Re: linux-next: boot failure after merge of the tip tree

2023-05-26 Thread Ingo Molnar 


* Peter Zijlstra  wrote:

> On Wed, May 24, 2023 at 03:44:59PM +1000, Stephen Rothwell wrote:
> > Hi all,
> > 
> > After merging the tip tree, today's linux-next build (powerpc
> > pseries_le_defconfig) failed to boot like this:
> > 
> >  Built 1 zonelists, mobility grouping on.  Total pages: 32736
> >  Policy zone: Normal
> >  mem auto-init: stack:all(zero), heap alloc:off, heap free:off
> >  Memory: 2027392K/2097152K available (17984K kernel code, 3328K rwdata, 
> > 14784K rodata, 6080K init, 1671K bss, 69760K reserved, 0K cma-reserved)
> > 
> > *crickets*
> > 
> > Bisected to commit
> > 
> >   f4ab23558310 ("slub: Replace cmpxchg_double()")
> > 
> > I have reverted that commit (and the following one) for today.
> 
> Sorry about that; turns out I forgot to test the case where cmpxchg128
> wasn't available.
> 
> Please see:
> 
>   
> https://lkml.kernel.org/r/20230524093246.gp83...@hirez.programming.kicks-ass.net
> 
> As stated there, I'm going to zap tip/locking/core for a few days and
> let this fixed version run through the robots again before re-instating
> it.

Note to -next, this should now be resolved in the tip:auto-latest branch.

Thanks,

Ingo

Re: linux-next: boot failure after merge of the tip tree

2023-05-24 Thread Peter Zijlstra 
On Wed, May 24, 2023 at 03:44:59PM +1000, Stephen Rothwell wrote:
> Hi all,
> 
> After merging the tip tree, today's linux-next build (powerpc
> pseries_le_defconfig) failed to boot like this:
> 
>  Built 1 zonelists, mobility grouping on.  Total pages: 32736
>  Policy zone: Normal
>  mem auto-init: stack:all(zero), heap alloc:off, heap free:off
>  Memory: 2027392K/2097152K available (17984K kernel code, 3328K rwdata, 
> 14784K rodata, 6080K init, 1671K bss, 69760K reserved, 0K cma-reserved)
> 
> *crickets*
> 
> Bisected to commit
> 
>   f4ab23558310 ("slub: Replace cmpxchg_double()")
> 
> I have reverted that commit (and the following one) for today.

Sorry about that; turns out I forgot to test the case where cmpxchg128
wasn't available.

Please see:

  
https://lkml.kernel.org/r/20230524093246.gp83...@hirez.programming.kicks-ass.net

As stated there, I'm going to zap tip/locking/core for a few days and
let this fixed version run through the robots again before re-instating
it.

linux-next: boot failure after merge of the tip tree

2023-05-23 Thread Stephen Rothwell 
Hi all,

After merging the tip tree, today's linux-next build (powerpc
pseries_le_defconfig) failed to boot like this:

 Built 1 zonelists, mobility grouping on.  Total pages: 32736
 Policy zone: Normal
 mem auto-init: stack:all(zero), heap alloc:off, heap free:off
 Memory: 2027392K/2097152K available (17984K kernel code, 3328K rwdata, 14784K 
rodata, 6080K init, 1671K bss, 69760K reserved, 0K cma-reserved)

*crickets*

Bisected to commit

  f4ab23558310 ("slub: Replace cmpxchg_double()")

I have reverted that commit (and the following one) for today.

-- 
Cheers,
Stephen Rothwell


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