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BUG: KCSAN: data-race in clockevents_program_event / print_tickdevice

write to 0xffff888237c1aed8 of 8 bytes by task 28829 on cpu 0:
 clockevents_program_event+0x30/0x1e0 kernel/time/clockevents.c:313
 tick_program_event+0x84/0xd0 kernel/time/tick-oneshot.c:44
 __hrtimer_reprogram kernel/time/hrtimer.c:681 [inline]
 hrtimer_force_reprogram kernel/time/hrtimer.c:699 [inline]
 __remove_hrtimer kernel/time/hrtimer.c:1128 [inline]
 remove_hrtimer+0x577/0x640 kernel/time/hrtimer.c:1165
 hrtimer_try_to_cancel+0x1ab/0x1f0 kernel/time/hrtimer.c:1334
 hrtimer_cancel+0x12/0x50 kernel/time/hrtimer.c:1443
 perf_swevent_cancel_hrtimer kernel/events/core.c:10629 [inline]
 cpu_clock_event_stop kernel/events/core.c:10680 [inline]
 cpu_clock_event_del+0x63/0x90 kernel/events/core.c:10695
 event_sched_out+0x1a4/0x9c0 kernel/events/core.c:2265
 group_sched_out+0xdb/0x1d0 kernel/events/core.c:2299
 ctx_sched_out+0x2b9/0x310 kernel/events/core.c:3262
 task_ctx_sched_out kernel/events/core.c:2637 [inline]
 perf_event_context_sched_out kernel/events/core.c:3467 [inline]
 __perf_event_task_sched_out+0x63e/0xf00 kernel/events/core.c:3570
 prepare_task_switch kernel/sched/core.c:4956 [inline]
 context_switch kernel/sched/core.c:5098 [inline]
 __schedule+0x43c/0x6c0 kernel/sched/core.c:6458
 preempt_schedule_common kernel/sched/core.c:6623 [inline]
 __cond_resched+0x3f/0xa0 kernel/sched/core.c:8230
 _cond_resched include/linux/sched.h:2044 [inline]
 tlb_batch_pages_flush mm/mmu_gather.c:62 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:255 [inline]
 tlb_flush_mmu+0x5c9/0x640 mm/mmu_gather.c:262
 tlb_finish_mmu+0x86/0x100 mm/mmu_gather.c:353
 exit_mmap+0x136/0x380 mm/mmap.c:3164
 __mmput+0x27/0x1b0 kernel/fork.c:1187
 mmput+0x3d/0x50 kernel/fork.c:1208
 copy_process+0x19a4/0x20b0 kernel/fork.c:2502
 kernel_clone+0x163/0x5c0 kernel/fork.c:2655
 __do_sys_clone3 kernel/fork.c:2947 [inline]
 __se_sys_clone3 kernel/fork.c:2931 [inline]
 __x64_sys_clone3+0x1e0/0x1f0 kernel/fork.c:2931
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x46/0xb0

read to 0xffff888237c1aed8 of 8 bytes by task 28836 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+0x676/0x8e0 fs/seq_file.c:272
 proc_reg_read_iter+0xfa/0x170 fs/proc/inode.c:300
 call_read_iter include/linux/fs.h:2052 [inline]
 generic_file_splice_read+0x1de/0x2c0 fs/splice.c:311
 do_splice_to fs/splice.c:796 [inline]
 splice_direct_to_actor+0x2ac/0x660 fs/splice.c:870
 do_splice_direct+0xfb/0x180 fs/splice.c:979
 do_sendfile+0x3ad/0x900 fs/read_write.c:1262
 __do_sys_sendfile64 fs/read_write.c:1327 [inline]
 __se_sys_sendfile64 fs/read_write.c:1313 [inline]
 __x64_sys_sendfile64+0x10c/0x150 fs/read_write.c:1313
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x46/0xb0

value changed: 0x00000061f26cdafe -> 0x00000061f273780f

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 28836 Comm: syz-executor.4 Not tainted 5.19.0-rc4-syzkaller-00036-gd9b2ba67917c-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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