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BUG: KCSAN: data-race in drain_all_stock / try_charge_memcg

write to 0xffff888237c2a690 of 4 bytes by task 16363 on cpu 0:
 consume_stock mm/memcontrol.c:2322 [inline]
 try_charge_memcg+0xb46/0xd20 mm/memcontrol.c:2743
 try_charge mm/memcontrol.c:2930 [inline]
 charge_memcg mm/memcontrol.c:7276 [inline]
 __mem_cgroup_charge+0x63/0xf0 mm/memcontrol.c:7291
 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 16327 on cpu 1:
 drain_all_stock+0xd3/0x2e0 mm/memcontrol.c:2430
 try_charge_memcg+0x6c2/0xd20 mm/memcontrol.c:2790
 obj_cgroup_charge_pages+0xbd/0x1c0 mm/memcontrol.c:3301
 __memcg_kmem_charge_page+0x9c/0x170 mm/memcontrol.c:3327
 __alloc_pages+0x1bb/0x340 mm/page_alloc.c:4584
 __alloc_pages_node include/linux/gfp.h:238 [inline]
 alloc_pages_node include/linux/gfp.h:261 [inline]
 bpf_ringbuf_area_alloc kernel/bpf/ringbuf.c:122 [inline]
 bpf_ringbuf_alloc+0xba/0x2f0 kernel/bpf/ringbuf.c:170
 ringbuf_map_alloc+0x167/0x1d0 kernel/bpf/ringbuf.c:204
 map_create+0x713/0xa40 kernel/bpf/syscall.c:1237
 __sys_bpf+0x62a/0x780 kernel/bpf/syscall.c:5439
 __do_sys_bpf kernel/bpf/syscall.c:5561 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5559 [inline]
 __x64_sys_bpf+0x43/0x50 kernel/bpf/syscall.c:5559
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1d0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

value changed: 0x00000003 -> 0x00000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 16327 Comm: syz-executor.3 Not tainted 6.8.0-rc4-syzkaller-00331-gc1ca10ceffbb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
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