================================================================== BUG: KCSAN: data-race in mem_cgroup_flush_stats_delayed / tick_do_update_jiffies64 read-write to 0xffffffff85a079c0 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:199 [inline] tick_sched_timer+0x7e/0x2d0 kernel/time/tick-sched.c:1473 __run_hrtimer+0x132/0x420 kernel/time/hrtimer.c:1685 __hrtimer_run_queues kernel/time/hrtimer.c:1749 [inline] hrtimer_interrupt+0x36e/0xa70 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0xa3/0x250 arch/x86/kernel/apic/apic.c:1112 sysvec_apic_timer_interrupt+0x88/0xb0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x1b/0x20 check_access kernel/kcsan/core.c:737 [inline] __tsan_unaligned_write8+0x114/0x180 kernel/kcsan/core.c:1014 page_vma_mapped_walk+0x510/0xb90 mm/page_vma_mapped.c:205 folio_referenced_one+0x1c4/0x4f0 mm/rmap.c:820 rmap_walk_file+0x48b/0x5f0 mm/rmap.c:2479 rmap_walk mm/rmap.c:2497 [inline] folio_referenced+0x1a0/0x240 mm/rmap.c:934 shrink_active_list+0x35b/0xc30 mm/vmscan.c:2502 shrink_list mm/vmscan.c:2610 [inline] shrink_lruvec+0x382/0x6d0 mm/vmscan.c:2933 shrink_node_memcgs+0x23e/0x400 mm/vmscan.c:3122 shrink_node+0x8c3/0x10f0 mm/vmscan.c:3245 kswapd_shrink_node mm/vmscan.c:4024 [inline] balance_pgdat+0x704/0xd00 mm/vmscan.c:4215 kswapd+0x200/0x330 mm/vmscan.c:4475 kthread+0x1a9/0x1e0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 read to 0xffffffff85a079c0 of 8 bytes by task 3399 on cpu 1: mem_cgroup_flush_stats_delayed+0x34/0x140 mm/memcontrol.c:655 workingset_refault+0x3c2/0x7b0 mm/workingset.c:358 filemap_add_folio+0xe2/0x150 mm/filemap.c:973 page_cache_ra_unbounded+0x19e/0x2e0 mm/readahead.c:245 do_page_cache_ra mm/readahead.c:293 [inline] page_cache_ra_order+0xd1/0xe0 mm/readahead.c:550 do_sync_mmap_readahead+0x31e/0x370 mm/filemap.c:3056 filemap_fault+0x197/0x740 mm/filemap.c:3148 __do_fault mm/memory.c:4165 [inline] do_read_fault mm/memory.c:4511 [inline] do_fault+0x500/0xb20 mm/memory.c:4640 handle_pte_fault mm/memory.c:4903 [inline] __handle_mm_fault mm/memory.c:5042 [inline] handle_mm_fault+0x889/0xa90 mm/memory.c:5140 do_user_addr_fault+0x4cd/0x940 arch/x86/mm/fault.c:1397 handle_page_fault arch/x86/mm/fault.c:1484 [inline] exc_page_fault+0x60/0x160 arch/x86/mm/fault.c:1540 asm_exc_page_fault+0x27/0x30 value changed: 0x0000000100005ac7 -> 0x0000000100005ac8 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 3399 Comm: udevd Not tainted 5.19.0-rc4-syzkaller-00014-g941e3e791269-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================