[syzbot] Monthly fs report (Oct 2026)

[syzbot] Monthly fs report (Oct 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 1 were fixed.
In total, 46 issues are still open and 645 have already been fixed.
There are also 31 low-priority issues.

Some of the still happening issues:

Ref  Crashes Repro Title
<1>  11432   Yes   KASAN: use-after-free Read in hpfs_get_ea
                   https://syzkaller.appspot.com/bug?extid=fa88eb476e42878f2844
<2>  8798    Yes   INFO: task hung in __iterate_supers
                   https://syzkaller.appspot.com/bug?extid=b10aefdd9ef275e9368d
<3>  2037    Yes   INFO: task hung in user_get_super (2)
                   https://syzkaller.appspot.com/bug?extid=ba09f4a317431df6cddf
<4>  2004    Yes   INFO: task hung in lookup_slow (3)
                   https://syzkaller.appspot.com/bug?extid=7cfc6a4f6b025f710423
<5>  79      Yes   UBSAN: shift-out-of-bounds in befs_check_sb
                   https://syzkaller.appspot.com/bug?extid=fc26c366038b54261e53
<6>  28      Yes   KASAN: slab-use-after-free Read in lockref_get (2)
                   https://syzkaller.appspot.com/bug?extid=227dbc9afd022922d624
<7>  24      Yes   INFO: task hung in writeback_iter (3)
                   https://syzkaller.appspot.com/bug?extid=1e3ff4b07c16ca0f6fe2
<8>  9       Yes   INFO: rcu detected stall in kswapd (4)
                   https://syzkaller.appspot.com/bug?extid=f886305df0acc6fa097a
<9>  5       No    possible deadlock in uvcg_format_bma_controls_store
                   https://syzkaller.appspot.com/bug?extid=50560f9ba016e97e2023
<10> 43      Yes   KASAN: slab-use-after-free Read in filp_flush
                   https://syzkaller.appspot.com/bug?extid=df868600fe111c5ff79f

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