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BUG: KCSAN: data-race in print_cpu / tick_nohz_idle_enter

write to 0xffff888237c1b3f0 of 8 bytes by task 0 on cpu 0:
 tick_nohz_start_idle kernel/time/tick-sched.c:748 [inline]
 tick_nohz_idle_enter+0x89/0xe0 kernel/time/tick-sched.c:1264
 do_idle+0x40/0x230 kernel/sched/idle.c:271
 cpu_startup_entry+0x25/0x30 kernel/sched/idle.c:423
 rest_init+0xef/0xf0 init/main.c:743
 start_kernel+0x58b/0x5f0 init/main.c:1099
 x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:513
 x86_64_start_kernel+0x61/0x70 arch/x86/kernel/head64.c:494
 common_startup_64+0x12c/0x137

read to 0xffff888237c1b3f0 of 8 bytes by task 7079 on cpu 1:
 print_cpu+0x4f9/0x680 kernel/time/timer_list.c:162
 timer_list_show+0x115/0x180 kernel/time/timer_list.c:295
 seq_read_iter+0x661/0x970 fs/seq_file.c:272
 proc_reg_read_iter+0x118/0x190 fs/proc/inode.c:299
 copy_splice_read+0x390/0x5d0 fs/splice.c:363
 do_splice_read fs/splice.c:979 [inline]
 splice_direct_to_actor+0x26c/0x680 fs/splice.c:1083
 do_splice_direct_actor fs/splice.c:1201 [inline]
 do_splice_direct+0xd9/0x150 fs/splice.c:1227
 do_sendfile+0x40a/0x690 fs/read_write.c:1368
 __do_sys_sendfile64 fs/read_write.c:1429 [inline]
 __se_sys_sendfile64 fs/read_write.c:1415 [inline]
 __x64_sys_sendfile64+0x113/0x160 fs/read_write.c:1415
 x64_sys_call+0xfc3/0x2e10 arch/x86/include/generated/asm/syscalls_64.h:41
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x0000001d39bdab9d -> 0x0000001d39be4717

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 7079 Comm: syz.3.1311 Not tainted 6.14.0-syzkaller-09584-g7d06015d936c #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
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