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, 2 new issues were detected and 3 were fixed. In total, 34 issues are still open and 223 have been fixed so far. Some of the still happening issues: Ref Crashes Repro Title <1> 7363 Yes WARNING in ext4_dirty_folio https://syzkaller.appspot.com/bug?extid=ecab51a4a5b9f26eeaa1 <2> 607 No KCSAN: data-race in generic_fillattr / shmem_unlink (3) https://syzkaller.appspot.com/bug?extid=f682b67a78ce05867e78 <3> 489 Yes BUG: bad usercopy in fpa_set https://syzkaller.appspot.com/bug?extid=cb76c2983557a07cdb14 <4> 55 Yes WARNING in __kfence_free (3) https://syzkaller.appspot.com/bug?extid=59f37b0ab4c558a5357c <5> 27 Yes BUG: unable to handle kernel paging request in list_lru_add https://syzkaller.appspot.com/bug?extid=2403e3909382fbdeaf6c <6> 24 Yes BUG: unable to handle kernel NULL pointer dereference in __kmap_local_page_prot https://syzkaller.appspot.com/bug?extid=b18872ea9631b5dcef3b <7> 11 No WARNING in __gup_longterm_locked (2) https://syzkaller.appspot.com/bug?extid=f2577d8071a92e596253 <8> 11 Yes kernel BUG in do_page_mkwrite https://syzkaller.appspot.com/bug?extid=cfba1abcb2cf7b39a320 <9> 8 Yes kernel BUG in filemap_unaccount_folio https://syzkaller.appspot.com/bug?extid=17a207d226b8a5fb0fd9 <10> 6 Yes INFO: rcu detected stall in dput (8) https://syzkaller.appspot.com/bug?extid=eb9f416500ff134ab699 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. To disable reminders for individual bugs, reply with the following command: #syz set <Ref> no-reminders To change bug's subsystems, reply with: #syz set <Ref> subsystems: new-subsystem You may send multiple commands in a single email message.