linux-kernel - Re: [syzbot] INFO: task hung in port100

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Date:   Tue, 22 Jun 2021 19:07:01 +0300
From:   Pavel Skripkin <paskripkin@...il.com>
To:     syzbot <syzbot+abd2e0dafb481b621869@...kaller.appspotmail.com>
Cc:     krzysztof.kozlowski@...onical.com, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] INFO: task hung in port100_probe

On Tue, 22 Jun 2021 08:43:29 -0700
syzbot <syzbot+abd2e0dafb481b621869@...kaller.appspotmail.com> wrote:

> Hello,
> 
> syzbot found the following issue on:
> 
> HEAD commit:    fd0aa1a4 Merge tag 'for-linus' of
> git://git.kernel.org/pub.. git tree:       upstream
> console output:
> https://syzkaller.appspot.com/x/log.txt?x=13e1500c300000 kernel
> config:  https://syzkaller.appspot.com/x/.config?x=7ca96a2d153c74b0
> dashboard link:
> https://syzkaller.appspot.com/bug?extid=abd2e0dafb481b621869 syz
> repro:
> https://syzkaller.appspot.com/x/repro.syz?x=1792e284300000 C
> reproducer:   https://syzkaller.appspot.com/x/repro.c?x=13ad9d48300000
> 
> IMPORTANT: if you fix the issue, please add the following tag to the
> commit: Reported-by:
> syzbot+abd2e0dafb481b621869@...kaller.appspotmail.com
> 
> INFO: task kworker/0:1:7 blocked for more than 143 seconds.
>       Not tainted 5.13.0-rc6-syzkaller #0
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this
> message. task:kworker/0:1     state:D stack:25584 pid:    7 ppid:
> 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event

Hmmm, maybe this will work


#syz test
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master




With regards,
Pavel Skripkin

View attachment "0001-nfc-add-missing-complete-to-avoid-hung.patch" of type "text/x-patch" (1527 bytes)