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BUG: KCSAN: data-race in hrtimer_interrupt / print_cpu

write to 0xffff88812c01fd90 of 1 bytes by interrupt on cpu 0:
 hrtimer_interrupt+0x1a4/0x490 kernel/time/hrtimer.c:1630
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1113 [inline]
 smp_apic_timer_interrupt+0xd8/0x270 arch/x86/kernel/apic/apic.c:1138
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
 __sanitizer_cov_trace_const_cmp8+0x0/0x20 kernel/kcov.c:274
 gfn_to_hva_memslot_prot+0x40/0xa0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1700
 __kvm_read_guest_page+0x32/0xc0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2249
 kvm_vcpu_read_guest_page+0x45/0x60 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2272
 kvm_fetch_guest_virt+0x101/0x150 arch/x86/kvm/x86.c:5440
 __do_insn_fetch_bytes+0x260/0x450 arch/x86/kvm/emulate.c:918
 x86_decode_insn+0xf77/0x2bc0 arch/x86/kvm/emulate.c:5171
 x86_emulate_instruction+0x525/0x11d0 arch/x86/kvm/x86.c:6796
 kvm_mmu_page_fault+0x1c7/0xac0 arch/x86/kvm/mmu/mmu.c:5495
 handle_ept_violation+0x1ce/0x430 arch/x86/kvm/vmx/vmx.c:5196
 vmx_handle_exit+0x1de/0xfe0 arch/x86/kvm/vmx/vmx.c:5980
 vcpu_enter_guest+0xc00/0x3740 arch/x86/kvm/x86.c:8481
 vcpu_run arch/x86/kvm/x86.c:8544 [inline]
 kvm_arch_vcpu_ioctl_run+0x281/0xd60 arch/x86/kvm/x86.c:8766
 kvm_vcpu_ioctl+0x70b/0x9d0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3138
 vfs_ioctl fs/ioctl.c:47 [inline]
 ksys_ioctl+0x101/0x150 fs/ioctl.c:763
 __do_sys_ioctl fs/ioctl.c:772 [inline]
 __se_sys_ioctl fs/ioctl.c:770 [inline]
 __x64_sys_ioctl+0x47/0x60 fs/ioctl.c:770
 do_syscall_64+0xc7/0x3b0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

read to 0xffff88812c01fd90 of 1 bytes by task 14060 on cpu 1:
 print_cpu+0x24f/0x670 kernel/time/timer_list.c:149
 timer_list_show+0xb5/0x140 kernel/time/timer_list.c:311
 seq_read+0x6ed/0x940 fs/seq_file.c:247
 pde_read fs/proc/inode.c:292 [inline]
 proc_reg_read+0x17f/0x1b0 fs/proc/inode.c:304
 do_loop_readv_writev fs/read_write.c:715 [inline]
 do_loop_readv_writev fs/read_write.c:702 [inline]
 do_iter_read+0x33f/0x3a0 fs/read_write.c:936
 vfs_readv+0x9c/0xf0 fs/read_write.c:1054
 do_preadv+0x129/0x1c0 fs/read_write.c:1146
 __do_sys_preadv fs/read_write.c:1196 [inline]
 __se_sys_preadv fs/read_write.c:1191 [inline]
 __x64_sys_preadv+0x5e/0x80 fs/read_write.c:1191
 do_syscall_64+0xc7/0x3b0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 14060 Comm: syz-executor.0 Not tainted 5.7.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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