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BUG: KCSAN: data-race in hrtimer_reprogram / print_cpu

write to 0xffff888237d1ed60 of 8 bytes by interrupt on cpu 1:
 __hrtimer_reprogram kernel/time/hrtimer.c:659 [inline]
 hrtimer_reprogram+0x1d4/0x240 kernel/time/hrtimer.c:866
 hrtimer_update_softirq_timer+0x1e0/0x1f0 kernel/time/hrtimer.c:1209
 hrtimer_run_softirq+0x118/0x140 kernel/time/hrtimer.c:1769
 __do_softirq+0xe4/0x2b0 kernel/softirq.c:571
 run_ksoftirqd+0x23/0x30 kernel/softirq.c:934
 smpboot_thread_fn+0x2f8/0x490 kernel/smpboot.c:164
 kthread+0x1ac/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

read to 0xffff888237d1ed60 of 8 bytes by task 20689 on cpu 0:
 print_cpu+0x2fb/0x630 kernel/time/timer_list.c:133
 timer_list_show+0x115/0x180 kernel/time/timer_list.c:291
 seq_read_iter+0x612/0x8f0 fs/seq_file.c:272
 proc_reg_read_iter+0x10e/0x180 fs/proc/inode.c:305
 call_read_iter include/linux/fs.h:1845 [inline]
 generic_file_splice_read+0xe3/0x290 fs/splice.c:402
 do_splice_to fs/splice.c:885 [inline]
 splice_direct_to_actor+0x25a/0x5f0 fs/splice.c:957
 do_splice_direct+0x104/0x180 fs/splice.c:1066
 do_sendfile+0x3b8/0x950 fs/read_write.c:1255
 __do_sys_sendfile64 fs/read_write.c:1323 [inline]
 __se_sys_sendfile64 fs/read_write.c:1309 [inline]
 __x64_sys_sendfile64+0x110/0x150 fs/read_write.c:1309
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0x000001c6e9f06c00 -> 0x000001c6e99917e0

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 20689 Comm: syz-executor.5 Not tainted 6.2.0-syzkaller-09238-gd2980d8d8265-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
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