[syzbot] Monthly kernfs report (Jul 2024)

[syzbot]

Hello kernfs maintainers/developers,

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

During the period, 4 new issues were detected and 0 were fixed.
In total, 20 issues are still open and 20 have been fixed so far.

Some of the still happening issues:

Ref  Crashes Repro Title
<1>  4937    Yes   BUG: workqueue lockup (5)
                   https://syzkaller.appspot.com/bug?extid=f0b66b520b54883d4b9d
<2>  949     Yes   INFO: task hung in lookup_slow (3)
                   https://syzkaller.appspot.com/bug?extid=7cfc6a4f6b025f710423
<3>  428     Yes   possible deadlock in __kernfs_remove
                   https://syzkaller.appspot.com/bug?extid=4762dd74e32532cda5ff
<4>  321     No    possible deadlock in lookup_slow (3)
                   https://syzkaller.appspot.com/bug?extid=65459fd3b61877d717a3
<5>  246     Yes   WARNING in kernfs_remove_by_name_ns (3)
                   https://syzkaller.appspot.com/bug?extid=93cbdd0ab421adc5275d
<6>  22      Yes   INFO: task hung in kernfs_dop_revalidate (4)
                   https://syzkaller.appspot.com/bug?extid=da20d108162166514db6
<7>  9       Yes   WARNING in kernfs_get (5)
                   https://syzkaller.appspot.com/bug?extid=2f44671e54488d20f0e6
<8>  7       Yes   INFO: task hung in kernfs_remove_by_name_ns (2)
                   https://syzkaller.appspot.com/bug?extid=6d5664213a6db9a5a72c
<9>  1       No    KCSAN: data-race in kernfs_iop_permission / kernfs_iop_permission (4)
                   https://syzkaller.appspot.com/bug?extid=4d9e77bc73d118c6dc78
<10> 1       No    possible deadlock in kernfs_fop_write_iter
                   https://syzkaller.appspot.com/bug?extid=24386307cce6239b5f68

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