Re: Crash on boot with CONFIG_JUMP_LABEL in 6.10

[Sam James <sam@gentoo.org>]

Greg KH <gregkh@linuxfoundation.org> writes:

> On Wed, Jul 31, 2024 at 02:31:55PM +0100, Sam James wrote:
>> Peter Zijlstra <peterz@infradead.org> writes:
>> 
>> > On Tue, Jul 30, 2024 at 08:36:13PM -0400, matoro wrote:
>> >> On 2024-07-30 09:50, John David Anglin wrote:
>> >> > On 2024-07-30 9:41 a.m., John David Anglin wrote:
>> >> > > On 2024-07-29 7:11 p.m., matoro wrote:
>> >> > > > Hi all, just bumped to the newest mainline starting with 6.10.2
>> >> > > > and immediately ran into a crash on boot. Fully reproducible,
>> >> > > > reverting back to last known good (6.9.8) resolves the issue. 
>> >> > > > Any clue what's going on here?
>> >> > > > I can provide full boot logs, start bisecting, etc if needed...
>> >> > > 6.10.2 built and booted okay on my c8000 with the attached config.
>> >> > > You could start
>> >> > > with it and incrementally add features to try to identify the one
>> >> > > that causes boot failure.
>> >> > Oh, I have an experimental clocksource patch installed.  You will need
>> >> > to regenerate config
>> >> > with "make oldconfig" to use the current timer code.  Probably, this
>> >> > would happen automatically.
>> >> > > 
>> >> > > Your config would be needed to duplicate.    Full boot log would also help.
>> >> > 
>> >> > Dave
>> >> 
>> >> Hi Dave, bisecting quickly revealed the cause here.
>> >
>> > https://lkml.kernel.org/r/20240731105557.GY33588@noisy.programming.kicks-ass.net
>> 
>> Greg, I see tglx's jump_label fix is queued for 6.10.3 but this one
>> isn't as it came too late. Is there any chance of chucking it in? It's
>> pretty nasty.
>
> What is the git id of this in Linus's tree?

Ah, you're right, it's not there. Sorry, I thought I'd seen it pulled.

>
> thanks,
>
> greg k-h