[syzbot] Monthly mm report (Oct 2026)

[syzbot] Monthly mm report (Oct 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, 79 issues are still open and 386 have already been fixed.
There are also 37 low-priority issues.

Some of the still happening issues:

Ref  Crashes Repro Title
<1>  45812   Yes   KASAN: use-after-free Read in copy_folio_from_iter_atomic (2)
                   https://syzkaller.appspot.com/bug?extid=6cc93ec9a4035badb85f
<2>  4126    Yes   WARNING in trace_suspend_resume
                   https://syzkaller.appspot.com/bug?extid=99d4fec338b62b703891
<3>  648     Yes   INFO: rcu detected stall in sys_newfstatat (4)
                   https://syzkaller.appspot.com/bug?extid=1c02a56102605204445c
<4>  536     Yes   kernel BUG in filemap_unaccount_folio
                   https://syzkaller.appspot.com/bug?extid=17a207d226b8a5fb0fd9
<5>  444     Yes   WARNING in ext4_mb_load_buddy_gfp
                   https://syzkaller.appspot.com/bug?extid=fd3f70a4509fca8c265d
<6>  361     No    kernel BUG in __page_table_check_zero (3)
                   https://syzkaller.appspot.com/bug?extid=2b5fe617654be3d8848b
<7>  324     Yes   kernel panic: System is deadlocked on memory (2)
                   https://syzkaller.appspot.com/bug?extid=c61d6962d0b7e698439e
<8>  189     Yes   INFO: rcu detected stall in sys_unshare (9)
                   https://syzkaller.appspot.com/bug?extid=872bccd9a68c6ba47718
<9>  126     Yes   INFO: rcu detected stall in dentry_kill
                   https://syzkaller.appspot.com/bug?extid=0635dc2e2c3c21a6aa04
<10> 124     Yes   INFO: rcu detected stall in sys_setsockopt (4)
                   https://syzkaller.appspot.com/bug?extid=6e61d59e9d2150c8492b

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