================================================================== BUG: KCSAN: data-race in clockevents_program_event / print_tickdevice write to 0xffff888237c16f18 of 8 bytes by task 21908 on cpu 0: clockevents_program_event+0x35/0x1e0 kernel/time/clockevents.c:313 tick_program_event+0x78/0xc0 kernel/time/tick-oneshot.c:44 __hrtimer_reprogram kernel/time/hrtimer.c:681 [inline] hrtimer_reprogram+0x1fb/0x240 kernel/time/hrtimer.c:866 hrtimer_start_range_ns+0xf8/0x140 kernel/time/hrtimer.c:1299 hrtimer_start_expires include/linux/hrtimer.h:432 [inline] hrtimer_sleeper_start_expires+0x3a/0x40 kernel/time/hrtimer.c:1965 futex_wait_queue_me+0xed/0x210 kernel/futex.c:2840 futex_wait+0x153/0x440 kernel/futex.c:2954 do_futex+0x9ee/0x2050 kernel/futex.c:3964 __do_sys_futex kernel/futex.c:4041 [inline] __se_sys_futex+0xea/0x3a0 kernel/futex.c:4022 __x64_sys_futex+0x74/0x80 kernel/futex.c:4022 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 read to 0xffff888237c16f18 of 8 bytes by task 22013 on cpu 1: print_tickdevice+0x158/0x370 kernel/time/timer_list.c:204 timer_list_show+0x74/0x180 kernel/time/timer_list.c:296 seq_read_iter+0x60b/0x930 fs/seq_file.c:272 proc_reg_read_iter+0xfc/0x170 fs/proc/inode.c:300 call_read_iter include/linux/fs.h:2157 [inline] generic_file_splice_read+0x24f/0x330 fs/splice.c:311 do_splice_to fs/splice.c:796 [inline] splice_direct_to_actor+0x2aa/0x650 fs/splice.c:870 do_splice_direct+0x106/0x190 fs/splice.c:979 do_sendfile+0x63e/0xbb0 fs/read_write.c:1249 __do_sys_sendfile64 fs/read_write.c:1314 [inline] __se_sys_sendfile64 fs/read_write.c:1300 [inline] __x64_sys_sendfile64+0x102/0x140 fs/read_write.c:1300 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: 0x0000005810cab626 -> 0x0000005810bd3646 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 22013 Comm: syz-executor.0 Not tainted 5.15.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================