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BUG: KCSAN: data-race in __lru_add_drain_all / folios_put_refs

write to 0xffff888237d25a68 of 1 bytes by task 10414 on cpu 1:
 folios_put_refs+0x25c/0x2d0 mm/swap.c:990
 folios_put include/linux/mm.h:1639 [inline]
 folio_batch_move_lru+0x1fd/0x230 mm/swap.c:175
 __folio_batch_add_and_move mm/swap.c:196 [inline]
 folio_add_lru+0x14a/0x1f0 mm/swap.c:505
 folio_add_lru_vma+0x49/0x70 mm/swap.c:524
 wp_page_copy mm/memory.c:3546 [inline]
 do_wp_page+0x12f6/0x23e0 mm/memory.c:3939
 handle_pte_fault mm/memory.c:6013 [inline]
 __handle_mm_fault mm/memory.c:6140 [inline]
 handle_mm_fault+0x6dc/0x2ae0 mm/memory.c:6309
 do_user_addr_fault+0x3fe/0x1090 arch/x86/mm/fault.c:1388
 handle_page_fault arch/x86/mm/fault.c:1480 [inline]
 exc_page_fault+0x54/0xc0 arch/x86/mm/fault.c:1538
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
 __put_user_4+0xd/0x20 arch/x86/lib/putuser.S:92
 schedule_tail+0x45/0xb0 kernel/sched/core.c:5317
 ret_from_fork+0x24/0x60 arch/x86/kernel/process.c:149
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

read to 0xffff888237d25a68 of 1 bytes by task 10413 on cpu 0:
 folio_batch_count include/linux/pagevec.h:56 [inline]
 cpu_needs_drain mm/swap.c:773 [inline]
 __lru_add_drain_all+0x12b/0x3f0 mm/swap.c:867
 lru_cache_disable+0x1f/0x30 mm/swap.c:920
 do_mbind mm/mempolicy.c:1342 [inline]
 kernel_mbind mm/mempolicy.c:1568 [inline]
 __do_sys_mbind mm/mempolicy.c:1642 [inline]
 __se_sys_mbind+0x496/0xac0 mm/mempolicy.c:1638
 __x64_sys_mbind+0x78/0x90 mm/mempolicy.c:1638
 x64_sys_call+0x14af/0x2fb0 arch/x86/include/generated/asm/syscalls_64.h:238
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd0/0x1a0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x03 -> 0x00

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 0 PID: 10413 Comm: syz.4.3172 Not tainted 6.15.0-rc4-syzkaller-00147-gebd297a2affa #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
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