linux-kernel - [syzbot] Monthly ext4 report (Nov 2025)

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <692a1259.a70a0220.d98e3.014d.GAE@google.com>
Date: Fri, 28 Nov 2025 13:21:29 -0800
From: syzbot <syzbot+list3f074455b722999fe7b1@...kaller.appspotmail.com>
To: linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org, 
	syzkaller-bugs@...glegroups.com
Subject: [syzbot] Monthly ext4 report (Nov 2025)

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, 51 issues are still open and 163 have already been fixed.

Some of the still happening issues:

Ref  Crashes Repro Title
<1>  4656    Yes   KASAN: out-of-bounds Read in ext4_xattr_set_entry
                   https://syzkaller.appspot.com/bug?extid=f792df426ff0f5ceb8d1
<2>  2848    Yes   kernel BUG in ext4_do_writepages
                   https://syzkaller.appspot.com/bug?extid=d1da16f03614058fdc48
<3>  2818    Yes   INFO: task hung in sync_inodes_sb (5)
                   https://syzkaller.appspot.com/bug?extid=30476ec1b6dc84471133
<4>  2141    Yes   INFO: task hung in jbd2_journal_commit_transaction (5)
                   https://syzkaller.appspot.com/bug?extid=3071bdd0a9953bc0d177
<5>  1317    Yes   possible deadlock in ext4_writepages (2)
                   https://syzkaller.appspot.com/bug?extid=eb5b4ef634a018917f3c
<6>  1083    Yes   WARNING in ext4_xattr_inode_update_ref (2)
                   https://syzkaller.appspot.com/bug?extid=76916a45d2294b551fd9
<7>  989     Yes   WARNING in ext4_xattr_inode_lookup_create
                   https://syzkaller.appspot.com/bug?extid=fe42a669c87e4a980051
<8>  635     No    KCSAN: data-race in generic_buffers_fsync_noflush / writeback_single_inode (3)
                   https://syzkaller.appspot.com/bug?extid=35257a2200785ea628f5
<9>  448     Yes   INFO: task hung in do_get_write_access (3)
                   https://syzkaller.appspot.com/bug?extid=e7c786ece54bad9d1e43
<10> 277     Yes   INFO: task hung in do_renameat2 (2)
                   https://syzkaller.appspot.com/bug?extid=39a12f7473ed8066d2ca

---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@...glegroups.com.

To disable reminders for individual bugs, reply with the following command:
#syz set <Ref> no-reminders

To change bug's subsystems, reply with:
#syz set <Ref> subsystems: new-subsystem

You may send multiple commands in a single email message.