Re: Regression with a0747a859ef6 ("bdi: add error handle for bdi_debug_register")

[Bruno Wolff III]

On Thu, Dec 14, 2017 at 18:09:27 +0800,
 weiping zhang <zhangweiping@xxxxxxxxxxxxxxx> wrote:
> On Thu, Dec 14, 2017 at 02:24:52AM -0600, Bruno Wolff III wrote:
> > On Wed, Dec 13, 2017 at 16:54:17 -0800,
> >  Laura Abbott <labbott@xxxxxxxxxx> wrote:
> > >Hi,
> > >
> > >Fedora got a bug report https://bugzilla.redhat.com/show_bug.cgi?id=1520982
> > >of a boot failure/bug on Linus' master (full bootlog at the bugzilla)
> >
> > I'm available for testing. The problem happens on my x86_64 Dell
> > Workstation, but not an old i386 server or an x86_64 mac hardware
> > based laptop.
>
> Hi,
>
> It seems something wrong with bdi debugfs register, could you help
> test the forllowing debug patch, I add some debug log, no function
> change, thanks.

I'll test it this morning. I'll probably have results in about 7 hrs from now.