loop2: detected capacity change from 0 to 545
EXT4-fs (loop2): VFS: Found ext4 filesystem with invalid superblock checksum.  Run e2fsck?
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BUG: KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add

write to 0xffff888237c22528 of 1 bytes by task 13171 on cpu 0:
 pagevec_reinit include/linux/pagevec.h:56 [inline]
 __pagevec_lru_add+0x211/0x240 mm/swap.c:1057
 lru_cache_add+0x121/0x150 mm/swap.c:453
 putback_lru_page+0x15/0x80 mm/vmscan.c:1219
 __unmap_and_move mm/migrate.c:1097 [inline]
 unmap_and_move mm/migrate.c:1211 [inline]
 migrate_pages+0xe99/0x1570 mm/migrate.c:1488
 do_mbind+0xd81/0xf90 mm/mempolicy.c:1340
 kernel_mbind mm/mempolicy.c:1483 [inline]
 __do_sys_mbind mm/mempolicy.c:1490 [inline]
 __se_sys_mbind+0x113/0x330 mm/mempolicy.c:1486
 __x64_sys_mbind+0x74/0x80 mm/mempolicy.c:1486
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff888237c22528 of 1 bytes by task 13194 on cpu 1:
 pagevec_count include/linux/pagevec.h:61 [inline]
 __lru_add_drain_all+0x12c/0x3e0 mm/swap.c:819
 lru_add_drain_all+0xc/0x10 mm/swap.c:841
 invalidate_bdev+0x56/0x80 block/bdev.c:87
 __loop_clr_fd+0x521/0x850 drivers/block/loop.c:1399
 loop_clr_fd drivers/block/loop.c:1494 [inline]
 lo_ioctl+0xac5/0x13e0 drivers/block/loop.c:1850
 blkdev_ioctl+0x1d0/0x3f0 block/ioctl.c:589
 block_ioctl+0x6e/0x80 block/fops.c:478
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0xcb/0x140 fs/ioctl.c:860
 __x64_sys_ioctl+0x3f/0x50 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0x01 -> 0x00

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 13194 Comm: syz-executor.2 Not tainted 5.15.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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