[syzbot] Monthly mm report (Sep 2025)

[syzbot] Monthly mm report (Sep 2025)

[syzbot]

Hello mm maintainers/developers,

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

During the period, 7 new issues were detected and 2 were fixed.
In total, 117 issues are still open and 340 have already been fixed.

Some of the still happening issues:

Ref  Crashes Repro Title
<1>  7424    Yes   WARNING in ext4_dirty_folio
                   https://syzkaller.appspot.com/bug?extid=ecab51a4a5b9f26eeaa1
<2>  5478    Yes   WARNING in v9fs_fid_get_acl
                   https://syzkaller.appspot.com/bug?extid=a83dc51a78f0f4cf20da
<3>  3643    Yes   INFO: task hung in page_cache_ra_unbounded (2)
                   https://syzkaller.appspot.com/bug?extid=265e1cae90f8fa08f14d
<4>  2919    Yes   possible deadlock in filemap_fault
                   https://syzkaller.appspot.com/bug?extid=7736960b837908f3a81d
<5>  822     Yes   WARNING in trace_suspend_resume
                   https://syzkaller.appspot.com/bug?extid=99d4fec338b62b703891
<6>  708     No    KCSAN: data-race in __filemap_remove_folio / folio_mapping (2)
                   https://syzkaller.appspot.com/bug?extid=606f94dfeaaa45124c90
<7>  580     Yes   INFO: task hung in _vm_unmap_aliases (3)
                   https://syzkaller.appspot.com/bug?extid=fe8f8efd070d727de971
<8>  556     Yes   INFO: rcu detected stall in addrconf_rs_timer (6)
                   https://syzkaller.appspot.com/bug?extid=fecf8bd19c1f78edb255
<9>  464     Yes   kernel BUG in filemap_unaccount_folio
                   https://syzkaller.appspot.com/bug?extid=17a207d226b8a5fb0fd9
<10> 457     Yes   INFO: rcu detected stall in sys_newfstatat (4)
                   https://syzkaller.appspot.com/bug?extid=1c02a56102605204445c

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