[syzbot] Monthly mm report (Dec 2023)

[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, 2 new issues were detected and 2 were fixed.
In total, 32 issues are still open and 220 have been fixed so far.

Some of the still happening issues:

Ref  Crashes Repro Title
<1>  10188   Yes   KASAN: slab-out-of-bounds Read in generic_perform_write
                   https://syzkaller.appspot.com/bug?extid=4a2376bc62e59406c414
<2>  7356    Yes   WARNING in ext4_dirty_folio
                   https://syzkaller.appspot.com/bug?extid=ecab51a4a5b9f26eeaa1
<3>  640     No    KCSAN: data-race in generic_fillattr / shmem_mknod (2)
                   https://syzkaller.appspot.com/bug?extid=702361cf7e3d95758761
<4>  594     No    KCSAN: data-race in generic_fillattr / shmem_unlink (3)
                   https://syzkaller.appspot.com/bug?extid=f682b67a78ce05867e78
<5>  560     Yes   possible deadlock in filemap_fault
                   https://syzkaller.appspot.com/bug?extid=7736960b837908f3a81d
<6>  365     Yes   BUG: bad usercopy in fpa_set
                   https://syzkaller.appspot.com/bug?extid=cb76c2983557a07cdb14
<7>  36      Yes   WARNING in __kfence_free (3)
                   https://syzkaller.appspot.com/bug?extid=59f37b0ab4c558a5357c
<8>  27      Yes   INFO: rcu detected stall in sys_openat (3)
                   https://syzkaller.appspot.com/bug?extid=23d96fb466ad56cbb5e5
<9>  21      Yes   general protection fault in __hugetlb_zap_begin
                   https://syzkaller.appspot.com/bug?extid=ec9435c038e451be48ff
<10> 15      Yes   memory leak in xas_create
                   https://syzkaller.appspot.com/bug?extid=a785d07959bc94837d51

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