Re: [GIT PULL] dma-mapping updates for Linux 6.12

[Christoph Hellwig]

On Sun, Sep 22, 2024 at 01:49:35AM +0800, Xi Ruoyao wrote:
> On Sat, 2024-09-21 at 06:51 -0700, Christoph Hellwig wrote:
> > On Sat, Sep 21, 2024 at 03:56:11PM +0800, Xi Ruoyao wrote:
> > > because the laptop has no serial output.  And the behavior seems not
> > > deterministic.  I have some transcript of messages I photoed in several
> > > boot attempts though:
> > 
> > Can you send me the photos of the messages?  Probably best offlist
> > as the lists don't like attachments.
> 
> I've got something better: one attempt to boot
> b5c58b2fdc427e7958412ecb2de2804a1f7c1572 succeeded and I got a dmesg
> containing some Oops traces.
> 
> The camera does *not* work.  And when I rebooted the system it hung
> (presumably related to these Oops). 

So that oops actually comes from the sounds code and looks unrelated
to DMA.  I suspect that oops is what caused your crashes and thus
messed up the DMA bisection.  Can you try to boot with CONFIG_SND
disabled and see where the bisection for the video issues lands?

(Sorry that all this is such a mess)