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BUG: KCSAN: data-race in lru_add_drain_all / pagevec_lru_move_fn

write to 0xffff88812c129b60 of 1 bytes by task 4027 on cpu 1:
 pagevec_reinit include/linux/pagevec.h:63 [inline]
 pagevec_lru_move_fn+0x159/0x170 mm/swap.c:216
 __pagevec_lru_add mm/swap.c:987 [inline]
 lru_add_drain_cpu+0x170/0x2d0 mm/swap.c:599
 lru_add_drain+0x32/0x70 mm/swap.c:694
 __pagevec_release+0x6b/0x80 mm/swap.c:880
 pagevec_release include/linux/pagevec.h:88 [inline]
 shmem_undo_range+0x74b/0x12a0 mm/shmem.c:870
 shmem_truncate_range+0x30/0x70 mm/shmem.c:992
 shmem_evict_inode+0x1a2/0x550 mm/shmem.c:1092
 evict+0x238/0x3f0 fs/inode.c:575
 iput_final fs/inode.c:1571 [inline]
 iput+0x36a/0x4d0 fs/inode.c:1597
 dentry_unlink_inode+0x272/0x2e0 fs/dcache.c:374
 __dentry_kill+0x214/0x3b0 fs/dcache.c:579
 dentry_kill fs/dcache.c:698 [inline]
 dput+0x399/0x700 fs/dcache.c:859
 do_renameat2+0x9f8/0xa50 fs/namei.c:4705
 __do_sys_rename fs/namei.c:4747 [inline]
 __se_sys_rename fs/namei.c:4745 [inline]
 __x64_sys_rename+0x44/0x60 fs/namei.c:4745
 do_syscall_64+0xc7/0x390 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

read to 0xffff88812c129b60 of 1 bytes by task 8170 on cpu 0:
 lru_add_drain_all+0x169/0x3a0 mm/swap.c:746
 invalidate_bdev+0x65/0x90 fs/block_dev.c:97
 ext4_put_super+0x3c8/0x7a0 fs/ext4/super.c:1072
 generic_shutdown_super+0xfa/0x270 fs/super.c:464
 kill_block_super+0x58/0xa0 fs/super.c:1444
 deactivate_locked_super+0x5d/0xb0 fs/super.c:335
 deactivate_super fs/super.c:366 [inline]
 deactivate_super+0xca/0xe0 fs/super.c:362
 cleanup_mnt+0x27a/0x330 fs/namespace.c:1102
 __cleanup_mnt+0x1c/0x30 fs/namespace.c:1109
 task_work_run+0xf5/0x130 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_usermode_loop+0x2ae/0x2c0 arch/x86/entry/common.c:164
 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:278 [inline]
 do_syscall_64+0x36e/0x390 arch/x86/entry/common.c:304
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 8170 Comm: syz-executor.5 Not tainted 5.6.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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