================================================================== BUG: KCSAN: data-race in cgroup_rstat_flush_locked / cgroup_rstat_updated write to 0xffffe8ffffc19460 of 8 bytes by task 306 on cpu 1: cgroup_rstat_cpu_pop_updated kernel/cgroup/rstat.c:139 [inline] cgroup_rstat_flush_locked+0x282/0x7f0 kernel/cgroup/rstat.c:161 cgroup_rstat_flush_irqsafe+0x24/0x40 kernel/cgroup/rstat.c:218 mem_cgroup_flush_stats mm/memcontrol.c:5354 [inline] flush_memcg_stats_work+0x34/0x60 mm/memcontrol.c:5366 process_one_work+0x402/0x910 kernel/workqueue.c:2297 worker_thread+0x636/0xae0 kernel/workqueue.c:2444 kthread+0x262/0x280 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 read to 0xffffe8ffffc19460 of 8 bytes by task 1793 on cpu 0: cgroup_rstat_updated+0x53/0x1c0 kernel/cgroup/rstat.c:38 __mod_memcg_state mm/memcontrol.c:653 [inline] __mod_memcg_lruvec_state mm/memcontrol.c:681 [inline] __mod_lruvec_state+0x7c/0xe0 mm/memcontrol.c:707 __mod_lruvec_page_state+0xd2/0x120 mm/memcontrol.c:728 page_add_file_rmap+0x4a/0x60 mm/rmap.c:1243 do_set_pte+0x268/0x410 mm/memory.c:3980 filemap_map_pages+0x51d/0x870 mm/filemap.c:3329 do_fault_around mm/memory.c:4151 [inline] do_read_fault mm/memory.c:4166 [inline] do_fault mm/memory.c:4300 [inline] handle_pte_fault mm/memory.c:4558 [inline] __handle_mm_fault mm/memory.c:4693 [inline] handle_mm_fault+0xae0/0x1530 mm/memory.c:4791 do_user_addr_fault+0x609/0xbe0 arch/x86/mm/fault.c:1390 handle_page_fault arch/x86/mm/fault.c:1475 [inline] exc_page_fault+0x91/0x220 arch/x86/mm/fault.c:1531 asm_exc_page_fault+0x1e/0x30 value changed: 0xffff888100aca010 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 1793 Comm: modprobe Not tainted 5.14.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================