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

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Dec 7, 2025, 1:30:29 PM (2 days ago) Dec 7
to linux-...@vger.kernel.org, syzkall...@googlegroups.com
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+bafa7d...@syzkaller.appspotmail.com

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


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