================================================================== BUG: KCSAN: data-race in get_cpu_idle_time_us / tick_nohz_idle_enter write to 0xffff888237d1debc of 1 bytes by task 0 on cpu 1: tick_nohz_idle_enter+0x72/0xc0 kernel/time/tick-sched.c:1113 do_idle+0x3d/0x250 kernel/sched/idle.c:280 cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:403 secondary_startup_64_no_verify+0xb1/0xbb read to 0xffff888237d1debc of 1 bytes by task 7214 on cpu 0: get_cpu_idle_time_us+0x6b/0x1f0 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:3462 [inline] io_read fs/io_uring.c:3519 [inline] io_issue_sqe+0xbf6/0x5680 fs/io_uring.c:6628 __io_queue_sqe+0x20/0x450 fs/io_uring.c:6978 io_queue_sqe fs/io_uring.c:7020 [inline] io_submit_sqe+0x77a/0x47d3 fs/io_uring.c:7223 io_submit_sqes+0x25d/0x670 fs/io_uring.c:7329 __do_sys_io_uring_enter fs/io_uring.c:10043 [inline] __se_sys_io_uring_enter+0x212/0xb00 fs/io_uring.c:9985 __x64_sys_io_uring_enter+0x74/0x80 fs/io_uring.c:9985 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x08 -> 0x0d Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 7214 Comm: syz-executor.1 Not tainted 5.15.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================