netdev - RE: [syzbot] WARNING in rtl8152

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

Message-ID: <bde8fc1229ec41e99ec77f112cc5ee01@realtek.com>
Date:   Fri, 14 May 2021 02:58:00 +0000
From:   Hayes Wang <hayeswang@...ltek.com>
To:     Alan Stern <stern@...land.harvard.edu>
CC:     syzbot <syzbot+95afd23673f5dd295c57@...kaller.appspotmail.com>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "syzkaller-bugs@...glegroups.com" <syzkaller-bugs@...glegroups.com>,
        nic_swsd <nic_swsd@...ltek.com>
Subject: RE: [syzbot] WARNING in rtl8152_probe

Alan Stern <stern@...land.harvard.edu>
> Sent: Thursday, May 13, 2021 10:26 PM
[...]
> Syzbot doesn't test real devices.  It tests emulations, and the emulated
> devices usually behave very strangely and in very peculiar and
> unexpected ways, so as to trigger bugs in the kernel.  That's why the
> USB devices you see in syzbot logs usually have bizarre descriptors.

Do you mean I have to debug for a device which doesn't exist?
I don't understand why I must consider a fake device
which provide unexpected USB descriptor deliberately?

Best Regards,
Hayes