Mass-building defconfigs: many fail with assembler errors

[Jan-Benedict Glaw]

Hi Segher!

On Wed, 2022-12-14 10:00:25 +0100, Jan-Benedict Glaw <jbglaw at lug-owl.de> wrote:
> On Tue, 2022-12-13 11:00:45 +0100, Jan-Benedict Glaw <jbglaw at lug-owl.de> wrote:
> > On Mon, 2022-12-12 18:26:13 -0600, Segher Boessenkool <segher at kernel.crashing.org> wrote:
> > > On Mon, Dec 12, 2022 at 10:51:17PM +0100, Jan-Benedict Glaw wrote:
> > > > 	Compiler ICEs (during GIMPLE pass: ccp) in align.c:
[...]
> Submitted as https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108095:
[...]

Jakub's patch seems to work (though I cannot *verify* the kernel
images on real hardware), so that will presumably fix these
configations (from the ICE point of view):

linux-powerpc-adder875_defconfig
linux-powerpc-akebono_defconfig
linux-powerpc-lite5200b_defconfig
linux-powerpc-mgcoge_defconfig
linux-powerpc-motionpro_defconfig
linux-powerpc-mpc5200_defconfig
linux-powerpc-mpc8272_ads_defconfig
linux-powerpc-ppc6xx_defconfig
linux-powerpc-tqm5200_defconfig
linux-powerpc-tqm8xx_defconfig
linux-powerpc-warp_defconfig
linux-powerpc-pq2fads_defconfig
linux-powerpc-ps3_defconfig
linux-powerpc-mpc885_ads_defconfig
linux-powerpc-ep8248e_defconfig
linux-powerpc-ep88xc_defconfig
linux-powerpc-iss476-smp_defconfig
linux-powerpc-fsp2_defconfig
linux-powerpc-currituck_defconfig


So we have these remaining build issues:

linux-powerpc-cell_defconfig           bad asm (arch/powerpc/boot/pseries-head.S)
linux-powerpc-mvme5100_defconfig       bad asm (arch/powerpc/kernel/epapr_hcalls.S)
linux-powerpc-asp8347_defconfig        bad asm (arch/powerpc/kernel/pmc.c)
linux-powerpc-ppc6xx_defconfig         bad asm (arch/powerpc/kernel/pmc.c)
linux-powerpc-ppc64e_defconfig         bad asm (arch/powerpc/kernel/vdso/gettimeofday.S)
linux-powerpc-corenet64_smp_defconfig  bad asm (arch/powerpc/kernel/vdso/gettimeofday.S)

I do *not* have CROSS32_COMPILE=... set for my builds. Maybe that
could cure at least the issues within the ./boot and ./kernel/vdso
directories? Let's try that...  But I guess that won't help for the
other two remaining files (arch/powerpc/kernel/{epapr_hcalls.S,pmc.c).


linux-powerpc-pseries_defconfig         sstep (out of array bounds)
linux-powerpc-powernv_defconfig         sstep
linux-powerpc-ppc64_defconfig           sstep
linux-powerpc-pseries_le_defconfig      sstep
linux-powerpc-ppc64le_defconfig         sstep
linux-powerpc-ppc64le_guest_defconfig   sstep
linux-powerpc-ppc64_guest_defconfig     sstep
linux-powerpc-powernv_be_defconfig      sstep

My first guess on these is that it's a wrong warning. The union's
`u8 b[2 * sizeof(double)]` seems to be large enough.


linux-powerpc-akebono_defconfig         ahci (BUILD_BUG_ON failed: sizeof(_s) > sizeof(long))
linux-powerpc-xes_mpc85xx_defconfig     ahci
linux-powerpc-ge_imp3a_defconfig        ahci
linux-powerpc-mpc85xx_defconfig         ahci
linux-powerpc-mpc85xx_smp_defconfig     ahci
linux-powerpc-corenet32_smp_defconfig   ahci
linux-powerpc-mpc86xx_defconfig         ahci
linux-powerpc-mpc86xx_smp_defconfig     ahci

I've seen the AHCI issue on other (non-powerpc) builds as well,
haven't looked into this so I won't guess about whether this is a real
bug or a compiler issue.

Thanks,
  Jan-Benedict

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