[syzbot-moderation] Monthly btrfs report (Nov 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, 2 new issues were detected and 0 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> 6716 Yes BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! (7)
https://syzkaller.appspot.com/bug?extid=74f79df25c37437e4d5a
<2> 5176 Yes WARNING in btrfs_space_info_update_bytes_may_use
https://syzkaller.appspot.com/bug?extid=8edfa01e46fd9fe3fbfb
<3> 1243 Yes WARNING in btrfs_create_pending_block_groups (2)
https://syzkaller.appspot.com/bug?extid=b0643a1387dac0572b27
<4> 1155 Yes WARNING in btrfs_commit_transaction (2)
https://syzkaller.appspot.com/bug?extid=dafbca0e20fbc5946925
<5> 646 Yes WARNING in btrfs_chunk_alloc
https://syzkaller.appspot.com/bug?extid=e8e56d5d31d38b5b47e7
<6> 474 Yes WARNING in cleanup_transaction
https://syzkaller.appspot.com/bug?extid=021d10c4d4edc87daa03
<7> 422 Yes WARNING in btrfs_remove_chunk
https://syzkaller.appspot.com/bug?extid=e8582cc16881ec70a430
<8> 370 No possible deadlock in lookup_slow (3)
https://syzkaller.appspot.com/bug?extid=65459fd3b61877d717a3
<9> 170 Yes WARNING in btrfs_put_block_group
https://syzkaller.appspot.com/bug?extid=e38c6fff39c0d7d6f121
<10> 167 Yes kernel BUG in clear_state_bit
https://syzkaller.appspot.com/bug?extid=78dbea1c214b5413bdd3

The report will be sent to: [linux...@vger.kernel.org c...@fb.com dst...@suse.com jo...@toxicpanda.com linux-...@vger.kernel.org].

---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.

To disable reminders for individual bugs, reply with the following command:
#syz set <Ref> no-reminders

To change bug's subsystems, reply with:
#syz set <Ref> subsystems: new-subsystem

If the report looks fine to you, reply with:
#syz upstream

To regenerate the report, reply with:
#syz regenerate

You may send multiple commands in a single email message.