[syzbot] Monthly ext4 report (Apr 2024)

[syzbot]

Hello ext4 maintainers/developers,

This is a 31-day syzbot report for the ext4 subsystem.
All related reports/information can be found at:
https://syzkaller.appspot.com/upstream/s/ext4

During the period, 6 new issues were detected and 1 were fixed.
In total, 27 issues are still open and 131 have been fixed so far.

Some of the still happening issues:

Ref Crashes Repro Title
<1> 8793    Yes   WARNING: locking bug in ext4_move_extents
                  https://syzkaller.appspot.com/bug?extid=7f4a6f7f7051474e40ad
<2> 706     Yes   WARNING: locking bug in __ext4_ioctl
                  https://syzkaller.appspot.com/bug?extid=a537ff48a9cb940d314c
<3> 435     Yes   WARNING: locking bug in ext4_ioctl
                  https://syzkaller.appspot.com/bug?extid=a3c8e9ac9f9d77240afd
<4> 151     Yes   INFO: task hung in sync_inodes_sb (5)
                  https://syzkaller.appspot.com/bug?extid=30476ec1b6dc84471133
<5> 33      Yes   KASAN: wild-memory-access Read in read_block_bitmap
                  https://syzkaller.appspot.com/bug?extid=47f3372b693d7f62b8ae
<6> 20      Yes   INFO: task hung in ext4_quota_write
                  https://syzkaller.appspot.com/bug?extid=a43d4f48b8397d0e41a9
<7> 19      Yes   INFO: rcu detected stall in sys_unlink (3)
                  https://syzkaller.appspot.com/bug?extid=c4f62ba28cc1290de764
<8> 13      Yes   kernel BUG in ext4_write_inline_data_end (2)
                  https://syzkaller.appspot.com/bug?extid=0c89d865531d053abb2d

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