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BUG: KCSAN: data-race in page_counter_charge / page_counter_try_charge

write to 0xffff88821b672150 of 8 bytes by task 19561 on cpu 0:
 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 19584 on cpu 1:
 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
 __add_to_page_cache_locked+0x163/0x780 mm/filemap.c:866
 add_to_page_cache_lru+0xc4/0x260 mm/filemap.c:943
 pagecache_get_page+0x2ac/0x6f0 mm/filemap.c:1682
 grab_cache_page_write_begin+0x5d/0x90 mm/filemap.c:3259
 ext4_da_write_begin+0x1a3/0x840 fs/ext4/inode.c:2965
 generic_perform_write+0x136/0x320 mm/filemap.c:3309
 ext4_buffered_write_iter+0x143/0x290 fs/ext4/file.c:252
 ext4_file_write_iter+0xf4/0xd40 fs/ext4/file.c:547
 call_write_iter include/linux/fs.h:1902 [inline]
 new_sync_write+0x388/0x4a0 fs/read_write.c:483
 __vfs_write+0xb1/0xc0 fs/read_write.c:496
 vfs_write fs/read_write.c:558 [inline]
 vfs_write+0x18a/0x390 fs/read_write.c:542
 ksys_write+0xd5/0x1b0 fs/read_write.c:611
 __do_sys_write fs/read_write.c:623 [inline]
 __se_sys_write fs/read_write.c:620 [inline]
 __x64_sys_write+0x4c/0x60 fs/read_write.c:620
 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: 1 PID: 19584 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
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