Re: [PATCH 00/33] Compile-time stack metadata validation

From	Josh Poimboeuf <jpoimboe@redhat.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH 00/33] Compile-time stack metadata validation
Date	2016-02-24 17:40 +0100
Message-ID	<r5KDO-7ce-55@gated-at.bofh.it> (permalink)
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On Wed, Feb 24, 2016 at 08:40:54AM +0100, Ingo Molnar wrote:
> 
> * Josh Poimboeuf <jpoimboe@redhat.com> wrote:
> 
> > Hi Ingo,
> > 
> > On Tue, Feb 23, 2016 at 09:14:06AM +0100, Ingo Molnar wrote:
> > > So I tried out this latest stacktool series and it looks mostly good for an 
> > > upstream merge.
> > > 
> > > To help this effort move forward I've applied the preparatory/fix patches that are 
> > > part of this series to tip:x86/debug - that's 26 out of 31 patches. (I've 
> > > propagated all the acks that the latest submission got into the changelogs.)
> > 
> > Thanks very much for your review and for applying the fixes!
> > 
> > A few issues relating to the merge:
> > 
> > - The tip:x86/debug branch fails to build because it depends on
> >   ec5186557abb ("x86/asm: Add C versions of frame pointer macros") which
> >   is in tip:x86/asm.
> 
> Indeed...

FYI, v17 will be based on tip:x86/debug.  But note that, when run
against that branch, it'll spit out a lot of these warnings:

  objtool: arch/x86/ia32/sys_ia32.o: __ex_table size not a multiple of 12
  objtool: arch/x86/ia32/ia32_signal.o: __ex_table size not a multiple of 12
  objtool: arch/x86/entry/common.o: __ex_table size not a multiple of 12

Those warnings mean it's expecting the new exception table format which
was added in:

  548acf19234d ("x86/mm: Expand the exception table logic to allow new handling options")

So that commit is needed to avoid the warnings.

Thanks!

-- 
Josh

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Re: [PATCH 00/33] Compile-time stack metadata validation Ingo Molnar <mingo@kernel.org> - 2016-02-23 09:20 +0100
  Re: [PATCH 00/33] Compile-time stack metadata validation Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-02-23 15:30 +0100
    Re: [PATCH 00/33] Compile-time stack metadata validation Josh Poimboeuf <jpoimboe@redhat.com> - 2016-02-23 16:10 +0100
      Re: [PATCH 00/33] Compile-time stack metadata validation Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-02-23 16:30 +0100
  Re: [PATCH 00/33] Compile-time stack metadata validation Josh Poimboeuf <jpoimboe@redhat.com> - 2016-02-23 16:10 +0100
    Re: [PATCH 00/33] Compile-time stack metadata validation Ingo Molnar <mingo@kernel.org> - 2016-02-24 08:50 +0100
      Re: [PATCH 00/33] Compile-time stack metadata validation Josh Poimboeuf <jpoimboe@redhat.com> - 2016-02-24 17:40 +0100

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