BTRFS error (device loop3): superblock checksum mismatch
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BUG: KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru

read to 0xffff88812c02a1d0 of 8 bytes by task 22473 on cpu 1:
 has_bh_in_lru+0x44/0x90 fs/buffer.c:1427
 on_each_cpu_cond_mask+0xa3/0x150 kernel/smp.c:695
 on_each_cpu_cond+0x44/0x60 kernel/smp.c:721
 invalidate_bh_lrus+0x32/0x40 fs/buffer.c:1436
 invalidate_bdev+0x69/0x90 fs/block_dev.c:96
 __loop_clr_fd+0x250/0x740 drivers/block/loop.c:1140
 loop_clr_fd drivers/block/loop.c:1237 [inline]
 lo_ioctl+0x24c/0xc80 drivers/block/loop.c:1606
 __blkdev_driver_ioctl block/ioctl.c:277 [inline]
 blkdev_ioctl+0xbe5/0x1260 block/ioctl.c:582
 block_ioctl+0x95/0xc0 fs/block_dev.c:1983
 vfs_ioctl fs/ioctl.c:47 [inline]
 file_ioctl fs/ioctl.c:545 [inline]
 do_vfs_ioctl+0x84f/0xcf0 fs/ioctl.c:732
 ksys_ioctl+0xbd/0xe0 fs/ioctl.c:749
 __do_sys_ioctl fs/ioctl.c:756 [inline]
 __se_sys_ioctl fs/ioctl.c:754 [inline]
 __x64_sys_ioctl+0x4c/0x60 fs/ioctl.c:754
 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

write to 0xffff88812c02a1d0 of 8 bytes by task 22457 on cpu 0:
 invalidate_bh_lru+0x83/0xf0 fs/buffer.c:1416
 on_each_cpu_mask+0xfb/0x150 kernel/smp.c:649
 on_each_cpu_cond_mask+0xf7/0x150 kernel/smp.c:697
 on_each_cpu_cond+0x44/0x60 kernel/smp.c:721
 invalidate_bh_lrus+0x32/0x40 fs/buffer.c:1436
 invalidate_bdev+0x69/0x90 fs/block_dev.c:96
 btrfs_close_bdev.part.0+0x93/0xa0 fs/btrfs/volumes.c:1058
 btrfs_close_bdev fs/btrfs/volumes.c:1053 [inline]
 btrfs_close_one_device fs/btrfs/volumes.c:1082 [inline]
 close_fs_devices.part.0+0x161/0x510 fs/btrfs/volumes.c:1111
 close_fs_devices fs/btrfs/volumes.c:1143 [inline]
 btrfs_close_devices+0x92/0x170 fs/btrfs/volumes.c:1129
 open_ctree+0x3ec4/0x407c fs/btrfs/disk-io.c:3349
 btrfs_fill_super fs/btrfs/super.c:1213 [inline]
 btrfs_mount_root.cold+0x13/0x19d fs/btrfs/super.c:1561
 legacy_get_tree+0x7e/0xf0 fs/fs_context.c:647
 vfs_get_tree+0x56/0x1a0 fs/super.c:1545
 fc_mount+0x20/0x80 fs/namespace.c:962
 vfs_kern_mount.part.0+0xe6/0xf0 fs/namespace.c:992
 vfs_kern_mount+0x49/0x70 fs/namespace.c:979
 btrfs_mount+0x250/0xf37 fs/btrfs/super.c:1621
 legacy_get_tree+0x7e/0xf0 fs/fs_context.c:647
 vfs_get_tree+0x56/0x1a0 fs/super.c:1545
 do_new_mount fs/namespace.c:2822 [inline]
 do_mount+0x1004/0x14f0 fs/namespace.c:3142
 ksys_mount+0xe8/0x160 fs/namespace.c:3351
 __do_sys_mount fs/namespace.c:3365 [inline]
 __se_sys_mount fs/namespace.c:3362 [inline]
 __x64_sys_mount+0x70/0x90 fs/namespace.c:3362
 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 22457 Comm: syz-executor.3 Not tainted 5.5.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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