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BUG: KCSAN: data-race in __cgroup_account_cputime_field / cgroup_rstat_flush_locked

read-write to 0xffffe8ffffc6e960 of 8 bytes by interrupt on cpu 0:
 __cgroup_account_cputime_field+0x98/0x100
 cgroup_account_cputime_field include/linux/cgroup.h:737 [inline]
 task_group_account_field kernel/sched/cputime.c:113 [inline]
 account_system_index_time+0x72/0x80 kernel/sched/cputime.c:176
 update_process_times+0x22/0x110 kernel/time/timer.c:2069
 tick_sched_handle kernel/time/tick-sched.c:243 [inline]
 tick_sched_timer+0x244/0x2c0 kernel/time/tick-sched.c:1481
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x217/0x700 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x20d/0x7b0 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
 __sysvec_apic_timer_interrupt+0x73/0x210 arch/x86/kernel/apic/apic.c:1112
 sysvec_apic_timer_interrupt+0x68/0x80 arch/x86/kernel/apic/apic.c:1106
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
 kcsan_setup_watchpoint+0x3fe/0x410 kernel/kcsan/core.c:705
 folio_test_anon include/linux/page-flags.h:644 [inline]
 copy_present_pte mm/memory.c:932 [inline]
 copy_pte_range mm/memory.c:1064 [inline]
 copy_pmd_range mm/memory.c:1150 [inline]
 copy_pud_range mm/memory.c:1187 [inline]
 copy_p4d_range mm/memory.c:1211 [inline]
 copy_page_range+0xa6e/0x2020 mm/memory.c:1309
 dup_mmap kernel/fork.c:760 [inline]
 dup_mm kernel/fork.c:1692 [inline]
 copy_mm+0x95b/0xf80 kernel/fork.c:1741
 copy_process+0x1008/0x21b0 kernel/fork.c:2507
 kernel_clone+0x169/0x560 kernel/fork.c:2918
 __do_sys_clone kernel/fork.c:3061 [inline]
 __se_sys_clone kernel/fork.c:3045 [inline]
 __x64_sys_clone+0xe8/0x120 kernel/fork.c:3045
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

read to 0xffffe8ffffc6e960 of 8 bytes by task 26025 on cpu 1:
 cgroup_base_stat_flush kernel/cgroup/rstat.c:373 [inline]
 cgroup_rstat_flush_locked+0x2c3/0x700 kernel/cgroup/rstat.c:199
 cgroup_rstat_flush+0x2b/0x40 kernel/cgroup/rstat.c:239
 do_flush_stats mm/memcontrol.c:658 [inline]
 mem_cgroup_flush_stats+0x9f/0xd0 mm/memcontrol.c:672
 prepare_scan_count mm/vmscan.c:2914 [inline]
 shrink_node+0x2fa/0x1500 mm/vmscan.c:6499
 shrink_zones mm/vmscan.c:6736 [inline]
 do_try_to_free_pages+0x40d/0xc80 mm/vmscan.c:6798
 try_to_free_mem_cgroup_pages+0x1e2/0x480 mm/vmscan.c:7113
 memory_high_write+0x136/0x1d0 mm/memcontrol.c:6541
 cgroup_file_write+0x16b/0x310 kernel/cgroup/cgroup.c:4071
 kernfs_fop_write_iter+0x1ca/0x2b0 fs/kernfs/file.c:334
 call_write_iter include/linux/fs.h:1868 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x47b/0x780 fs/read_write.c:584
 ksys_write+0xeb/0x1a0 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __x64_sys_write+0x42/0x50 fs/read_write.c:646
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0x000000066a732d33 -> 0x000000066b0bc3b3

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 26025 Comm: syz-executor.3 Not tainted 6.3.0-syzkaller-13466-gfc4354c6e5c2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
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