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 4 were fixed. In total, 79 issues are still open and 263 have been fixed so far. Some of the still happening issues: Ref Crashes Repro Title <1> 10299 Yes KASAN: slab-out-of-bounds Read in generic_perform_write https://syzkaller.appspot.com/bug?extid=4a2376bc62e59406c414 <2> 7383 Yes WARNING in ext4_dirty_folio https://syzkaller.appspot.com/bug?extid=ecab51a4a5b9f26eeaa1 <3> 2612 Yes INFO: task hung in page_cache_ra_unbounded (2) https://syzkaller.appspot.com/bug?extid=265e1cae90f8fa08f14d <4> 2189 Yes INFO: rcu detected stall in worker_thread (9) https://syzkaller.appspot.com/bug?extid=225bfad78b079744fd5e <5> 1579 Yes possible deadlock in filemap_fault https://syzkaller.appspot.com/bug?extid=7736960b837908f3a81d <6> 679 Yes possible deadlock in gup_fast_fallback https://syzkaller.appspot.com/bug?extid=63ba90b81c16b86379bd <7> 559 Yes INFO: rcu detected stall in corrupted (4) https://syzkaller.appspot.com/bug?extid=aa7d098bd6fa788fae8e <8> 460 Yes INFO: task hung in _vm_unmap_aliases (3) https://syzkaller.appspot.com/bug?extid=fe8f8efd070d727de971 <9> 289 No KCSAN: data-race in __filemap_remove_folio / folio_mapping (2) https://syzkaller.appspot.com/bug?extid=606f94dfeaaa45124c90 <10> 287 No WARNING: locking bug in __schedule https://syzkaller.appspot.com/bug?extid=46b40e354b532433eeef --- 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.