linux-kernel - [syzbot] INFO: The task syz.NUM.NUM:LINE has been waiting for writeback completion for more than NUM seconds.

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: <6935c7c4.a70a0220.38f243.0068.GAE@google.com>
Date: Sun, 07 Dec 2025 10:30:28 -0800
From: syzbot <syzbot+bafa7d42e5d90ab3388c@...kaller.appspotmail.com>
To: linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: [syzbot] INFO: The task syz.NUM.NUM:LINE has been waiting for
 writeback completion for more than NUM seconds.

Hello,

syzbot found the following issue on:

HEAD commit:    a619fe35ab41 Merge tag 'v6.19-p1' of git://git.kernel.org/..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=100c3f42580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=be2b9f25000b7ff8
dashboard link: https://syzkaller.appspot.com/bug?extid=bafa7d42e5d90ab3388c
compiler:       aarch64-linux-gnu-gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: arm64
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=114ceab4580000

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/fa3fbcfdac58/non_bootable_disk-a619fe35.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/418936590540/vmlinux-a619fe35.xz
kernel image: https://storage.googleapis.com/syzbot-assets/078fe44a245d/Image-a619fe35.gz.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+bafa7d42e5d90ab3388c@...kaller.appspotmail.com

INFO: The task syz.3.19:3687 has been waiting for writeback completion for more than 1 seconds.

---
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.

syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.

If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title

If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.

If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)

If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report

If you want to undo deduplication, reply with:
#syz undup