================================================================== BUG: KCSAN: data-race in lruvec_lru_size / mem_cgroup_update_lru_size write to 0xffff8880b538aa00 of 8 bytes by task 22205 on cpu 0: mem_cgroup_update_lru_size+0x79/0x110 mm/memcontrol.c:1277 update_lru_size include/linux/mm_inline.h:43 [inline] move_pages_to_lru+0x36a/0xa40 mm/vmscan.c:1868 shrink_active_list+0x64f/0xa90 mm/vmscan.c:2095 shrink_list mm/vmscan.c:2172 [inline] shrink_lruvec+0x71b/0xd20 mm/vmscan.c:2496 shrink_node_memcgs mm/vmscan.c:2685 [inline] shrink_node+0x2fe/0xfe0 mm/vmscan.c:2791 shrink_zones mm/vmscan.c:2996 [inline] do_try_to_free_pages+0x245/0xb60 mm/vmscan.c:3049 try_to_free_mem_cgroup_pages+0x205/0x4d0 mm/vmscan.c:3371 reclaim_high.constprop.0+0xf7/0x140 mm/memcontrol.c:2232 mem_cgroup_handle_over_high+0x96/0x180 mm/memcontrol.c:2313 tracehook_notify_resume include/linux/tracehook.h:197 [inline] exit_to_usermode_loop+0x20c/0x2c0 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline] syscall_return_slowpath+0x231/0x250 arch/x86/entry/common.c:278 ret_from_fork+0x15/0x30 arch/x86/entry/entry_64.S:344 read to 0xffff8880b538aa00 of 8 bytes by task 17672 on cpu 1: mem_cgroup_get_zone_lru_size include/linux/memcontrol.h:536 [inline] lruvec_lru_size+0xe6/0x1a0 mm/vmscan.c:340 get_scan_count mm/vmscan.c:2363 [inline] shrink_lruvec+0x170/0xd20 mm/vmscan.c:2466 shrink_node_memcgs mm/vmscan.c:2685 [inline] shrink_node+0x2fe/0xfe0 mm/vmscan.c:2791 shrink_zones mm/vmscan.c:2996 [inline] do_try_to_free_pages+0x245/0xb60 mm/vmscan.c:3049 try_to_free_mem_cgroup_pages+0x205/0x4d0 mm/vmscan.c:3371 reclaim_high.constprop.0+0xf7/0x140 mm/memcontrol.c:2232 mem_cgroup_handle_over_high+0x96/0x180 mm/memcontrol.c:2313 tracehook_notify_resume include/linux/tracehook.h:197 [inline] exit_to_usermode_loop+0x20c/0x2c0 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline] syscall_return_slowpath arch/x86/entry/common.c:278 [inline] do_syscall_64+0x384/0x3a0 arch/x86/entry/common.c:304 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 17672 Comm: syz-executor.0 Not tainted 5.5.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================