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BUG: KCSAN: data-race in hrtimer_interrupt / print_cpu

read-write to 0xffff888237d1ffd4 of 4 bytes by interrupt on cpu 1:
 hrtimer_interrupt+0x72/0x7b0 kernel/time/hrtimer.c:1796
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x5c/0x1a0 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x6e/0x80 arch/x86/kernel/apic/apic.c:1043
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
 __sanitizer_cov_trace_pc+0x0/0x70
 zap_present_folio_ptes mm/memory.c:1480 [inline]
 zap_present_ptes mm/memory.c:1561 [inline]
 zap_pte_range mm/memory.c:1603 [inline]
 zap_pmd_range mm/memory.c:1720 [inline]
 zap_pud_range mm/memory.c:1749 [inline]
 zap_p4d_range mm/memory.c:1770 [inline]
 unmap_page_range+0xaf0/0x22d0 mm/memory.c:1791
 unmap_single_vma+0x142/0x1d0 mm/memory.c:1837
 unmap_vmas+0x18d/0x2b0 mm/memory.c:1881
 exit_mmap+0x1a2/0x6f0 mm/mmap.c:3267
 __mmput+0x28/0x1c0 kernel/fork.c:1345
 mmput+0x4c/0x60 kernel/fork.c:1367
 exit_mm+0xe4/0x190 kernel/exit.c:569
 do_exit+0x57e/0x1740 kernel/exit.c:865
 do_group_exit+0x102/0x150 kernel/exit.c:1027
 get_signal+0xf2f/0x1080 kernel/signal.c:2911
 arch_do_signal_or_restart+0x95/0x4b0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
 syscall_exit_to_user_mode+0x59/0x130 kernel/entry/common.c:212
 do_syscall_64+0xe2/0x1d0 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x6d/0x75

read to 0xffff888237d1ffd4 of 4 bytes by task 593 on cpu 0:
 print_cpu+0x348/0x670 kernel/time/timer_list.c:135
 timer_list_show+0x115/0x180 kernel/time/timer_list.c:295
 seq_read_iter+0x65b/0x940 fs/seq_file.c:272
 proc_reg_read_iter+0x11e/0x190 fs/proc/inode.c:299
 do_iter_readv_writev+0x339/0x3e0
 vfs_readv+0x1e5/0x650 fs/read_write.c:932
 do_preadv fs/read_write.c:1049 [inline]
 __do_sys_preadv fs/read_write.c:1099 [inline]
 __se_sys_preadv fs/read_write.c:1094 [inline]
 __x64_sys_preadv+0x100/0x1c0 fs/read_write.c:1094
 do_syscall_64+0xd3/0x1d0
 entry_SYSCALL_64_after_hwframe+0x6d/0x75

value changed: 0x00312e11 -> 0x00312e12

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 593 Comm: syz-executor.3 Not tainted 6.8.0-syzkaller-12955-g8e938e398669 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
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