Re: [REGRESSION] [Bug 216859] New: PCI bridge to bus boot hang at enumeration

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On Thu, Jan 26, 2023 at 06:11:24AM -0600, Bjorn Helgaas wrote:
> [+cc folks from 145eed48de27 and framebuffer folks, regression list]
> 
> On Thu, Jan 12, 2023 at 02:08:19PM -0600, Bjorn Helgaas wrote:
> > On Wed, Dec 28, 2022 at 06:02:48AM -0600, Bjorn Helgaas wrote:
> > > On Wed, Dec 28, 2022 at 08:37:52AM +0000, bugzilla-daemon@xxxxxxxxxx wrote:
> > > > https://bugzilla.kernel.org/show_bug.cgi?id=216859
> > > 
> > > >            Summary: PCI bridge to bus boot hang at enumeration
> > > >     Kernel Version: 6.1-rc1
> > > > ...
> > > 
> > > > With Kernel 6.1-rc1 the enumeration process stopped working for me,
> > > > see attachments.
> > > > 
> > > > The enumeration works fine with Kernel 6.0 and below.
> > > > 
> > > > Same problem still exists with v6.1. and v6.2.-rc1
> 
> This is a regression between v6.0 and v6.1-rc1.  Console output during
> boot freezes after nvidiafb deactivates the VGA console.
> 
> It was a lot of work for Zeno, but we finally isolated this console
> hang to 145eed48de27 ("fbdev: Remove conflicting devices on PCI bus").
> 
> The system actually does continue to boot and is accessible via ssh, 
> but the console appears hung, at least for output.  More details in
> the bugzilla starting at
> https://bugzilla.kernel.org/show_bug.cgi?id=216859#c47 .

#regzbot introduced: 145eed48de27
#regzbot dup: https://lore.kernel.org/all/D41A3A42-2412-4722-9090-01565058E525@xxxxxxxxx/



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