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BUG: KCSAN: data-race in drain_all_stock / try_charge_memcg

write to 0xffff888237c2a690 of 4 bytes by task 21771 on cpu 0:
 consume_stock mm/memcontrol.c:2317 [inline]
 try_charge_memcg+0xb46/0xd20 mm/memcontrol.c:2738
 try_charge mm/memcontrol.c:2925 [inline]
 charge_memcg mm/memcontrol.c:7262 [inline]
 __mem_cgroup_charge+0x63/0xf0 mm/memcontrol.c:7277
 mem_cgroup_charge include/linux/memcontrol.h:690 [inline]
 __filemap_add_folio+0x135/0x730 mm/filemap.c:855
 filemap_add_folio+0x70/0x160 mm/filemap.c:938
 __filemap_get_folio+0x2f1/0x5a0 mm/filemap.c:1927
 ext4_da_write_begin+0x2eb/0x550 fs/ext4/inode.c:2885
 generic_perform_write+0x1c9/0x410 mm/filemap.c:3930
 ext4_buffered_write_iter+0x1f6/0x370 fs/ext4/file.c:299
 ext4_file_write_iter+0x297/0xe10
 __kernel_write_iter+0x25f/0x480 fs/read_write.c:523
 dump_emit_page fs/coredump.c:888 [inline]
 dump_user_range+0x25d/0x480 fs/coredump.c:915
 elf_core_dump+0x1a8e/0x1bb0 fs/binfmt_elf.c:2077
 do_coredump+0x102a/0x1890 fs/coredump.c:764
 get_signal+0xdb5/0x10a0 kernel/signal.c:2879
 arch_do_signal_or_restart+0x95/0x4b0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 irqentry_exit_to_user_mode+0x9c/0x130 kernel/entry/common.c:225
 irqentry_exit+0x12/0x40 kernel/entry/common.c:328
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570

read to 0xffff888237c2a690 of 4 bytes by task 21765 on cpu 1:
 drain_all_stock+0xd3/0x2e0 mm/memcontrol.c:2425
 try_charge_memcg+0x6c2/0xd20 mm/memcontrol.c:2785
 try_charge mm/memcontrol.c:2925 [inline]
 charge_memcg mm/memcontrol.c:7262 [inline]
 mem_cgroup_swapin_charge_folio+0x107/0x190 mm/memcontrol.c:7347
 __read_swap_cache_async+0x2b9/0x510 mm/swap_state.c:498
 swap_cluster_readahead+0x276/0x3f0 mm/swap_state.c:662
 swapin_readahead+0xe2/0x7a0 mm/swap_state.c:886
 do_swap_page+0x439/0x1530 mm/memory.c:3898
 handle_pte_fault mm/memory.c:5147 [inline]
 __handle_mm_fault mm/memory.c:5285 [inline]
 handle_mm_fault+0x7f6/0x27c0 mm/memory.c:5450
 do_user_addr_fault arch/x86/mm/fault.c:1364 [inline]
 handle_page_fault arch/x86/mm/fault.c:1507 [inline]
 exc_page_fault+0x401/0x6d0 arch/x86/mm/fault.c:1563
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570

value changed: 0x00000028 -> 0x00000026

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 21765 Comm: syz-executor.1 Not tainted 6.8.0-rc3-syzkaller-00005-g99bd3cb0d12e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
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