RE: [PATCH 4.19 00/42] 4.19.4-stable review

[David Laight]

From: Thomas Voegtle
> Sent: 23 November 2018 15:41
> On Fri, 23 Nov 2018, Greg Kroah-Hartman wrote:
> 
> > On Thu, Nov 22, 2018 at 09:53:35PM +0100, Thomas Voegtle wrote:
> >>
> >> Doesn't compile for me on OpenSuSE 15.0 (gcc 7.3.1):
> >>
> >>   CALL    scripts/checksyscalls.sh
> >>   DESCEND  objtool
> >>   CHK     include/generated/compile.h
> >>   CC [M]  drivers/gpu/drm/i915/i915_gem_gtt.o
> >> drivers/gpu/drm/i915/i915_gem_gtt.c: In function âgen6_dump_ppgttâ:
> >> drivers/gpu/drm/i915/i915_gem_gtt.c:1771:41: error: format â%llxâ expects
> >> argument of type âlong long unsigned intâ, but argument 5 has type âlong
> >> unsigned intâ [-Werror=format=]
> >>     seq_printf(m, "\t\t(%03d, %04d) %08llx: ",
> >>                                     ~~~~~^
> >>                                     %08lx
> >> cc1: all warnings being treated as errors
> >
> > Warnings treated as errors?  That's rough, sorry, don't do that :)
> 
> I had CONFIG_DRM_I915_WERROR=y for whatever reason.
> The whole thing confused me a lot.
> Sorry.

Well, if you compile that code for a 32bit architecture it is likely
to print garbage.

	David

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