[syzbot] Monthly fs report (Nov 2026)

[syzbot] Monthly fs report (Nov 2026)

[syzbot]

Hello fs maintainers/developers,

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

During the period, 2 new issues were detected and 2 were fixed.
In total, 42 issues are still open and 644 have already been fixed.
There are also 35 low-priority issues.

Some of the still happening issues:

Ref  Crashes Repro Title
<1>  12025   Yes   KASAN: use-after-free Read in hpfs_get_ea
                   https://syzkaller.appspot.com/bug?extid=fa88eb476e42878f2844
<2>  10568   Yes   VFS: Busy inodes after unmount (use-after-free) (4)
                   https://syzkaller.appspot.com/bug?extid=d569e274f46ca86f78fa
<3>  8841    Yes   INFO: task hung in __iterate_supers
                   https://syzkaller.appspot.com/bug?extid=b10aefdd9ef275e9368d
<4>  2045    Yes   INFO: task hung in user_get_super (2)
                   https://syzkaller.appspot.com/bug?extid=ba09f4a317431df6cddf
<5>  37      Yes   KASAN: slab-use-after-free Read in lockref_get (2)
                   https://syzkaller.appspot.com/bug?extid=227dbc9afd022922d624
<6>  28      Yes   INFO: rcu detected stall in sys_close (7)
                   https://syzkaller.appspot.com/bug?extid=393022c13d02e1f680e3
<7>  26      Yes   INFO: task hung in writeback_iter (3)
                   https://syzkaller.appspot.com/bug?extid=1e3ff4b07c16ca0f6fe2
<8>  11      Yes   KASAN: use-after-free Read in hpfs_bplus_lookup
                   https://syzkaller.appspot.com/bug?extid=8debf4b3f7c7391cd8eb
<9>  11      Yes   divide error in qnx6_mmi_fill_super
                   https://syzkaller.appspot.com/bug?extid=6a0633f11d3fb88860bf
<10> 10      Yes   INFO: rcu detected stall in kswapd (4)
                   https://syzkaller.appspot.com/bug?extid=f886305df0acc6fa097a

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