================================================================== BUG: KCSAN: data-race in get_cpu_idle_time_us / tick_irq_enter write to 0xffff888237d1df40 of 8 bytes by interrupt on cpu 1: tick_nohz_stop_idle kernel/time/tick-sched.c:648 [inline] tick_nohz_irq_enter kernel/time/tick-sched.c:1377 [inline] tick_irq_enter+0x14a/0x240 kernel/time/tick-sched.c:1403 sysvec_apic_timer_interrupt+0x80/0xb0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline] arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline] acpi_safe_halt drivers/acpi/processor_idle.c:109 [inline] acpi_idle_do_entry drivers/acpi/processor_idle.c:553 [inline] acpi_idle_enter+0x282/0x300 drivers/acpi/processor_idle.c:688 cpuidle_enter_state+0x2b4/0x7d0 drivers/cpuidle/cpuidle.c:237 cpuidle_enter+0x3c/0x60 drivers/cpuidle/cpuidle.c:351 call_cpuidle kernel/sched/idle.c:158 [inline] cpuidle_idle_call kernel/sched/idle.c:239 [inline] do_idle+0x1b2/0x250 kernel/sched/idle.c:306 cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:403 secondary_startup_64_no_verify+0xb1/0xbb read to 0xffff888237d1df40 of 8 bytes by task 16539 on cpu 0: get_cpu_idle_time_us+0x1dd/0x1f0 kernel/time/tick-sched.c:691 get_idle_time fs/proc/stat.c:54 [inline] show_stat+0x8bf/0xdd0 fs/proc/stat.c:175 seq_read_iter+0x2e1/0x930 fs/seq_file.c:230 proc_reg_read_iter+0xd6/0x170 fs/proc/inode.c:296 call_read_iter include/linux/fs.h:2156 [inline] io_iter_do_read fs/io_uring.c:3505 [inline] io_read fs/io_uring.c:3562 [inline] io_issue_sqe+0xa75/0x53b0 fs/io_uring.c:6675 __io_queue_sqe+0x20/0x440 fs/io_uring.c:7022 io_queue_sqe fs/io_uring.c:7064 [inline] io_submit_sqe+0x77a/0x47d3 fs/io_uring.c:7267 io_submit_sqes+0x25d/0x670 fs/io_uring.c:7373 __do_sys_io_uring_enter fs/io_uring.c:10076 [inline] __se_sys_io_uring_enter+0x212/0xb00 fs/io_uring.c:10018 __x64_sys_io_uring_enter+0x74/0x80 fs/io_uring.c:10018 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x0000005fc658c163 -> 0x0000005fc668dc94 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 16539 Comm: syz-executor.3 Not tainted 5.16.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================