linux-kernel - Re: [syzbot] [media?] WARNING in smsusb_term

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Date:   Wed, 1 Mar 2023 19:29:42 +0800 (GMT+08:00)
From:   duoming@....edu.cn
To:     syzbot <syzbot+40ac6e73326e79ee8ecb@...kaller.appspotmail.com>
Cc:     hverkuil-cisco@...all.nl, linux-kernel@...r.kernel.org,
        linux-media@...r.kernel.org, mchehab@...nel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [media?] WARNING in smsusb_term_device

Hello,

On Sun, 26 Feb 2023 18:07:20 -0800 syzbot wrote:

> syzbot has bisected this issue to:
> 
> commit ebad8e731c1c06adf04621d6fd327b860c0861b5
> Author: Duoming Zhou <duoming@....edu.cn>
> Date:   Mon Jan 23 02:04:38 2023 +0000
> 
>     media: usb: siano: Fix use after free bugs caused by do_submit_urb
> 
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1687af1cc80000
> start commit:   8232539f864c Add linux-next specific files for 20230225
> git tree:       linux-next
> final oops:     https://syzkaller.appspot.com/x/report.txt?x=1587af1cc80000
> console output: https://syzkaller.appspot.com/x/log.txt?x=1187af1cc80000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=4fe68735401a6111
> dashboard link: https://syzkaller.appspot.com/bug?extid=40ac6e73326e79ee8ecb
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=13ba7cb0c80000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16734964c80000
> 
> Reported-by: syzbot+40ac6e73326e79ee8ecb@...kaller.appspotmail.com
> Fixes: ebad8e731c1c ("media: usb: siano: Fix use after free bugs caused by do_submit_urb")

Thanks for reporting this issue! I have sent a patch to fix it. The link is below:

https://patchwork.linuxtv.org/project/linux-media/patch/20230301091813.82543-1-duoming@zju.edu.cn/

Best regards,
Duoming Zhou