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BUG: KCSAN: data-race in hrtimer_interrupt / print_cpu

write to 0xffff888237c1b2a0 of 8 bytes by interrupt on cpu 0:
 hrtimer_interrupt+0x193/0x460 kernel/time/hrtimer.c:1895
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1041 [inline]
 __sysvec_apic_timer_interrupt+0x5c/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
 lru_gen_inc_refs mm/swap.c:398 [inline]
 folio_mark_accessed+0x10b/0x3d0 mm/swap.c:460
 follow_page_pte+0x572/0x6f0 mm/gup.c:886
 follow_pmd_mask mm/gup.c:915 [inline]
 follow_pud_mask mm/gup.c:967 [inline]
 follow_p4d_mask mm/gup.c:984 [inline]
 follow_page_mask mm/gup.c:1023 [inline]
 __get_user_pages+0x7c4/0x1ed0 mm/gup.c:1426
 __get_user_pages_locked mm/gup.c:1692 [inline]
 __gup_longterm_locked+0x8ef/0xe60 mm/gup.c:2476
 pin_user_pages_remote+0x7e/0xb0 mm/gup.c:3363
 process_vm_rw_single_vec mm/process_vm_access.c:106 [inline]
 process_vm_rw_core mm/process_vm_access.c:216 [inline]
 process_vm_rw+0x484/0x960 mm/process_vm_access.c:284
 __do_sys_process_vm_writev mm/process_vm_access.c:304 [inline]
 __se_sys_process_vm_writev mm/process_vm_access.c:299 [inline]
 __x64_sys_process_vm_writev+0x78/0x90 mm/process_vm_access.c:299
 x64_sys_call+0x2a80/0x3000 arch/x86/include/generated/asm/syscalls_64.h:312
 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 0xffff888237c1b2a0 of 8 bytes by task 5630 on cpu 1:
 print_cpu+0x2ea/0x660 kernel/time/timer_list.c:131
 timer_list_show+0x107/0x170 kernel/time/timer_list.c:293
 seq_read_iter+0x31e/0x950 fs/seq_file.c:230
 proc_reg_read_iter+0x110/0x180 fs/proc/inode.c:299
 io_iter_do_read io_uring/rw.c:830 [inline]
 __io_read+0x43f/0xc30 io_uring/rw.c:947
 io_read+0x4a/0x180 io_uring/rw.c:1027
 __io_issue_sqe+0xfe/0x2e0 io_uring/io_uring.c:1824
 io_issue_sqe+0x56/0xa80 io_uring/io_uring.c:1847
 io_queue_sqe io_uring/io_uring.c:2074 [inline]
 io_submit_sqe io_uring/io_uring.c:2334 [inline]
 io_submit_sqes+0x675/0x1060 io_uring/io_uring.c:2447
 __do_sys_io_uring_enter io_uring/io_uring.c:3514 [inline]
 __se_sys_io_uring_enter+0x1c1/0x1b70 io_uring/io_uring.c:3453
 __x64_sys_io_uring_enter+0x78/0x90 io_uring/io_uring.c:3453
 x64_sys_call+0x2df0/0x3000 arch/x86/include/generated/asm/syscalls_64.h:427
 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: 0x0000001447f466a0 -> 0x0000001447f529f0

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 5630 Comm: syz.3.552 Not tainted syzkaller #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
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