syzbot writes:
> syzbot has tested the proposed patch but the reproducer still
> triggered crash:
> divide error in usbnet_update_max_qlen
>
> cdc_ncm 5-1:1.0: setting tx_max = 16384
> divide error: [#1] SMP KASAN
> CPU: 1 PID: 1737 Comm: kworker/1:2 Not tainted 5.3.0-rc7+ #0
> Hardware name
Hello,
syzbot has tested the proposed patch but the reproducer still triggered
crash:
divide error in usbnet_update_max_qlen
cdc_ncm 5-1:1.0: setting tx_max = 16384
divide error: [#1] SMP KASAN
CPU: 1 PID: 1737 Comm: kworker/1:2 Not tainted 5.3.0-rc7+ #0
Hardware name: Google Google Comp
#syz test: https://github.com/google/kasan.git f0df5c1b
>From dd2eb64899d5e695e5e05c674ecbbc3fce01b4b5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B8rn=20Mork?=
Date: Tue, 17 Sep 2019 15:46:03 +0200
Subject: [RFC] cdc_ncm: fix divide error when USB packet size is 0
MIME-Version: 1.0
Content-Ty
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=14cd145960
kernel config: https://syzkaller.appspot.com/x/.
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