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BUG: KCSAN: data-race in __lru_add_drain_all / folios_put_refs

write to 0xffff888237c2ab78 of 1 bytes by task 18007 on cpu 0:
 folio_batch_reinit include/linux/pagevec.h:50 [inline]
 folios_put_refs+0x266/0x2b0 mm/swap.c:1033
 folios_put include/linux/mm.h:1549 [inline]
 folio_batch_move_lru+0x202/0x230 mm/swap.c:222
 folio_batch_add_and_move mm/swap.c:231 [inline]
 folio_add_lru+0x13e/0x1f0 mm/swap.c:526
 shmem_alloc_and_add_folio mm/shmem.c:1843 [inline]
 shmem_get_folio_gfp+0x7ec/0xd80 mm/shmem.c:2188
 shmem_fault+0x100/0x260 mm/shmem.c:2388
 __do_fault+0xb6/0x200 mm/memory.c:4655
 do_read_fault mm/memory.c:5061 [inline]
 do_fault mm/memory.c:5191 [inline]
 do_pte_missing mm/memory.c:3947 [inline]
 handle_pte_fault mm/memory.c:5521 [inline]
 __handle_mm_fault mm/memory.c:5664 [inline]
 handle_mm_fault+0xe8b/0x2a30 mm/memory.c:5832
 faultin_page mm/gup.c:1194 [inline]
 __get_user_pages+0x499/0x10d0 mm/gup.c:1493
 populate_vma_page_range mm/gup.c:1932 [inline]
 __mm_populate+0x25b/0x3b0 mm/gup.c:2035
 mm_populate include/linux/mm.h:3430 [inline]
 vm_mmap_pgoff+0x1d6/0x290 mm/util.c:593
 ksys_mmap_pgoff+0xd0/0x340 mm/mmap.c:1514
 x64_sys_call+0x1884/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:10
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffff888237c2ab78 of 1 bytes by task 18013 on cpu 1:
 folio_batch_count include/linux/pagevec.h:56 [inline]
 cpu_needs_drain mm/swap.c:818 [inline]
 __lru_add_drain_all+0x12c/0x410 mm/swap.c:912
 lru_cache_disable+0x1f/0x30 mm/swap.c:965
 do_mbind mm/mempolicy.c:1305 [inline]
 kernel_mbind mm/mempolicy.c:1531 [inline]
 __do_sys_mbind mm/mempolicy.c:1605 [inline]
 __se_sys_mbind+0x4df/0x1160 mm/mempolicy.c:1601
 __x64_sys_mbind+0x78/0x90 mm/mempolicy.c:1601
 x64_sys_call+0x2b4d/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:238
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x01 -> 0x00

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 18013 Comm: syz.1.6297 Not tainted 6.11.0-rc6-syzkaller-00026-g88fac17500f4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
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