linux-kernel - Re: KMSAN: uninit-value in rt2500usb_probe

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Message-ID: <e1baa592-9c7f-4bc0-dbb0-d76b3afe289f@gmail.com>
Date:   Sat, 26 Sep 2020 12:29:15 +0530
From:   Anant Thazhemadam <anant.thazhemadam@...il.com>
To:     Dmitry Vyukov <dvyukov@...gle.com>
Cc:     Alexander Potapenko <glider@...gle.com>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-kernel-mentees@...ts.linuxfoundation.org,
        syzbot <syzbot+35c80b2190255a410f66@...kaller.appspotmail.com>,
        Andrey Konovalov <andreyknvl@...gle.com>
Subject: Re: KMSAN: uninit-value in rt2500usb_probe_hw


On 26/09/20 12:23 pm, Dmitry Vyukov wrote:
> On Sat, Sep 26, 2020 at 5:25 AM syzbot
> <syzbot+35c80b2190255a410f66@...kaller.appspotmail.com> wrote:
>> Hello,
>>
>> syzbot has tested the proposed patch and the reproducer did not trigger any issue:
>>
>> Reported-and-tested-by: syzbot+35c80b2190255a410f66@...kaller.appspotmail.com
>>
>> Tested on:
>>
>> commit:         c5a13b33 kmsan: clang-format core
>> git tree:       https://github.com/google/kmsan.git master
>> kernel config:  https://syzkaller.appspot.com/x/.config?x=41fca8ac7f9e770a
>> dashboard link: https://syzkaller.appspot.com/bug?extid=35c80b2190255a410f66
>> compiler:       clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81)
>>
>> Note: testing is done by a robot and is best-effort only.
> Hi Anant,
>
> I see you are testing lots of USB bugs. USB subsystem is currently
> broken, testing of any USB bugs will give false "no crash" results,
> see:
> https://lore.kernel.org/linux-kernel-mentees/CACT4Y+YmbmrH9gCCnCzP-FYa-dKxx9qhKZ+RQxi1f-+Hoj1SUg@mail.gmail.com/

Oh, I see. Thank you for letting me know. I'll be sure to keep that in mind, until I hear
otherwise. :)

Thanks,
Anant