================================================================== BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_nohz_next_event write to 0xffffffff85cb2790 of 4 bytes by task 0 on cpu 1: tick_nohz_stop_tick kernel/time/tick-sched.c:760 [inline] __tick_nohz_idle_stop_tick kernel/time/tick-sched.c:952 [inline] tick_nohz_idle_stop_tick+0x525/0x670 kernel/time/tick-sched.c:973 cpuidle_idle_call kernel/sched/idle.c:151 [inline] do_idle+0x1a5/0x280 kernel/sched/idle.c:263 cpu_startup_entry+0x1b/0x20 kernel/sched/idle.c:355 start_secondary+0x208/0x260 arch/x86/kernel/smpboot.c:264 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:241 read to 0xffffffff85cb2790 of 4 bytes by task 0 on cpu 0: tick_nohz_next_event+0x1a4/0x380 kernel/time/tick-sched.c:725 __tick_nohz_idle_stop_tick kernel/time/tick-sched.c:943 [inline] tick_nohz_idle_stop_tick+0x3c2/0x670 kernel/time/tick-sched.c:973 cpuidle_idle_call kernel/sched/idle.c:151 [inline] do_idle+0x1a5/0x280 kernel/sched/idle.c:263 cpu_startup_entry+0x1b/0x20 kernel/sched/idle.c:355 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:472 x86_64_start_kernel+0x72/0x76 arch/x86/kernel/head64.c:453 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:241 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.0-rc3+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================