[syzbot] Monthly mm report (Mar 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 1 were fixed.
In total, 42 issues are still open and 226 have been fixed so far.

Some of the still happening issues:

Ref  Crashes Repro Title
<1>  707     Yes   KCSAN: data-race in generic_fillattr / shmem_mknod (2)
                   https://syzkaller.appspot.com/bug?extid=702361cf7e3d95758761
<2>  657     Yes   possible deadlock in filemap_fault
                   https://syzkaller.appspot.com/bug?extid=7736960b837908f3a81d
<3>  649     No    KCSAN: data-race in generic_fillattr / shmem_unlink (3)
                   https://syzkaller.appspot.com/bug?extid=f682b67a78ce05867e78
<4>  88      Yes   WARNING in __kfence_free (3)
                   https://syzkaller.appspot.com/bug?extid=59f37b0ab4c558a5357c
<5>  47      Yes   BUG: unable to handle kernel paging request in list_lru_add
                   https://syzkaller.appspot.com/bug?extid=2403e3909382fbdeaf6c
<6>  45      Yes   BUG: unable to handle kernel NULL pointer dereference in __kmap_local_page_prot
                   https://syzkaller.appspot.com/bug?extid=b18872ea9631b5dcef3b
<7>  34      Yes   INFO: rcu detected stall in sys_openat (3)
                   https://syzkaller.appspot.com/bug?extid=23d96fb466ad56cbb5e5
<8>  11      Yes   WARNING in kunmap_local_indexed
                   https://syzkaller.appspot.com/bug?extid=691cb37358791bebebe6
<9>  11      Yes   kernel BUG in filemap_unaccount_folio
                   https://syzkaller.appspot.com/bug?extid=17a207d226b8a5fb0fd9
<10> 4       Yes   INFO: task hung in __unmap_and_move (4)
                   https://syzkaller.appspot.com/bug?extid=b7ad168b779385f8cd58

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