================================================================== BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_nohz_idle_stop_tick write to 0xffffffff85d056d0 of 4 bytes by task 0 on cpu 0: tick_nohz_stop_tick kernel/time/tick-sched.c:775 [inline] __tick_nohz_idle_stop_tick kernel/time/tick-sched.c:967 [inline] tick_nohz_idle_stop_tick+0x52c/0x680 kernel/time/tick-sched.c:988 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 rest_init+0xe4/0xeb init/main.c:632 arch_call_rest_init+0x13/0x2b start_kernel+0xcc2/0xceb init/main.c:971 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:242 read to 0xffffffff85d056d0 of 4 bytes by task 0 on cpu 1: tick_nohz_stop_tick kernel/time/tick-sched.c:774 [inline] __tick_nohz_idle_stop_tick kernel/time/tick-sched.c:967 [inline] tick_nohz_idle_stop_tick+0x191/0x680 kernel/time/tick-sched.c:988 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+0x164/0x1b0 arch/x86/kernel/smpboot.c:264 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 5.6.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================