[syzbot] Monthly btrfs report (Oct 2025)

[syzbot]

Hello btrfs maintainers/developers,

This is a 31-day syzbot report for the btrfs subsystem.
All related reports/information can be found at:
https://syzkaller.appspot.com/upstream/s/btrfs

During the period, 8 new issues were detected and 2 were fixed.
In total, 39 issues are still open and 105 have already been fixed.

Some of the still happening issues:

Ref Crashes Repro Title
<1> 4953 Yes WARNING in btrfs_space_info_update_bytes_may_use
https://syzkaller.appspot.com/bug?extid=8edfa01e46fd9fe3fbfb
<2> 3766 Yes BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! (7)
https://syzkaller.appspot.com/bug?extid=74f79df25c37437e4d5a
<3> 1169 Yes WARNING in btrfs_create_pending_block_groups (2)
https://syzkaller.appspot.com/bug?extid=b0643a1387dac0572b27
<4> 1083 Yes WARNING in btrfs_commit_transaction (2)
https://syzkaller.appspot.com/bug?extid=dafbca0e20fbc5946925
<5> 637 Yes WARNING in btrfs_chunk_alloc
https://syzkaller.appspot.com/bug?extid=e8e56d5d31d38b5b47e7
<6> 422 Yes WARNING in btrfs_remove_chunk
https://syzkaller.appspot.com/bug?extid=e8582cc16881ec70a430
<7> 368 No possible deadlock in lookup_slow (3)
https://syzkaller.appspot.com/bug?extid=65459fd3b61877d717a3
<8> 245 Yes WARNING in btrfs_release_global_block_rsv (2)
https://syzkaller.appspot.com/bug?extid=48ed002119c0f19daf63
<9> 168 Yes WARNING in btrfs_put_block_group
https://syzkaller.appspot.com/bug?extid=e38c6fff39c0d7d6f121
<10> 163 Yes kernel BUG in clear_state_bit
https://syzkaller.appspot.com/bug?extid=78dbea1c214b5413bdd3

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