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BUG: KCSAN: data-race in __do_munmap / acct_account_cputime

write to 0xffff8881507e7cc8 of 8 bytes by task 15969 on cpu 0:
 vm_stat_account mm/mmap.c:3382 [inline]
 remove_vma_list mm/mmap.c:2652 [inline]
 __do_munmap+0xfa4/0x1340 mm/mmap.c:2909
 do_munmap mm/mmap.c:2917 [inline]
 munmap_vma_range mm/mmap.c:598 [inline]
 mmap_region+0x58a/0x13e0 mm/mmap.c:1750
 do_mmap+0x77d/0xc90 mm/mmap.c:1581
 vm_mmap_pgoff+0xfc/0x1d0 mm/util.c:519
 ksys_mmap_pgoff+0x2a8/0x380 mm/mmap.c:1632
 do_syscall_64+0x34/0x50 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff8881507e7cc8 of 8 bytes by interrupt on cpu 1:
 __acct_update_integrals kernel/tsacct.c:140 [inline]
 acct_account_cputime+0x15a/0x1a0 kernel/tsacct.c:164
 update_process_times+0x5c/0x150 kernel/time/timer.c:1794
 tick_sched_handle kernel/time/tick-sched.c:226 [inline]
 tick_sched_timer+0x191/0x210 kernel/time/tick-sched.c:1369
 __run_hrtimer+0x160/0x480 kernel/time/hrtimer.c:1537
 __hrtimer_run_queues kernel/time/hrtimer.c:1601 [inline]
 hrtimer_interrupt+0x380/0xaf0 kernel/time/hrtimer.c:1663
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1089 [inline]
 __sysvec_apic_timer_interrupt+0x6f/0x1c0 arch/x86/kernel/apic/apic.c:1106
 sysvec_apic_timer_interrupt+0x64/0x80 arch/x86/kernel/apic/apic.c:1100
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:632
 dump_stack+0x17d/0x19d arch/x86/include/asm/irqflags.h:45
 fail_dump lib/fault-inject.c:52 [inline]
 should_fail+0x23c/0x250 lib/fault-inject.c:146
 __should_failslab+0x81/0x90 mm/failslab.c:33
 should_failslab+0x5/0x20 mm/slab_common.c:1273
 slab_pre_alloc_hook mm/slab.h:499 [inline]
 kmem_cache_alloc_bulk+0x40/0x380 mm/slab.c:3527
 io_alloc_req fs/io_uring.c:1630 [inline]
 io_submit_sqes+0x515/0xaf0 fs/io_uring.c:6647
 __do_sys_io_uring_enter fs/io_uring.c:9240 [inline]
 __se_sys_io_uring_enter+0x217/0xb20 fs/io_uring.c:9182
 __x64_sys_io_uring_enter+0x74/0x80 fs/io_uring.c:9182
 do_syscall_64+0x34/0x50 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 15967 Comm: syz-executor.1 Tainted: G        W         5.12.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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