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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+0x1bd/0x230 kernel/time/hrtimer.c:866
 hrtimer_update_softirq_timer+0x1e0/0x1f0 kernel/time/hrtimer.c:1209
 hrtimer_run_softirq+0xf8/0x120 kernel/time/hrtimer.c:1769
 __do_softirq+0xc1/0x265 kernel/softirq.c:571
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x57/0xa0 kernel/softirq.c:650
 sysvec_apic_timer_interrupt+0x6d/0x80 arch/x86/kernel/apic/apic.c:1107
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
 vsnprintf+0xad/0xe20
 add_uevent_var+0xf0/0x1c0 lib/kobject_uevent.c:665
 kobject_uevent_env+0x1d7/0x5b0 lib/kobject_uevent.c:536
 kobject_synth_uevent+0x6a5/0x7d0 lib/kobject_uevent.c:208
 uevent_store+0x24/0x60 drivers/base/core.c:2615
 dev_attr_store+0x44/0x60 drivers/base/core.c:2317
 sysfs_kf_write+0xaa/0xc0 fs/sysfs/file.c:136
 kernfs_fop_write_iter+0x1ca/0x2b0 fs/kernfs/file.c:334
 call_write_iter include/linux/fs.h:1851 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x463/0x760 fs/read_write.c:584
 ksys_write+0xeb/0x1a0 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __x64_sys_write+0x42/0x50 fs/read_write.c:646
 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

read to 0xffff888237d1ed60 of 8 bytes by task 23083 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+0x2bc/0x8f0 fs/seq_file.c:230
 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:956
 do_splice_direct+0x104/0x180 fs/splice.c:1065
 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: 0x000001261be5ca47 -> 0x000001261be26a88

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 23083 Comm: syz-executor.0 Not tainted 6.3.0-rc7-syzkaller-00089-gcb0856346a60 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
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