Re: [Regression][BISECTED] kernel boot hang after 19898ce9cf8a ("wifi: iwlwifi: split 22000.c into multiple files")

[Larry Finger]

On 7/9/23 08:27, Zhang, Rui wrote:
> On Sat, 2023-07-08 at 16:17 +0200, Thorsten Leemhuis wrote:
> > On 07.07.23 12:55, Linux regression tracking (Thorsten Leemhuis)
> > wrote:
> > > On 07.07.23 10:25, Zhang, Rui wrote:
> > > > I run into a NULL pointer dereference and kernel boot hang after
> > > > switching to latest upstream kernel, and git bisect shows that
> > > > below
> > > > commit is the first offending commit, and I have confirmed that
> > > > commit
> > > > 19898ce9cf8a has the issue while 19898ce9cf8a~1 does not.
> > >
> > > FWIW, this is the fourth such report about this that I'm aware of.
> > >
> > > The first is this one (with two affected users afaics):
> > > https://bugzilla.kernel.org/show_bug.cgi?id=217622
> > >
> > > The second is this one:
> > > https://lore.kernel.org/all/CAAJw_Zug6VCS5ZqTWaFSr9sd85k%3DtyPm9DEE%2BmV%3DAKoECZM%2BsQ@xxxxxxxxxxxxxx/
> > >
> > > The third:
> > > https://lore.kernel.org/all/9274d9bd3d080a457649ff5addcc1726f08ef5b2.camel@xxxxxxxxxxx/
> > >
> > > And in the past few days two people from Fedora land talked to me
> > > on IRC
> > > with problems that in retrospective might be caused by this as
> > > well.
> >
> > I got confirmation: one of those cases is also caused by 19898ce9cf8a
> > But I write for a different reason:
> >
> > Larry (now CCed) looked at the culprit and spotted something that
> > looked
> > suspicious to him; he posted a patch and looks for testers:
> > https://lore.kernel.org/all/0068af47-e475-7e8d-e476-c374e90dff5f@xxxxxxxxxxxx/
>
> I applied this patch but the problem still exists.
>
> thanks,
> rui

Rui,

I am not surprised that the patch did not help. I guess you will need to stay 
with kernel 6.3.X until the Intel developers return from their summer break.

Larry