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BUG: KCSAN: data-race in __lru_cache_add / lru_add_drain_all

write to 0xffff88812c129c40 of 1 bytes by task 25171 on cpu 1:
 pagevec_add include/linux/pagevec.h:81 [inline]
 __lru_cache_add+0xb8/0x1c0 mm/swap.c:410
 lru_cache_add+0x1b/0x30 mm/swap.c:447
 putback_lru_page+0x32/0x160 mm/vmscan.c:970
 __unmap_and_move mm/migrate.c:1156 [inline]
 unmap_and_move mm/migrate.c:1206 [inline]
 migrate_pages+0x6ac/0x1b60 mm/migrate.c:1454
 do_mbind+0x8df/0x9f0 mm/mempolicy.c:1374
 kernel_mbind+0x10e/0x130 mm/mempolicy.c:1495
 __do_sys_mbind mm/mempolicy.c:1502 [inline]
 __se_sys_mbind mm/mempolicy.c:1498 [inline]
 __x64_sys_mbind+0x7e/0xa0 mm/mempolicy.c:1498
 do_syscall_64+0xc7/0x3b0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

read to 0xffff88812c129c40 of 1 bytes by task 25178 on cpu 0:
 lru_add_drain_all+0x169/0x3a0 mm/swap.c:746
 migrate_prep+0x13/0x20 mm/migrate.c:73
 do_mbind+0x1c1/0x9f0 mm/mempolicy.c:1339
 kernel_mbind+0x10e/0x130 mm/mempolicy.c:1495
 __do_sys_mbind mm/mempolicy.c:1502 [inline]
 __se_sys_mbind mm/mempolicy.c:1498 [inline]
 __x64_sys_mbind+0x7e/0xa0 mm/mempolicy.c:1498
 do_syscall_64+0xc7/0x3b0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 25178 Comm: syz-executor.0 Not tainted 5.7.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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