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BUG: KCSAN: data-race in print_cpu / tick_nohz_idle_enter

read-write to 0xffff888237d1b3b0 of 8 bytes by task 0 on cpu 1:
 tick_sched_flag_set kernel/time/tick-sched.c:194 [inline]
 tick_nohz_idle_enter+0x59/0xe0 kernel/time/tick-sched.c:1263
 do_idle+0x3d/0x240 kernel/sched/idle.c:271
 cpu_startup_entry+0x25/0x30 kernel/sched/idle.c:423
 start_secondary+0x95/0xa0 arch/x86/kernel/smpboot.c:315
 common_startup_64+0x13e/0x147

read to 0xffff888237d1b3b0 of 8 bytes by task 23481 on cpu 0:
 print_cpu+0x463/0x680 kernel/time/timer_list.c:158
 timer_list_show+0x107/0x170 kernel/time/timer_list.c:295
 traverse+0x141/0x3a0 fs/seq_file.c:111
 seq_read_iter+0x853/0x940 fs/seq_file.c:195
 proc_reg_read_iter+0x10d/0x180 fs/proc/inode.c:299
 new_sync_read fs/read_write.c:489 [inline]
 vfs_read+0x5cd/0x6f0 fs/read_write.c:570
 ksys_pread64 fs/read_write.c:761 [inline]
 __do_sys_pread64 fs/read_write.c:769 [inline]
 __se_sys_pread64 fs/read_write.c:766 [inline]
 __x64_sys_pread64+0xfd/0x150 fs/read_write.c:766
 x64_sys_call+0x296d/0x2fb0 arch/x86/include/generated/asm/syscalls_64.h:18
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd0/0x1a0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x0000000000000030 -> 0x0000000000000035

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 0 PID: 23481 Comm: syz.2.6318 Not tainted 6.15.0-rc7-syzkaller-00014-gd608703fcdd9 #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
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