Re: [Linux-kernel-mentees] INFO: trying to register non-static key in ath9k_htc_rxep

[Andrey Konovalov via Linux-kernel-mentees <linux-kernel-mentees@lists.linuxfoundation.org>]

On Wed, Sep 23, 2020 at 7:42 PM Brooke Basile <brookebasile@gmail.com> wrote:
>
> On 9/22/20 3:38 AM, Dmitry Vyukov wrote:
> > On Tue, Sep 22, 2020 at 9:26 AM Greg Kroah-Hartman
> > <gregkh@linuxfoundation.org> wrote:
> >>
> >> On Tue, Sep 22, 2020 at 08:49:39AM +0200, Dmitry Vyukov wrote:
> >>> On Tue, Sep 22, 2020 at 8:21 AM syzbot
> >>> <syzbot+4d2d56175b934b9a7bf9@syzkaller.appspotmail.com> wrote:
> >>>>
> >>>> Hello,
> >>>>
> >>>> syzbot has tested the proposed patch and the reproducer did not trigger any issue:
> >>>>
> >>>> Reported-and-tested-by: syzbot+4d2d56175b934b9a7bf9@syzkaller.appspotmail.com
> >>>>
> >>>> Tested on:
> >>>>
> >>>> commit:         98477740 Merge branch 'rcu/urgent' of git://git.kernel.org..
> >>>> git tree:       upstream
> >>>> kernel config:  https://syzkaller.appspot.com/x/.config?x=2c523334171d074
> >>>> dashboard link: https://syzkaller.appspot.com/bug?extid=4d2d56175b934b9a7bf9
> >>>> compiler:       gcc (GCC) 10.1.0-syz 20200507
> >>>>
> >>>> Note: testing is done by a robot and is best-effort only.
> >>>
> >>> Hi Brooke,
> >>>
> >>> As far as I understand, UBS is currently completely broken on upstream
> >>> HEAD, so testing any USB bugs on upstream HEAD will lead to false
> >>> positive results only.
> >>
> >> Broken in what way?  I don't see any bug reports here...
> >
> > I mean this "USB driver ID matching broke":
> > https://groups.google.com/g/syzkaller/c/VKfxh__m05w/m/ArzTtar-AgAJ
> > syzkaller can't test usb, nor reproduce any existing bugs on the upstream tree.
> >
>
> Hi Dmitry,
>
> Thanks for the heads up and for the link to the thread with the information.
>
> I recently fixed the following bug:
> https://syzkaller.appspot.com/bug?id=cabffad18eb74197f84871802fd2c5117b61febf
>
> I tested this on my local syzkaller instance before sending it in to
> syzbot and the kernel panic was resolved, however I did get "-busid- is
> not in match_busid table... skip!" in dmesg-- should this be taken as a
> false positive as well?

Hi Brooke,

Yes, this line means that the kernel is broken and testing USB
programs with syzkaller is impossible.

Thanks!
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