Re: INFO: task hung in wdm_flush

[Dmitry Vyukov]

> On Mon, Feb 10, 2020 at 4:03 PM Tetsuo Handa
> <penguin-kernel@xxxxxxxxxxxxxxxxxxx> wrote:
> >
> > On 2020/02/10 21:46, Tetsuo Handa wrote:
> > > On 2020/02/10 19:09, Dmitry Vyukov wrote:
> > >> You may also try on the exact commit the bug was reported, because
> > >> usb-fuzzer is tracking branch, things may change there.
> > >
> > > OK. I explicitly tried
> > >
> > >   #syz test: https://github.com/google/kasan.git e5cd56e94edde38ca4dafae5a450c5a16b8a5f23
> > >
> > > but syzbot still cannot reproduce this bug using the reproducer...
> >
> > It seems that there is non-trivial difference between kernel config in dashboard
> > and kernel config in "syz test:" mails. Maybe that's the cause...


syzkaller runs oldconfig when building any kernels:
https://github.com/google/syzkaller/blob/master/pkg/build/linux.go#L56
Is that difference what oldconfig produces?