[syzbot] [btrfs] Monthly Report

[syzbot]

Hello btrfs maintainers/developers,

This is a 30-day syzbot report for btrfs subsystem.
All related reports/information can be found at:
https://syzkaller.appspot.com/upstream/s/btrfs

During the period, 3 new issues were detected and 0 were fixed.
In total, 53 issues are still open and 29 have been fixed so far.

Some of the still happening issues:

Crashes Repro Title
1442    Yes   kernel BUG in close_ctree
              https://syzkaller.appspot.com/bug?extid=2665d678fffcc4608e18
221     Yes   VFS: Busy inodes after unmount (use-after-free)
              https://syzkaller.appspot.com/bug?extid=0af00f6a2cba2058b5db
197     Yes   WARNING in __kernel_write_iter
              https://syzkaller.appspot.com/bug?extid=12e098239d20385264d3
158     Yes   WARNING in btrfs_space_info_update_bytes_may_use
              https://syzkaller.appspot.com/bug?extid=8edfa01e46fd9fe3fbfb
144     Yes   WARNING in btrfs_chunk_alloc
              https://syzkaller.appspot.com/bug?extid=e8e56d5d31d38b5b47e7
143     Yes   WARNING in btrfs_remove_chunk
              https://syzkaller.appspot.com/bug?extid=e8582cc16881ec70a430
84      Yes   WARNING in kernfs_remove_by_name_ns (3)
              https://syzkaller.appspot.com/bug?extid=93cbdd0ab421adc5275d
71      Yes   kernel BUG in assertfail (2)
              https://syzkaller.appspot.com/bug?extid=c4614eae20a166c25bf0
67      Yes   INFO: task hung in lock_extent
              https://syzkaller.appspot.com/bug?extid=eaa05fbc7563874b7ad2
59      Yes   WARNING in lookup_inline_extent_backref
              https://syzkaller.appspot.com/bug?extid=d6f9ff86c1d804ba2bc6

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