[syzbot] Monthly btrfs report (Sep 2025)

[syzbot] Monthly btrfs report (Sep 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, 1 new issues were detected and 1 were fixed.
In total, 32 issues are still open and 103 have already been fixed.

Some of the still happening issues:

Ref  Crashes Repro Title
<1>  6558    Yes   kernel BUG in close_ctree
                   https://syzkaller.appspot.com/bug?extid=2665d678fffcc4608e18
<2>  4748    Yes   WARNING in btrfs_space_info_update_bytes_may_use
                   https://syzkaller.appspot.com/bug?extid=8edfa01e46fd9fe3fbfb
<3>  2686    Yes   BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! (7)
                   https://syzkaller.appspot.com/bug?extid=74f79df25c37437e4d5a
<4>  1061    Yes   WARNING in btrfs_commit_transaction (2)
                   https://syzkaller.appspot.com/bug?extid=dafbca0e20fbc5946925
<5>  1029    Yes   WARNING in btrfs_create_pending_block_groups (2)
                   https://syzkaller.appspot.com/bug?extid=b0643a1387dac0572b27
<6>  624     Yes   WARNING in btrfs_chunk_alloc
                   https://syzkaller.appspot.com/bug?extid=e8e56d5d31d38b5b47e7
<7>  470     Yes   WARNING in cleanup_transaction
                   https://syzkaller.appspot.com/bug?extid=021d10c4d4edc87daa03
<8>  409     Yes   WARNING in btrfs_remove_chunk
                   https://syzkaller.appspot.com/bug?extid=e8582cc16881ec70a430
<9>  153     Yes   kernel BUG in clear_state_bit
                   https://syzkaller.appspot.com/bug?extid=78dbea1c214b5413bdd3
<10> 105     Yes   KMSAN: uninit-value in iov_iter_alignment_iovec
                   https://syzkaller.appspot.com/bug?extid=f2a9c06bfaa027217ebb

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