Re: Crash on boot with CONFIG_JUMP_LABEL in 6.10

Re: Crash on boot with CONFIG_JUMP_LABEL in 6.10

[Sam James]

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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.

thanks,
sam

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Re: Crash on boot with CONFIG_JUMP_LABEL in 6.10

[Greg KH]

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?

thanks,

greg k-h

Re: Crash on boot with CONFIG_JUMP_LABEL in 6.10

[Sam James]

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

Re: Crash on boot with CONFIG_JUMP_LABEL in 6.10

[matoro]

On 2024-07-31 13:00, Sam James wrote:
> 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

Hi Peter, sorry I'm not quite following, exactly what patches need to be 
applied to fix this?  I checked out the thread you linked but it does not 
apply cleanly to 6.10.