50 net/ipv4/tcp_input.c:5678 tcp_v4_do_rcv+0x3b5/0x520 net/ipv4/tcp_ipv4.c:1562 tcp_v4_rcv+0x1b2a/0x1d20 net/ipv4/tcp_ipv4.c:1943 ip_protocol_deliver_rcu+0x4d/0x420 net/ipv4/ip_input.c:204 ip_local_deliver_finish+0x110/0x140 net/ipv4/ip_input.c:231 NF_HOOK include/linux/netfilter.h:307 [inline] NF_HOOK include/linux/netfilter.h:301 [inline] ip_local_deliver+0x133/0x210 net/ipv4/ip_input.c:252 dst_input include/net/dst.h:442 [inline] ip_sublist_rcv_finish+0xf8/0x140 net/ipv4/ip_input.c:549 ip_list_rcv_finish net/ipv4/ip_input.c:599 [inline] ip_sublist_rcv+0x418/0x550 net/ipv4/ip_input.c:607 ip_list_rcv+0x2f5/0x322 net/ipv4/ip_input.c:642 __netif_receive_skb_list_ptype net/core/dev.c:5193 [inline] __netif_receive_skb_list_ptype net/core/dev.c:5182 [inline] __netif_receive_skb_list_core+0x350/0x5c0 net/core/dev.c:5241 __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 run_ksoftirqd+0x46/0x60 kernel/softirq.c:603 smpboot_thread_fn+0x37d/0x4a0 kernel/smpboot.c:165 kthread+0x1d4/0x200 drivers/block/aoe/aoecmd.c:1253 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.5.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================