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BUG: KCSAN: data-race in hrtimer_interrupt / print_cpu

write to 0xffff88812c11ec10 of 1 bytes by interrupt on cpu 1:
 hrtimer_interrupt+0x1ea/0xa40 kernel/time/hrtimer.c:1630
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline]
 __sysvec_apic_timer_interrupt+0xa3/0x280 arch/x86/kernel/apic/apic.c:1097
 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:711
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline]
 sysvec_apic_timer_interrupt+0x80/0xd0 arch/x86/kernel/apic/apic.c:1091
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:587
 arch_local_irq_restore arch/x86/include/asm/paravirt.h:765 [inline]
 rmqueue_pcplist+0x14c/0x170 mm/page_alloc.c:3352
 rmqueue+0x43/0x10f0 mm/page_alloc.c:3369
 get_page_from_freelist+0x1bc/0x3c0 mm/page_alloc.c:3791
 __alloc_pages_nodemask+0x197/0x390 mm/page_alloc.c:4844
 alloc_pages_current+0x21d/0x310 mm/mempolicy.c:2292
 alloc_pages include/linux/gfp.h:545 [inline]
 push_pipe+0x257/0x360 lib/iov_iter.c:534
 __pipe_get_pages lib/iov_iter.c:1275 [inline]
 pipe_get_pages_alloc lib/iov_iter.c:1382 [inline]
 iov_iter_get_pages_alloc+0x847/0x9e0 lib/iov_iter.c:1400
 default_file_splice_read+0xc3/0x630 fs/splice.c:385
 do_splice_to fs/splice.c:871 [inline]
 splice_direct_to_actor+0x2c7/0x660 fs/splice.c:950
 do_splice_direct+0xf2/0x170 fs/splice.c:1059
 do_sendfile+0x562/0xb10 fs/read_write.c:1521
 __do_sys_sendfile64 fs/read_write.c:1582 [inline]
 __se_sys_sendfile64 fs/read_write.c:1568 [inline]
 __x64_sys_sendfile64+0xf2/0x130 fs/read_write.c:1568
 do_syscall_64+0x51/0xb0 arch/x86/entry/common.c:384
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

read to 0xffff88812c11ec10 of 1 bytes by task 18058 on cpu 0:
 print_cpu+0x4a2/0x7f0 kernel/time/timer_list.c:149
 timer_list_show+0x114/0x180 kernel/time/timer_list.c:311
 seq_read+0x6f9/0x900 fs/seq_file.c:248
 pde_read fs/proc/inode.c:306 [inline]
 proc_reg_read+0x116/0x1a0 fs/proc/inode.c:318
 do_loop_readv_writev fs/read_write.c:715 [inline]
 do_iter_read+0x2fe/0x480 fs/read_write.c:936
 vfs_readv+0xa0/0xe0 fs/read_write.c:1054
 kernel_readv fs/splice.c:355 [inline]
 default_file_splice_read+0x3c6/0x630 fs/splice.c:412
 do_splice_to fs/splice.c:871 [inline]
 splice_direct_to_actor+0x2c7/0x660 fs/splice.c:950
 do_splice_direct+0xf2/0x170 fs/splice.c:1059
 do_sendfile+0x562/0xb10 fs/read_write.c:1521
 __do_sys_sendfile64 fs/read_write.c:1582 [inline]
 __se_sys_sendfile64 fs/read_write.c:1568 [inline]
 __x64_sys_sendfile64+0xf2/0x130 fs/read_write.c:1568
 do_syscall_64+0x51/0xb0 arch/x86/entry/common.c:384
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 18058 Comm: syz-executor.2 Not tainted 5.8.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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