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BUG: KCSAN: data-race in __cgroup_account_cputime / cgroup_rstat_flush_locked

read-write to 0xffffe8ffffd70928 of 8 bytes by interrupt on cpu 1:
 __cgroup_account_cputime+0x44/0xa0 kernel/cgroup/rstat.c:415
 cgroup_account_cputime include/linux/cgroup.h:724 [inline]
 update_curr+0xf8/0x250 kernel/sched/fair.c:930
 enqueue_entity kernel/sched/fair.c:4836 [inline]
 enqueue_task_fair+0x120/0x820 kernel/sched/fair.c:6318
 enqueue_task kernel/sched/core.c:2082 [inline]
 activate_task+0xd8/0x110 kernel/sched/core.c:2112
 ttwu_do_activate+0x5d/0x1c0 kernel/sched/core.c:3735
 ttwu_queue kernel/sched/core.c:3985 [inline]
 try_to_wake_up+0x280/0x5c0 kernel/sched/core.c:4307
 hrtimer_wakeup+0x36/0x50 kernel/time/hrtimer.c:1939
 __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
 __tsan_read8+0x0/0x180 kernel/kcsan/core.c:753
 __mark_inode_dirty+0x58/0x7d0 fs/fs-writeback.c:2406
 mark_inode_dirty include/linux/fs.h:2144 [inline]
 generic_write_end+0x18e/0x360 fs/buffer.c:2257
 ext4_da_write_end+0x4df/0x690 fs/ext4/inode.c:3012
 generic_perform_write+0x253/0x3d0 mm/filemap.c:3940
 ext4_buffered_write_iter+0x234/0x3e0 fs/ext4/file.c:289
 ext4_file_write_iter+0xd7/0x10e0
 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

read to 0xffffe8ffffd70928 of 8 bytes by task 2674 on cpu 0:
 cgroup_base_stat_flush kernel/cgroup/rstat.c:373 [inline]
 cgroup_rstat_flush_locked+0x2e1/0x700 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:2915 [inline]
 shrink_node+0x2fa/0x1500 mm/vmscan.c:6500
 shrink_zones mm/vmscan.c:6737 [inline]
 do_try_to_free_pages+0x40d/0xc80 mm/vmscan.c:6799
 try_to_free_mem_cgroup_pages+0x1e2/0x480 mm/vmscan.c:7114
 try_charge_memcg+0x27d/0xd20 mm/memcontrol.c:2724
 try_charge mm/memcontrol.c:2866 [inline]
 mem_cgroup_charge_skmem+0x51/0x1c0 mm/memcontrol.c:7351
 sock_reserve_memory+0xb1/0x370 net/core/sock.c:1025
 sk_setsockopt+0x800/0x1de0 net/core/sock.c:1520
 sock_setsockopt+0x3c/0x50 net/core/sock.c:1546
 __sys_setsockopt+0x177/0x230 net/socket.c:2269
 __do_sys_setsockopt net/socket.c:2284 [inline]
 __se_sys_setsockopt net/socket.c:2281 [inline]
 __x64_sys_setsockopt+0x66/0x80 net/socket.c:2281
 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: 0x0000000c1500ed2c -> 0x0000000c1505ad76

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 2674 Comm: syz-executor.0 Not tainted 6.4.0-rc6-syzkaller-00035-g15adb51c04cc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
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