================================================================== BUG: KCSAN: data-race in lruvec_lru_size / mem_cgroup_update_lru_size write to 0xffff8880b9f16200 of 8 bytes by task 7827 on cpu 1: mem_cgroup_update_lru_size+0x73/0x110 mm/memcontrol.c:1277 update_lru_size include/linux/mm_inline.h:43 [inline] move_pages_to_lru+0x37b/0xa70 mm/vmscan.c:1854 shrink_active_list+0x6b0/0xb30 mm/vmscan.c:2081 shrink_list mm/vmscan.c:2158 [inline] shrink_lruvec+0x71e/0xd20 mm/vmscan.c:2482 shrink_node_memcgs mm/vmscan.c:2671 [inline] shrink_node+0x30a/0x1000 mm/vmscan.c:2777 shrink_zones mm/vmscan.c:2980 [inline] do_try_to_free_pages+0x230/0xb30 mm/vmscan.c:3033 try_to_free_mem_cgroup_pages+0x1f7/0x4b0 mm/vmscan.c:3355 reclaim_high.constprop.0+0xee/0x140 mm/memcontrol.c:2232 mem_cgroup_handle_over_high+0x8f/0x180 mm/memcontrol.c:2313 tracehook_notify_resume include/linux/tracehook.h:197 [inline] exit_to_usermode_loop+0x20a/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+0x36e/0x390 arch/x86/entry/common.c:304 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff8880b9f16200 of 8 bytes by task 18848 on cpu 0: mem_cgroup_get_zone_lru_size include/linux/memcontrol.h:536 [inline] lruvec_lru_size+0xe6/0x1a0 mm/vmscan.c:326 get_scan_count mm/vmscan.c:2349 [inline] shrink_lruvec+0x170/0xd20 mm/vmscan.c:2452 shrink_node_memcgs mm/vmscan.c:2671 [inline] shrink_node+0x30a/0x1000 mm/vmscan.c:2777 shrink_zones mm/vmscan.c:2980 [inline] do_try_to_free_pages+0x230/0xb30 mm/vmscan.c:3033 try_to_free_mem_cgroup_pages+0x1f7/0x4b0 mm/vmscan.c:3355 reclaim_high.constprop.0+0xee/0x140 mm/memcontrol.c:2232 mem_cgroup_handle_over_high+0x8f/0x180 mm/memcontrol.c:2313 tracehook_notify_resume include/linux/tracehook.h:197 [inline] exit_to_usermode_loop+0x20a/0x2c0 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline] syscall_return_slowpath+0x218/0x240 arch/x86/entry/common.c:278 ret_from_fork+0x15/0x30 arch/x86/entry/entry_64.S:344 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 18848 Comm: syz-executor.2 Not tainted 5.6.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================