[syzbot] Monthly mm report (Nov 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, 9 new issues were detected and 0 were fixed.
In total, 49 issues are still open and 237 have been fixed so far.

Some of the still happening issues:

Ref  Crashes Repro Title
<1>  7353    Yes   WARNING in ext4_dirty_folio
                   https://syzkaller.appspot.com/bug?extid=ecab51a4a5b9f26eeaa1
<2>  616     No    KCSAN: data-race in generic_fillattr / shmem_mknod (2)
                   https://syzkaller.appspot.com/bug?extid=702361cf7e3d95758761
<3>  575     No    KCSAN: data-race in generic_fillattr / shmem_unlink (3)
                   https://syzkaller.appspot.com/bug?extid=f682b67a78ce05867e78
<4>  272     Yes   BUG: bad usercopy in fpa_set
                   https://syzkaller.appspot.com/bug?extid=cb76c2983557a07cdb14
<5>  131     No    KCSAN: data-race in __filemap_remove_folio / folio_mapping (2)
                   https://syzkaller.appspot.com/bug?extid=606f94dfeaaa45124c90
<6>  15      Yes   memory leak in xas_create
                   https://syzkaller.appspot.com/bug?extid=a785d07959bc94837d51
<7>  10      Yes   kernel BUG in do_page_mkwrite
                   https://syzkaller.appspot.com/bug?extid=cfba1abcb2cf7b39a320
<8>  4       Yes   INFO: task hung in __unmap_and_move (4)
                   https://syzkaller.appspot.com/bug?extid=b7ad168b779385f8cd58
<9>  2       Yes   BUG: unable to handle kernel paging request in __pte_offset_map_lock
                   https://syzkaller.appspot.com/bug?extid=89edd67979b52675ddec
<10> 1       Yes   general protection fault in unlink_file_vma (2)
                   https://syzkaller.appspot.com/bug?extid=7fbdbd17a5bd6d01bc65

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