linux-ext4 - [syzbot] Monthly ext4 report (Apr 2023)

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Date:   Fri, 28 Apr 2023 08:06:51 -0700
From:   syzbot <syzbot+list6dfc6ea307bfacecbbe0@...kaller.appspotmail.com>
To:     adilger.kernel@...ger.ca, linux-ext4@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        syzkaller-bugs@...glegroups.com, tytso@....edu
Subject: [syzbot] Monthly ext4 report (Apr 2023)

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 0 were fixed.
In total, 72 issues are still open and 82 have been fixed so far.

Some of the still happening issues:

Ref  Crashes Repro Title
<1>  83130   Yes   possible deadlock in jbd2_journal_lock_updates
                   https://syzkaller.appspot.com/bug?extid=79e6bbabf3ce17357969
<2>  7208    Yes   WARNING in ext4_dirty_folio
                   https://syzkaller.appspot.com/bug?extid=ecab51a4a5b9f26eeaa1
<3>  5604    Yes   possible deadlock in dquot_commit (2)
                   https://syzkaller.appspot.com/bug?extid=70ff52e51b7e7714db8a
<4>  773     Yes   INFO: task hung in __sync_dirty_buffer
                   https://syzkaller.appspot.com/bug?extid=91dccab7c64e2850a4e5
<5>  476     No    possible deadlock in ext4_map_blocks
                   https://syzkaller.appspot.com/bug?extid=6de5025c31d33047d2a4
<6>  361     No    possible deadlock in ext4_multi_mount_protect
                   https://syzkaller.appspot.com/bug?extid=6b7df7d5506b32467149
<7>  203     Yes   kernel BUG in ext4_get_group_info
                   https://syzkaller.appspot.com/bug?extid=e2efa3efc15a1c9e95c3
<8>  93      Yes   kernel BUG in ext4_do_writepages
                   https://syzkaller.appspot.com/bug?extid=d1da16f03614058fdc48
<9>  29      Yes   KASAN: slab-out-of-bounds Read in ext4_enable_quotas
                   https://syzkaller.appspot.com/bug?extid=ea70429cd5cf47ba8937
<10> 22      Yes   WARNING in ext4_xattr_block_set (2)
                   https://syzkaller.appspot.com/bug?extid=6385d7d3065524c5ca6d

---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
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