================================================================== BUG: KCSAN: data-race in __tmigr_cpu_activate / tmigr_handle_remote write to 0xffff888237d205dc of 1 bytes by task 0 on cpu 1: __tmigr_cpu_activate+0x55/0x200 kernel/time/timer_migration.c:676 tmigr_cpu_activate+0x8a/0xc0 kernel/time/timer_migration.c:699 timer_clear_idle+0x28/0x100 kernel/time/timer.c:2380 tick_nohz_restart_sched_tick+0x22/0x110 kernel/time/tick-sched.c:1096 tick_nohz_idle_update_tick kernel/time/tick-sched.c:1427 [inline] tick_nohz_idle_exit+0xfe/0x1d0 kernel/time/tick-sched.c:1470 do_idle+0x1eb/0x230 kernel/sched/idle.c:338 cpu_startup_entry+0x25/0x30 kernel/sched/idle.c:423 start_secondary+0x96/0xa0 arch/x86/kernel/smpboot.c:314 common_startup_64+0x12c/0x137 read to 0xffff888237d205dc of 1 bytes by interrupt on cpu 0: tmigr_next_groupevt kernel/time/timer_migration.c:567 [inline] tmigr_next_expired_groupevt kernel/time/timer_migration.c:591 [inline] tmigr_handle_remote_up kernel/time/timer_migration.c:1014 [inline] __walk_groups kernel/time/timer_migration.c:533 [inline] tmigr_handle_remote+0x26e/0x940 kernel/time/timer_migration.c:1080 run_timer_softirq+0x5f/0x70 kernel/time/timer.c:2453 handle_softirqs+0xbf/0x280 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0x3a/0xc0 kernel/softirq.c:655 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0x73/0x80 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 console_flush_all+0x56b/0x770 __console_flush_and_unlock kernel/printk/printk.c:3269 [inline] console_unlock+0xab/0x330 kernel/printk/printk.c:3309 vprintk_emit+0x3f4/0x680 kernel/printk/printk.c:2432 vprintk_default+0x26/0x30 kernel/printk/printk.c:2447 vprintk+0x75/0x80 kernel/printk/printk_safe.c:86 _printk+0x7a/0xa0 kernel/printk/printk.c:2457 kauditd_printk_skb kernel/audit.c:546 [inline] kauditd_hold_skb+0x1a3/0x1b0 kernel/audit.c:581 kauditd_send_queue+0x288/0x2e0 kernel/audit.c:766 kauditd_thread+0x42a/0x650 kernel/audit.c:890 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 value changed: 0x00 -> 0x01 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 29 Comm: kauditd Tainted: G W 6.13.0-rc1-syzkaller-00025-gfeffde684ac2 #0 Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 ==================================================================