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BUG: KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64

read-write to 0xffffffff860079c0 of 8 bytes by interrupt on cpu 0:
 tick_do_update_jiffies64+0x112/0x1b0 kernel/time/tick-sched.c:118
 tick_sched_do_timer kernel/time/tick-sched.c:232 [inline]
 tick_nohz_handler+0x7c/0x2d0 kernel/time/tick-sched.c:290
 __run_hrtimer kernel/time/hrtimer.c:1687 [inline]
 __hrtimer_run_queues+0x20d/0x5e0 kernel/time/hrtimer.c:1751
 hrtimer_interrupt+0x210/0x7b0 kernel/time/hrtimer.c:1813
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x5c/0x1a0 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x6e/0x80 arch/x86/kernel/apic/apic.c:1043
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
 get_current arch/x86/include/asm/current.h:49 [inline]
 __sanitizer_cov_trace_pc+0x11/0x70 kernel/kcov.c:206
 batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:409 [inline]
 batadv_nc_worker+0x36a/0xac0 net/batman-adv/network-coding.c:719
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3312
 worker_thread+0x526/0x730 kernel/workqueue.c:3393
 kthread+0x1d1/0x210 kernel/kthread.c:389
 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

read to 0xffffffff860079c0 of 8 bytes by task 7162 on cpu 1:
 mem_cgroup_flush_stats_ratelimited+0x29/0x100 mm/memcontrol.c:906
 count_shadow_nodes+0x6b/0x230 mm/workingset.c:685
 do_shrink_slab+0x5a/0x690 mm/shrinker.c:382
 shrink_slab_memcg mm/shrinker.c:548 [inline]
 shrink_slab+0x4ed/0x860 mm/shrinker.c:626
 shrink_node_memcgs mm/vmscan.c:5891 [inline]
 shrink_node+0xa0d/0x13c0 mm/vmscan.c:5924
 shrink_zones mm/vmscan.c:6168 [inline]
 do_try_to_free_pages+0x3c6/0xc50 mm/vmscan.c:6230
 try_to_free_mem_cgroup_pages+0x1eb/0x4e0 mm/vmscan.c:6545
 try_charge_memcg+0x27a/0xcd0 mm/memcontrol.c:2944