Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1517787

Re: [PATCH 1/3] kbuild: add -fno-PIE

Show all headers | View raw

* Michal Marek <mmarek@suse.com> wrote:

> On Fri, Nov 04, 2016 at 07:39:38PM +0100, Sebastian Andrzej Siewior wrote:
> > Debian started to build the gcc with -fPIE by default so the kernel
> > build ends before it starts properly with:
> > |kernel/bounds.c:1:0: error: code model kernel does not support PIC mode
> > 
> > Also add to KBUILD_AFLAGS due to:
> > 
> > |gcc -Wp,-MD,arch/x86/entry/vdso/vdso32/.note.o.d … -mfentry -DCC_USING_FENTRY … vdso/vdso32/note.S
> > |arch/x86/entry/vdso/vdso32/note.S:1:0: sorry, unimplemented: -mfentry isn’t supported for 32-bit in combination with -fpic
> > 
> > Tagging it stable so it is possible to compile recent stable kernels as
> > well.
> > 
> > Cc: stable@vger.kernel.org
> > Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
> > ---
> >  Makefile | 2 ++
> >  1 file changed, 2 insertions(+)
> > 
> > diff --git a/Makefile b/Makefile
> > index a2650f9c6a25..d61145ebf498 100644
> > --- a/Makefile
> > +++ b/Makefile
> > @@ -622,6 +622,8 @@ include arch/$(SRCARCH)/Makefile
> >  KBUILD_CFLAGS	+= $(call cc-option,-fno-delete-null-pointer-checks,)
> >  KBUILD_CFLAGS	+= $(call cc-disable-warning,maybe-uninitialized,)
> >  KBUILD_CFLAGS	+= $(call cc-disable-warning,frame-address,)
> > +KBUILD_CFLAGS	+= $(call cc-option,-fno-PIE)
> > +KBUILD_AFLAGS	+= $(call cc-option,-fno-PIE)
> 
> Bad compiler. No pie for you.
> 
> I applied this one to kbuild.git. How about 2/3 and 3/3. Will these be
> merged via tip.git or shall I apply them as well?

I'd suggest applying them to the kbuild tree, as they are related.

Thanks,

	Ingo

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

-fno-PIE, take #3 Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-11-04 19:50 +0100
  [PATCH 1/3] kbuild: add -fno-PIE Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-11-04 19:50 +0100
    Re: [PATCH 1/3] kbuild: add -fno-PIE Michal Marek <mmarek@suse.com> - 2016-11-08 23:20 +0100
      Re: [PATCH 1/3] kbuild: add -fno-PIE Ingo Molnar <mingo@kernel.org> - 2016-11-09 07:20 +0100
        Re: [PATCH 1/3] kbuild: add -fno-PIE Michal Marek <mmarek@suse.com> - 2016-11-09 22:30 +0100
          Re: [PATCH 1/3] kbuild: add -fno-PIE Ingo Molnar <mingo@kernel.org> - 2016-11-10 10:30 +0100
  [PATCH 3/3] x86/kexec: add -fno-PIE Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-11-04 19:50 +0100
  [PATCH 2/3] scripts/has-stack-protector: add -fno-PIE Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-11-04 19:50 +0100
  Re: -fno-PIE, take #3 Theodore Ts'o <tytso@mit.edu> - 2016-11-07 07:40 +0100
  Re: -fno-PIE, take #3 "H. Peter Anvin" <hpa@zytor.com> - 2016-11-07 23:40 +0100
  Re: -fno-PIE, take #3 Borislav Petkov <bp@alien8.de> - 2016-11-08 14:50 +0100
  Re: -fno-PIE, take #3 Ben Hutchings <ben@decadent.org.uk> - 2016-11-09 00:00 +0100

csiph-web