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BUG: KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add

write to 0xffff888237d279a8 of 1 bytes by task 9501 on cpu 1:
 pagevec_reinit include/linux/pagevec.h:57 [inline]
 __pagevec_lru_add+0x2f5/0x320 mm/swap.c:1065
 folio_add_lru+0x112/0x160 mm/swap.c:467
 lru_cache_add+0x3b/0xe0 mm/folio-compat.c:109
 lru_cache_add_inactive_or_unevictable+0x44/0x60 mm/swap.c:488
 wp_page_copy+0x795/0x12a0 mm/memory.c:3076
 do_wp_page+0x641/0xd00
 handle_pte_fault mm/memory.c:4645 [inline]
 __handle_mm_fault mm/memory.c:4763 [inline]
 handle_mm_fault+0x897/0xa40 mm/memory.c:4861
 do_user_addr_fault+0x4cd/0x940 arch/x86/mm/fault.c:1397
 handle_page_fault arch/x86/mm/fault.c:1484 [inline]
 exc_page_fault+0x60/0x160 arch/x86/mm/fault.c:1540
 asm_exc_page_fault+0x1e/0x30

read to 0xffff888237d279a8 of 1 bytes by task 9499 on cpu 0:
 pagevec_count include/linux/pagevec.h:62 [inline]
 __lru_add_drain_all+0x118/0x3e0 mm/swap.c:826
 lru_add_drain_all+0xc/0x10 mm/swap.c:849
 memfd_wait_for_pins+0x11a/0x560 mm/memfd.c:91
 memfd_add_seals mm/memfd.c:215 [inline]
 memfd_fcntl+0x398/0x420 mm/memfd.c:247
 do_fcntl+0x4da/0xd60 fs/fcntl.c:414
 __do_sys_fcntl fs/fcntl.c:454 [inline]
 __se_sys_fcntl+0xc6/0x180 fs/fcntl.c:439
 __x64_sys_fcntl+0x3f/0x50 fs/fcntl.c:439
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0x0f -> 0x05

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 9499 Comm: syz-executor.4 Not tainted 5.18.0-rc5-syzkaller-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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