On Wed, Sep 23, 2020 at 7:42 PM Brooke Basile <brookebasile@xxxxxxxxx> wrote: > > On 9/22/20 3:38 AM, Dmitry Vyukov wrote: > > On Tue, Sep 22, 2020 at 9:26 AM Greg Kroah-Hartman > > <gregkh@xxxxxxxxxxxxxxxxxxx> 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@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > >>>> > >>>> Hello, > >>>> > >>>> syzbot has tested the proposed patch and the reproducer did not trigger any issue: > >>>> > >>>> Reported-and-tested-by: syzbot+4d2d56175b934b9a7bf9@xxxxxxxxxxxxxxxxxxxxxxxxx > >>>> > >>>> 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!
