netdev - Re: [syzbot] KMSAN: uninit-value in ax88179_led

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Date:   Fri, 15 Apr 2022 04:54:37 +0300
From:   David Kahurani <k.kahurani@...il.com>
To:     syzbot <syzbot+d3dbdf31fbe9d8f5f311@...kaller.appspotmail.com>
Cc:     arnd@...db.de, Dan Carpenter <dan.carpenter@...cle.com>,
        davem@...emloft.net, Alexander Potapenko <glider@...gle.com>,
        jackychou@...x.com.tw, Jann Horn <jannh@...gle.com>, jgg@...pe.ca,
        kbuild-all@...ts.01.org, kuba@...nel.org,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        lkp@...el.com, netdev@...r.kernel.org, pabeni@...hat.com,
        Pavel Skripkin <paskripkin@...il.com>,
        Phillip Potter <phil@...lpotter.co.uk>,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] KMSAN: uninit-value in ax88179_led_setting

Made some changes, got to test this again just to be sure.

#syz test https://github.com/google/kmsan.git master

On Sat, Apr 9, 2022 at 11:40 AM syzbot
<syzbot+d3dbdf31fbe9d8f5f311@...kaller.appspotmail.com> wrote:
>
> Hello,
>
> syzbot has tested the proposed patch and the reproducer did not trigger any issue:
>
> Reported-and-tested-by: syzbot+d3dbdf31fbe9d8f5f311@...kaller.appspotmail.com
>
> Tested on:
>
> commit:         33d9269e Revert "kernel: kmsan: don't instrument stack..
> git tree:       https://github.com/google/kmsan.git master
> kernel config:  https://syzkaller.appspot.com/x/.config?x=d830111cc3be873
> dashboard link: https://syzkaller.appspot.com/bug?extid=d3dbdf31fbe9d8f5f311
> compiler:       clang version 14.0.0 (/usr/local/google/src/llvm-git-monorepo 2b554920f11c8b763cd9ed9003f4e19b919b8e1f), GNU ld (GNU Binutils for Debian) 2.35.2
> patch:          https://syzkaller.appspot.com/x/patch.diff?x=1130ceb7700000
>
> Note: testing is done by a robot and is best-effort only.

View attachment "0001-net-ax88179-add-proper-error-handling-of-usb-read-er.patch" of type "text/x-patch" (17762 bytes)