[syzbot] Monthly bcachefs report (Jan 2025)

[syzbot]

Hello bcachefs maintainers/developers,

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

During the period, 16 new issues were detected and 0 were fixed.
In total, 122 issues are still open and 110 have already been fixed.

Some of the still happening issues:

Ref  Crashes Repro Title
<1>  28728   Yes   INFO: task hung in bch2_copygc_stop
                   https://syzkaller.appspot.com/bug?extid=c6fd966ebbdea1e8ff08
<2>  7014    Yes   INFO: task hung in __closure_sync
                   https://syzkaller.appspot.com/bug?extid=7bf808f7fe4a6549f36e
<3>  5318    Yes   KMSAN: uninit-value in bch2_inode_v3_validate
                   https://syzkaller.appspot.com/bug?extid=3cd97352d16f0e6066d9
<4>  3400    Yes   WARNING in bch2_trans_srcu_unlock
                   https://syzkaller.appspot.com/bug?extid=1e515cab343dbe5aa38a
<5>  1840    Yes   KMSAN: uninit-value in rw_aux_tree_set (2)
                   https://syzkaller.appspot.com/bug?extid=ed52fb987e4b52cbfad9
<6>  1779    Yes   KASAN: slab-use-after-free Read in percpu_ref_put (2)
                   https://syzkaller.appspot.com/bug?extid=905d719acdbd213bf67e
<7>  1287    Yes   INFO: task hung in __bch2_fs_stop
                   https://syzkaller.appspot.com/bug?extid=6d3e28b33490b3085412
<8>  849     No    possible deadlock in bch2_symlink
                   https://syzkaller.appspot.com/bug?extid=7836a68852a10ec3d790
<9>  570     Yes   INFO: task hung in bch2_journal_reclaim_thread (2)
                   https://syzkaller.appspot.com/bug?extid=820dc3b465c69f766a57
<10> 402     Yes   KMSAN: uninit-value in bch2_alloc_v4_validate (2)
                   https://syzkaller.appspot.com/bug?extid=8dd95f470e7cd0ff4b66

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