[syzbot] Monthly mm report (Jan 2026)

[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 0 were fixed.
In total, 117 issues are still open and 355 have already been fixed.

Some of the still happening issues:

Ref Crashes Repro Title
<1> 13965 Yes WARNING in path_noexec (2)
https://syzkaller.appspot.com/bug?extid=a9391462075ffb9f77c6
<2> 7446 Yes WARNING in ext4_dirty_folio
https://syzkaller.appspot.com/bug?extid=ecab51a4a5b9f26eeaa1
<3> 3650 Yes INFO: task hung in page_cache_ra_unbounded (2)
https://syzkaller.appspot.com/bug?extid=265e1cae90f8fa08f14d
<4> 3012 Yes possible deadlock in filemap_fault
https://syzkaller.appspot.com/bug?extid=7736960b837908f3a81d
<5> 2188 Yes WARNING in trace_suspend_resume
https://syzkaller.appspot.com/bug?extid=99d4fec338b62b703891
<6> 1539 Yes kernel BUG in __filemap_add_folio
https://syzkaller.appspot.com/bug?extid=4d3cc33ef7a77041efa6
<7> 864 No KCSAN: data-race in __filemap_remove_folio / folio_mapping (2)
https://syzkaller.appspot.com/bug?extid=606f94dfeaaa45124c90
<8> 673 Yes INFO: task hung in _vm_unmap_aliases (3)
https://syzkaller.appspot.com/bug?extid=fe8f8efd070d727de971
<9> 646 Yes INFO: rcu detected stall in addrconf_rs_timer (6)
https://syzkaller.appspot.com/bug?extid=fecf8bd19c1f78edb255
<10> 526 Yes INFO: rcu detected stall in sys_openat (3)
https://syzkaller.appspot.com/bug?extid=23d96fb466ad56cbb5e5

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