[syzbot] Monthly mm report (May 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, 10 new issues were detected and 0 were fixed.
In total, 108 issues are still open and 370 have already been fixed.
There are also 14 low-priority issues.

Some of the still happening issues:

Ref  Crashes Repro Title
<1>  3645    Yes   WARNING in trace_suspend_resume
                   https://syzkaller.appspot.com/bug?extid=99d4fec338b62b703891
<2>  1005    No    KCSAN: data-race in __filemap_remove_folio / folio_mapping (2)
                   https://syzkaller.appspot.com/bug?extid=606f94dfeaaa45124c90
<3>  144     Yes   INFO: rcu detected stall in sys_unshare (9)
                   https://syzkaller.appspot.com/bug?extid=872bccd9a68c6ba47718
<4>  74      Yes   INFO: rcu detected stall in sys_setsockopt (4)
                   https://syzkaller.appspot.com/bug?extid=6e61d59e9d2150c8492b
<5>  45      Yes   memory leak in xas_create
                   https://syzkaller.appspot.com/bug?extid=a785d07959bc94837d51
<6>  8       Yes   INFO: rcu detected stall in kernfs_fop_open (7)
                   https://syzkaller.appspot.com/bug?extid=19d01f6082ec61dd45b2
<7>  6       Yes   INFO: rcu detected stall in sys_symlink (6)
                   https://syzkaller.appspot.com/bug?extid=e538d3da32f1c0337b01
<8>  10396   Yes   KASAN: use-after-free Read in copy_folio_from_iter_atomic (2)
                   https://syzkaller.appspot.com/bug?extid=6cc93ec9a4035badb85f
<9>  7470    Yes   WARNING in ext4_dirty_folio
                   https://syzkaller.appspot.com/bug?extid=ecab51a4a5b9f26eeaa1
<10> 1667    No    possible deadlock in lock_mm_and_find_vma (4)
                   https://syzkaller.appspot.com/bug?extid=709f5ab0e03871dec50a

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