[syzbot] Monthly mm report (Jun 2026)

[syzbot] Monthly mm report (Jun 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, 7 new issues were detected and 0 were fixed.
In total, 86 issues are still open and 373 have already been fixed.
There are also 44 low-priority issues.

Some of the still happening issues:

Ref  Crashes Repro Title
<1>  20360   Yes   KASAN: use-after-free Read in copy_folio_from_iter_atomic (2)
                   https://syzkaller.appspot.com/bug?extid=6cc93ec9a4035badb85f
<2>  10103   Yes   WARNING in hrtick_start_fair
                   https://syzkaller.appspot.com/bug?extid=2cbf10efc23b22ff9c31
<3>  3807    Yes   WARNING in trace_suspend_resume
                   https://syzkaller.appspot.com/bug?extid=99d4fec338b62b703891
<4>  495     Yes   kernel BUG in filemap_unaccount_folio
                   https://syzkaller.appspot.com/bug?extid=17a207d226b8a5fb0fd9
<5>  194     No    INFO: task hung in migrate_pages_batch (4)
                   https://syzkaller.appspot.com/bug?extid=f523acb98cd782b4872e
<6>  132     Yes   INFO: rcu detected stall in __dentry_kill
                   https://syzkaller.appspot.com/bug?extid=f8ccdac0a7eede0e1ae5
<7>  87      Yes   INFO: rcu detected stall in sys_setsockopt (4)
                   https://syzkaller.appspot.com/bug?extid=6e61d59e9d2150c8492b
<8>  76      Yes   KASAN: slab-use-after-free Read in folio_evictable (3)
                   https://syzkaller.appspot.com/bug?extid=4c7590f1cee06597e43a
<9>  50      Yes   memory leak in xas_create
                   https://syzkaller.appspot.com/bug?extid=a785d07959bc94837d51
<10> 19      Yes   INFO: task hung in writeback_iter (3)
                   https://syzkaller.appspot.com/bug?extid=1e3ff4b07c16ca0f6fe2

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