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BUG: KCSAN: data-race in hrtimer_interrupt / print_cpu

read-write to 0xffff888237d1b294 of 4 bytes by interrupt on cpu 1:
 hrtimer_interrupt+0x70/0x460 kernel/time/hrtimer.c:1881
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1041 [inline]
 __sysvec_apic_timer_interrupt+0x5f/0x1d0 arch/x86/kernel/apic/apic.c:1058
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline]
 sysvec_apic_timer_interrupt+0x6f/0x80 arch/x86/kernel/apic/apic.c:1052
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
 finish_task_switch+0xb6/0x2b0 kernel/sched/core.c:5193
 context_switch kernel/sched/core.c:5328 [inline]
 __schedule+0x6b9/0xb30 kernel/sched/core.c:6929
 __schedule_loop kernel/sched/core.c:7011 [inline]
 schedule+0x5f/0xd0 kernel/sched/core.c:7026
 schedule_timeout+0x53/0x170 kernel/time/sleep_timeout.c:75
 __skb_wait_for_more_packets+0x1fb/0x300 net/core/datagram.c:123
 __skb_recv_datagram net/core/datagram.c:305 [inline]
 skb_recv_datagram+0xe9/0x140 net/core/datagram.c:317
 isotp_recvmsg+0xa6/0x390 net/can/isotp.c:1143
 sock_recvmsg_nosec net/socket.c:1078 [inline]
 sock_recvmsg+0x136/0x170 net/socket.c:1100
 __sys_recvfrom+0x122/0x1f0 net/socket.c:2294
 __do_sys_recvfrom net/socket.c:2309 [inline]
 __se_sys_recvfrom net/socket.c:2305 [inline]
 __x64_sys_recvfrom+0x76/0x90 net/socket.c:2305
 x64_sys_call+0x2f2f/0x3000 arch/x86/include/generated/asm/syscalls_64.h:46
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd2/0x200 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffff888237d1b294 of 4 bytes by task 7419 on cpu 0:
 print_cpu+0x338/0x660 kernel/time/timer_list.c:133
 timer_list_show+0x107/0x170 kernel/time/timer_list.c:293
 seq_read_iter+0x636/0x950 fs/seq_file.c:272
 proc_reg_read_iter+0x10d/0x180 fs/proc/inode.c:299
 copy_splice_read+0x43f/0x660 fs/splice.c:363
 do_splice_read fs/splice.c:982 [inline]
 splice_direct_to_actor+0x26c/0x680 fs/splice.c:1086
 do_splice_direct_actor fs/splice.c:1204 [inline]
 do_splice_direct+0xda/0x150 fs/splice.c:1230
 do_sendfile+0x380/0x650 fs/read_write.c:1370
 __do_sys_sendfile64 fs/read_write.c:1431 [inline]
 __se_sys_sendfile64 fs/read_write.c:1417 [inline]
 __x64_sys_sendfile64+0x105/0x150 fs/read_write.c:1417
 x64_sys_call+0x2bb4/0x3000 arch/x86/include/generated/asm/syscalls_64.h:41
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd2/0x200 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x00070985 -> 0x00070986

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 0 PID: 7419 Comm: syz.0.1303 Not tainted syzkaller #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
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