================================================================== BUG: KCSAN: data-race in clockevents_program_event / print_tickdevice write to 0xffff888237c17b58 of 8 bytes by task 15527 on cpu 0: clockevents_program_event+0x3e/0x4c0 kernel/time/clockevents.c:313 tick_program_event+0x79/0xc0 kernel/time/tick-oneshot.c:48 __hrtimer_reprogram kernel/time/hrtimer.c:678 [inline] hrtimer_reprogram+0x1d4/0x220 kernel/time/hrtimer.c:861 hrtimer_start_range_ns+0x6b1/0x740 kernel/time/hrtimer.c:1323 hrtimer_start_expires include/linux/hrtimer.h:273 [inline] hrtimer_sleeper_start_expires kernel/time/hrtimer.c:2039 [inline] do_nanosleep+0x79/0x330 kernel/time/hrtimer.c:2113 hrtimer_nanosleep+0x1b8/0x360 kernel/time/hrtimer.c:2163 common_nsleep+0x62/0x80 kernel/time/posix-timers.c:1352 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1398 [inline] __se_sys_clock_nanosleep+0x21a/0x250 kernel/time/posix-timers.c:1375 __x64_sys_clock_nanosleep+0x55/0x70 kernel/time/posix-timers.c:1375 x64_sys_call+0x2734/0x3000 arch/x86/include/generated/asm/syscalls_64.h:231 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xca/0x2b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffff888237c17b58 of 8 bytes by task 15546 on cpu 1: print_tickdevice+0x142/0x340 kernel/time/timer_list.c:206 timer_list_show+0x6c/0x170 kernel/time/timer_list.c:298 seq_read_iter+0x636/0x950 fs/seq_file.c:272 proc_reg_read_iter+0x110/0x180 fs/proc/inode.c:299 copy_splice_read+0x442/0x660 fs/splice.c:363 do_splice_read fs/splice.c:982 [inline] splice_direct_to_actor+0x26f/0x680 fs/splice.c:1086 do_splice_direct_actor fs/splice.c:1204 [inline] do_splice_direct+0xda/0x150 fs/splice.c:1230 do_sendfile+0x380/0x650 fs/read_write.c:1370 __do_sys_sendfile64 fs/read_write.c:1431 [inline] __se_sys_sendfile64 fs/read_write.c:1417 [inline] __x64_sys_sendfile64+0x105/0x150 fs/read_write.c:1417 x64_sys_call+0x2db1/0x3000 arch/x86/include/generated/asm/syscalls_64.h:41 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xca/0x2b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x00000056df16c980 -> 0x00000056df1330e0 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 15546 Comm: syz.5.2744 Not tainted syzkaller #0 PREEMPT(voluntary) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 ==================================================================