BTRFS error (device loop3): unsupported checksum algorithm: 7053
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BUG: KCSAN: data-race in lru_add_drain_all / pagevec_lru_move_fn

write to 0xffff88812bf27620 of 1 bytes by task 19667 on cpu 1:
 pagevec_reinit include/linux/pagevec.h:63 [inline]
 pagevec_lru_move_fn+0x163/0x180 mm/swap.c:216
 __pagevec_lru_add mm/swap.c:966 [inline]
 lru_add_drain_cpu+0x178/0x2e0 mm/swap.c:594
 lru_add_drain+0x35/0x80 mm/swap.c:689
 unmap_region+0x6b/0x270 mm/mmap.c:2622
 __do_munmap+0x661/0xb60 mm/mmap.c:2845
 do_munmap mm/mmap.c:2856 [inline]
 mmap_region+0x165/0xd50 mm/mmap.c:1749
 do_mmap+0x6d4/0xba0 mm/mmap.c:1577
 do_mmap_pgoff include/linux/mm.h:2348 [inline]
 vm_mmap_pgoff+0x12d/0x190 mm/util.c:496
 ksys_mmap_pgoff+0x2d8/0x420 mm/mmap.c:1629
 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline]
 __se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline]
 __x64_sys_mmap+0x2e/0x40 arch/x86/kernel/sys_x86_64.c:91
 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

read to 0xffff88812bf27620 of 1 bytes by task 19643 on cpu 0:
 lru_add_drain_all+0xf5/0x350 mm/swap.c:728
 invalidate_bdev+0x6e/0x90 fs/block_dev.c:97
 btrfs_close_bdev.part.0+0xa8/0xb0 fs/btrfs/volumes.c:1238
 btrfs_close_bdev fs/btrfs/volumes.c:1233 [inline]
 btrfs_close_one_device fs/btrfs/volumes.c:1262 [inline]
 close_fs_devices.part.0+0x170/0x520 fs/btrfs/volumes.c:1291
 close_fs_devices fs/btrfs/volumes.c:1323 [inline]
 btrfs_close_devices+0x92/0x170 fs/btrfs/volumes.c:1309
 open_ctree+0x194/0x3ce2 fs/btrfs/disk-io.c:3364
 btrfs_fill_super fs/btrfs/super.c:1213 [inline]
 btrfs_mount_root+0x8c7/0xb00 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/0x370 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 19643 Comm: syz-executor.3 Not tainted 5.4.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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