netdev - Re: divide error in usbnet_update_max

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Message-ID: <1568719373.23075.4.camel@suse.com>
Date:   Tue, 17 Sep 2019 13:22:53 +0200
From:   Oliver Neukum <oneukum@...e.com>
To:     syzbot <syzbot+6102c120be558c885f04@...kaller.appspotmail.com>,
        davem@...emloft.net, andreyknvl@...gle.com,
        syzkaller-bugs@...glegroups.com, linux-kernel@...r.kernel.org,
        linux-usb@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: divide error in usbnet_update_max_qlen

Am Montag, den 16.09.2019, 06:29 -0700 schrieb syzbot:
> Hello,
> 
> syzbot found the following crash on:
> 
> HEAD commit:    f0df5c1b usb-fuzzer: main usb gadget fuzzer driver
> git tree:       https://github.com/google/kasan.git usb-fuzzer
> console output: https://syzkaller.appspot.com/x/log.txt?x=117659fa600000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=5c6633fa4ed00be5
> dashboard link: https://syzkaller.appspot.com/bug?extid=6102c120be558c885f04
> compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12107ba9600000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=146014e6600000
> 
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+6102c120be558c885f04@...kaller.appspotmail.com

#syz test: https://github.com/google/kasan.git f0df5c1b
View attachment "0001-usbnet-sanity-checking-of-packet-sizes.patch" of type "text/x-patch" (1073 bytes)