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BUG: KCSAN: data-race in __do_munmap / acct_account_cputime

write to 0xffff888163b77300 of 8 bytes by task 12441 on cpu 1:
 vm_stat_account mm/mmap.c:3365 [inline]
 remove_vma_list mm/mmap.c:2655 [inline]
 __do_munmap+0xfa4/0x1330 mm/mmap.c:2914
 do_munmap mm/mmap.c:2922 [inline]
 munmap_vma_range mm/mmap.c:604 [inline]
 mmap_region+0x5aa/0x1400 mm/mmap.c:1753
 do_mmap+0x73f/0xc40 mm/mmap.c:1584
 vm_mmap_pgoff+0xf9/0x1d0 mm/util.c:519
 ksys_mmap_pgoff+0x2a8/0x380 mm/mmap.c:1635
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0x90 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff888163b77300 of 8 bytes by interrupt on cpu 0:
 __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:1781
 tick_sched_handle kernel/time/tick-sched.c:226 [inline]
 tick_sched_timer+0x191/0x210 kernel/time/tick-sched.c:1421
 __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:638
 console_unlock+0x8e8/0xb30 kernel/printk/printk.c:2646
 vprintk_emit+0x125/0x3d0 kernel/printk/printk.c:2174
 vprintk_default+0x22/0x30 kernel/printk/printk.c:2185
 vprintk+0x15a/0x170 kernel/printk/printk_safe.c:392
 printk+0x62/0x87 kernel/printk/printk.c:2216
 logfc+0x2e5/0x2f0 fs/fs_context.c:402
 fs_param_bad_value fs/fs_parser.c:194 [inline]
 fs_param_is_u32+0xc3/0xe0 fs/fs_parser.c:217
 __fs_parse+0x351/0x460 fs/fs_parser.c:128
 fs_parse include/linux/fs_parser.h:73 [inline]
 shmem_parse_one+0x4f/0x540 mm/shmem.c:3366
 vfs_parse_fs_param+0x19d/0x310 fs/fs_context.c:146
 vfs_parse_fs_string+0x84/0xc0 fs/fs_context.c:184
 shmem_parse_options+0x112/0x160 mm/shmem.c:3483
 parse_monolithic_mount_data+0x3e/0x50 fs/fs_context.c:667
 do_new_mount fs/namespace.c:2901 [inline]
 path_mount+0x11a1/0x1ce0 fs/namespace.c:3235
 do_mount fs/namespace.c:3248 [inline]
 __do_sys_mount fs/namespace.c:3456 [inline]
 __se_sys_mount+0x23d/0x2e0 fs/namespace.c:3433
 __x64_sys_mount+0x63/0x70 fs/namespace.c:3433
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0x90 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0x0000000000005332 -> 0x0000000000004b32

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 12426 Comm: syz-executor.0 Not tainted 5.14.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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