Re: linux-next: ia64 allmodconfig

[Robin Holt <holt@sgi.com>]

On Fri, Aug 22, 2008 at 11:00:10AM +0300, Pekka Enberg wrote:
> On Thu, 2008-08-21 at 22:31 -0500, Robin Holt wrote:
> > Argh,  I forgot to add the relavent people.
> > 
> > Robin
> > 
> > On Thu, Aug 21, 2008 at 10:29:31PM -0500, Robin Holt wrote:
> > > [holt@robinlt allmodconfig]$ git-bisect good
> > > e63352fa06fb8c476e56e51323d80f2e7baee67f is first bad commit
> > > commit e63352fa06fb8c476e56e51323d80f2e7baee67f
> > > Author: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
> > > Date:   Tue Aug 19 20:43:26 2008 +0300
> > > 
> > >     kmemtrace: SLUB hooks.
> > >     
> > >     This adds hooks for the SLUB allocator, to allow tracing with kmemtrace.
> > >     
> > >     Signed-off-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
> > >     Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
> > > 
> > > :040000 040000 913348ac82982bd048439179f5d9e2231cc42ee6 984c6232d4eb257d8b31fe104e8731d8d5d6af18 M	include
> > > :040000 040000 eca09754017963bda58bc53e2863f59431df0ea7 92bc3efb5a7b9bc254f17def2c31b3c0a030122e M	mm
> > > 
> > > 
> > > To sum up, This commit when compiled for IA64 using Andrew's gcc 3.4.5
> > > cross compiler and allmodconfig results in a build failure with:
> > > 
> > > arch/ia64/kernel/built-in.o(.text+0x4852): In function `efi_initialize_iomem_resources':
> > > /work/git-linus/allmodconfig/arch/ia64/kernel/efi.c:1200: undefined reference to `__ia64_save_stack_nonlocal'
> > > arch/ia64/kernel/built-in.o(.text+0x12992): In function `pfm_context_create':
> > > /work/git-linus/allmodconfig/arch/ia64/kernel/perfmon.c:2683: undefined reference to `__ia64_save_stack_nonlocal'
> > > arch/ia64/kernel/built-in.o(.text+0x1ba22): In function `sys_perfmonctl':
> > > /work/git-linus/allmodconfig/arch/ia64/kernel/perfmon.c:4808: undefined reference to `__ia64_save_stack_nonlocal'
> > > arch/ia64/kernel/built-in.o(.text+0x379a2): In function `dup_state_stack':
> > > /work/git-linus/allmodconfig/arch/ia64/kernel/unwind.c:645: undefined reference to `__ia64_save_stack_nonlocal'
> > > arch/ia64/kernel/built-in.o(.text+0x37ec2): In function `desc_prologue':
> > > /work/git-linus/allmodconfig/arch/ia64/kernel/unwind.c:809: undefined reference to `__ia64_save_stack_nonlocal'
> > > arch/ia64/kernel/built-in.o(.text+0x3a822):/work/git-linus/allmodconfig/arch/ia64/kernel/unwind_decoder.c:368: more undefined references to `__ia64_save_stack_nonlocal' follow
> > > 
> > > With gcc 4.1.2 it compiles fine.
> 
> So efi_initialize_iomem_resources calls kzalloc() which calls an inline
> kmalloc() function. Is this with our without CONFIG_KMEMTRACE enabled?
> Any idea what this '__ia64_save_stack_nonlocal' thing is?

This failed with either CONFIG_KMEMTRACE =y or =n.

> Eduard, did you have plans to move the hooks out-of-line as suggested by
> Christoph? That patch might "cure" this thing here...

I probably could not test this until the weekend at the earliest.  If you
would like to test it yourself, just git-checkout the linux-next/master
tree and use Andrew's cross compiler to make allmodconfig and make
compressed.

Thanks,
Robin