[syzbot] Monthly mm report (May 2025)

[syzbot] Monthly mm report (May 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, 4 new issues were detected and 3 were fixed.
In total, 130 issues are still open and 291 have already been fixed.

Some of the still happening issues:

Ref  Crashes Repro Title
<1>  7398    Yes   WARNING in ext4_dirty_folio
                   https://syzkaller.appspot.com/bug?extid=ecab51a4a5b9f26eeaa1
<2>  3537    Yes   INFO: rcu detected stall in worker_thread (9)
                   https://syzkaller.appspot.com/bug?extid=225bfad78b079744fd5e
<3>  2775    Yes   possible deadlock in filemap_fault
                   https://syzkaller.appspot.com/bug?extid=7736960b837908f3a81d
<4>  2357    Yes   BUG: Bad rss-counter state (5)
                   https://syzkaller.appspot.com/bug?extid=f2bbbb592debc978d46d
<5>  1997    Yes   possible deadlock in gup_fast_fallback
                   https://syzkaller.appspot.com/bug?extid=63ba90b81c16b86379bd
<6>  1861    Yes   WARNING in vms_complete_munmap_vmas
                   https://syzkaller.appspot.com/bug?extid=38c3a8b50658644abaca
<7>  1469    Yes   WARNING in kunmap_local_indexed
                   https://syzkaller.appspot.com/bug?extid=691cb37358791bebebe6
<8>  651     Yes   INFO: rcu detected stall in corrupted (4)
                   https://syzkaller.appspot.com/bug?extid=aa7d098bd6fa788fae8e
<9>  531     No    KCSAN: data-race in __filemap_remove_folio / folio_mapping (2)
                   https://syzkaller.appspot.com/bug?extid=606f94dfeaaa45124c90
<10> 516     Yes   INFO: task hung in _vm_unmap_aliases (3)
                   https://syzkaller.appspot.com/bug?extid=fe8f8efd070d727de971

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