[syzbot] Monthly mm report (Feb 2024)

[syzbot] Monthly mm report (Feb 2024)

[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, 8 new issues were detected and 0 were fixed.
In total, 40 issues are still open and 224 have been fixed so far.

Some of the still happening issues:

Ref  Crashes Repro Title
<1>  135391  Yes   KMSAN: uninit-value in virtqueue_add (4)
                   https://syzkaller.appspot.com/bug?extid=d7521c1e3841ed075a42
<2>  7366    Yes   WARNING in ext4_dirty_folio
                   https://syzkaller.appspot.com/bug?extid=ecab51a4a5b9f26eeaa1
<3>  689     Yes   KCSAN: data-race in generic_fillattr / shmem_mknod (2)
                   https://syzkaller.appspot.com/bug?extid=702361cf7e3d95758761
<4>  645     Yes   BUG: bad usercopy in fpa_set
                   https://syzkaller.appspot.com/bug?extid=cb76c2983557a07cdb14
<5>  632     No    KCSAN: data-race in generic_fillattr / shmem_unlink (3)
                   https://syzkaller.appspot.com/bug?extid=f682b67a78ce05867e78
<6>  626     Yes   possible deadlock in filemap_fault
                   https://syzkaller.appspot.com/bug?extid=7736960b837908f3a81d
<7>  200     No    KCSAN: data-race in __filemap_remove_folio / folio_mapping (2)
                   https://syzkaller.appspot.com/bug?extid=606f94dfeaaa45124c90
<8>  73      Yes   WARNING in __kfence_free (3)
                   https://syzkaller.appspot.com/bug?extid=59f37b0ab4c558a5357c
<9>  36      Yes   BUG: unable to handle kernel paging request in list_lru_add
                   https://syzkaller.appspot.com/bug?extid=2403e3909382fbdeaf6c
<10> 33      Yes   BUG: unable to handle kernel NULL pointer dereference in __kmap_local_page_prot
                   https://syzkaller.appspot.com/bug?extid=b18872ea9631b5dcef3b

---
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@googlegroups.com.

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.