================================================================== BUG: KCSAN: data-race in page_counter_charge / page_counter_try_charge write to 0xffff88821b672150 of 8 bytes by task 8069 on cpu 1: page_counter_charge+0x80/0xc0 mm/page_counter.c:86 mem_cgroup_migrate+0xb7/0x220 mm/memcontrol.c:6698 migrate_page_states+0x52f/0x930 mm/migrate.c:651 migrate_page_copy+0x288/0x9a0 mm/migrate.c:662 migrate_page+0xf2/0x150 mm/migrate.c:690 move_to_new_page+0xcb/0x3d0 mm/migrate.c:950 __unmap_and_move mm/migrate.c:1116 [inline] unmap_and_move mm/migrate.c:1193 [inline] migrate_pages+0x1331/0x18e0 mm/migrate.c:1423 do_mbind+0x937/0xa40 mm/mempolicy.c:1317 kernel_mbind+0x111/0x130 mm/mempolicy.c:1438 __do_sys_mbind mm/mempolicy.c:1445 [inline] __se_sys_mbind mm/mempolicy.c:1441 [inline] __x64_sys_mbind+0x89/0xb0 mm/mempolicy.c:1441 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff88821b672150 of 8 bytes by task 8074 on cpu 0: page_counter_try_charge+0x58/0x170 mm/page_counter.c:138 try_charge+0x185/0xbf0 mm/memcontrol.c:2405 mem_cgroup_try_charge+0xd2/0x260 mm/memcontrol.c:6404 mem_cgroup_try_charge_delay+0x3a/0x80 mm/memcontrol.c:6419 shmem_getpage_gfp+0x3bf/0x1390 mm/shmem.c:1872 shmem_fault+0x114/0x470 mm/shmem.c:2067 __do_fault+0xae/0x1f0 mm/memory.c:3188 do_read_fault mm/memory.c:3585 [inline] do_fault mm/memory.c:3714 [inline] handle_pte_fault mm/memory.c:3945 [inline] __handle_mm_fault+0x270d/0x2e00 mm/memory.c:4075 handle_mm_fault+0x21b/0x530 mm/memory.c:4112 faultin_page mm/gup.c:640 [inline] __get_user_pages+0x485/0x1130 mm/gup.c:851 populate_vma_page_range+0xe6/0x100 mm/gup.c:1235 __mm_populate+0x168/0x2a0 mm/gup.c:1283 mm_populate include/linux/mm.h:2347 [inline] __do_sys_remap_file_pages mm/mmap.c:2969 [inline] __se_sys_remap_file_pages mm/mmap.c:2879 [inline] __x64_sys_remap_file_pages+0x55e/0x560 mm/mmap.c:2879 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 8074 Comm: syz-executor.2 Not tainted 5.5.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================