[syzbot] Monthly kernfs report (Aug 2025)

[syzbot] Monthly kernfs report (Aug 2025)

[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, 3 new issues were detected and 0 were fixed.
In total, 26 issues are still open and 24 have already been fixed.

Some of the still happening issues:

Ref  Crashes Repro Title
<1>  869     Yes   possible deadlock in kernfs_iop_getattr
                   https://syzkaller.appspot.com/bug?extid=4bb2305559463e8f6a2a
<2>  450     Yes   WARNING in kernfs_remove_by_name_ns (3)
                   https://syzkaller.appspot.com/bug?extid=93cbdd0ab421adc5275d
<3>  445     Yes   WARNING in kernfs_get (5)
                   https://syzkaller.appspot.com/bug?extid=2f44671e54488d20f0e6
<4>  355     No    possible deadlock in lookup_slow (3)
                   https://syzkaller.appspot.com/bug?extid=65459fd3b61877d717a3
<5>  108     Yes   INFO: task hung in fdget_pos
                   https://syzkaller.appspot.com/bug?extid=0ee1ef35cf7e70ce55d7
<6>  69      Yes   INFO: task hung in kernfs_add_one
                   https://syzkaller.appspot.com/bug?extid=e4804edf2708e8b7d2a5
<7>  64      Yes   possible deadlock in kernfs_remove
                   https://syzkaller.appspot.com/bug?extid=2d7d0fbb5fb979113ff3
<8>  53      Yes   INFO: rcu detected stall in sys_unshare (9)
                   https://syzkaller.appspot.com/bug?extid=872bccd9a68c6ba47718
<9>  43      No    INFO: task hung in sb_start_write (2)
                   https://syzkaller.appspot.com/bug?extid=b3fba2e269970207b61d
<10> 11      No    BUG: unable to handle kernel paging request in kernfs_remove_by_name_ns
                   https://syzkaller.appspot.com/bug?extid=4faa3fd832279bd35a81

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