linux-kernel - Re: Build regressions/improvements in v5.17-rc4

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Date:   Tue, 15 Feb 2022 13:13:53 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>,
        linux-kernel@...r.kernel.org
Subject: Re: Build regressions/improvements in v5.17-rc4

Hi Geert,

On 2/14/22 01:37, Geert Uytterhoeven wrote:
> Below is the list of build error/warning regressions/improvements in
> v5.17-rc4[1] compared to v5.16[2].
> 
> Summarized:
>   - build errors: +14/-2
>   - build warnings: +23/-25
> 
> JFYI, when comparing v5.17-rc4[1] to v5.17-rc3[3], the summaries are:
>   - build errors: +1/-0
>   - build warnings: +0/-0
> 
> Note that there may be false regressions, as some logs are incomplete.
> Still, they're build errors/warnings.
> 
> Happy fixing! ;-)
> 
> Thanks to the linux-next team for providing the build service.
> 
> [1] http://kisskb.ellerman.id.au/kisskb/branch/linus/head/754e0b0e35608ed5206d6a67a791563c631cec07/ (all 99 configs)
> [2] http://kisskb.ellerman.id.au/kisskb/branch/linus/head/df0cc57e057f18e44dac8e6c18aba47ab53202f9/ (98 out of 99 configs)
> [3] http://kisskb.ellerman.id.au/kisskb/branch/linus/head/dfd42facf1e4ada021b939b4e19c935dcdd55566/ (all 99 configs)
> 
> 
> *** ERRORS ***
> 


> *** WARNINGS ***
> 
> 23 warning regressions:
>   + modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qed/qed.o(.data+0x14410): Section mismatch in reference from the variable qed_mfw_legacy_maps to the variable .init.rodata:qed_mfw_legacy_bb_100g:  => N/A
>   + modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qed/qed.o(.data+0x14428): Section mismatch in reference from the variable qed_mfw_legacy_maps to the variable .init.rodata:qed_mfw_legacy_bb_100g:  => N/A
>   + modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qed/qed.o(.data+0x14440): Section mismatch in reference from the variable qed_mfw_legacy_maps to the variable .init.rodata:qed_mfw_legacy_bb_100g:  => N/A
>   + modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qed/qed.o(.data+0x14458): Section mismatch in reference from the variable qed_mfw_legacy_maps to the variable .init.rodata:qed_mfw_legacy_bb_100g:  => N/A
>   + modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qed/qed.o(.data+0x14470): Section mismatch in reference from the variable qed_mfw_legacy_maps to the variable .init.rodata:qed_mfw_legacy_bb_100g:  => N/A
>   + modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qed/qed.o(.data+0x14488): Section mismatch in reference from the variable qed_mfw_legacy_maps to the variable .init.rodata:qed_mfw_legacy_bb_100g:  => N/A
>   + modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qed/qed.o(.data+0x144a0): Section mismatch in reference from the variable qed_mfw_legacy_maps to the variable .init.rodata:qed_mfw_legacy_bb_100g:  => N/A
>   + modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qed/qed.o(.data+0x144f0): Section mismatch in reference from the variable qed_mfw_ext_maps to the variable .init.rodata:qed_mfw_legacy_bb_100g:  => N/A
>   + modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qed/qed.o(.data+0x14508): Section mismatch in reference from the variable qed_mfw_ext_maps to the variable .init.rodata:qed_mfw_legacy_bb_100g:  => N/A
>   + modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qed/qed.o(.data+0x14520): Section mismatch in reference from the variable qed_mfw_ext_maps to the variable .init.rodata:qed_mfw_legacy_bb_100g:  => N/A
>   + modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qed/qed.o(.data+0x14538): Section mismatch in reference from the variable qed_mfw_ext_maps to the variable .init.rodata:qed_mfw_legacy_bb_100g:  => N/A
>   + modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qed/qed.o(.data+0x14550): Section mismatch in reference from the variable qed_mfw_ext_maps to the variable .init.rodata:qed_mfw_legacy_bb_100g:  => N/A
>   + modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qed/qed.o(.data+0x14568): Section mismatch in reference from the variable qed_mfw_ext_maps to the variable .init.rodata:qed_mfw_legacy_bb_100g:  => N/A
>   + modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qed/qed.o(.data+0x14580): Section mismatch in reference from the variable qed_mfw_ext_maps to the variable .init.rodata:qed_mfw_legacy_bb_100g:  => N/A
>   + modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qed/qed.o(.data+0x14598): Section mismatch in reference from the variable qed_mfw_ext_maps to the variable .init.rodata:qed_mfw_legacy_bb_100g:  => N/A
>   + modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qede/qede.o(.data+0x4790): Section mismatch in reference from the variable qede_forced_speed_maps to the variable .init.rodata:qede_forced_speed_100000:  => N/A
>   + modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qede/qede.o(.data+0x47a8): Section mismatch in reference from the variable qede_forced_speed_maps to the variable .init.rodata:qede_forced_speed_100000:  => N/A
>   + modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qede/qede.o(.data+0x47c0): Section mismatch in reference from the variable qede_forced_speed_maps to the variable .init.rodata:qede_forced_speed_100000:  => N/A
>   + modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qede/qede.o(.data+0x47d8): Section mismatch in reference from the variable qede_forced_speed_maps to the variable .init.rodata:qede_forced_speed_100000:  => N/A
>   + modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qede/qede.o(.data+0x47f0): Section mismatch in reference from the variable qede_forced_speed_maps to the variable .init.rodata:qede_forced_speed_100000:  => N/A
>   + modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qede/qede.o(.data+0x4808): Section mismatch in reference from the variable qede_forced_speed_maps to the variable .init.rodata:qede_forced_speed_100000:  => N/A
>   + modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qede/qede.o(.data+0x4820): Section mismatch in reference from the variable qede_forced_speed_maps to the variable .init.rodata:qede_forced_speed_100000:  => N/A
>   + modpost: WARNING: modpost: vmlinux.o(.text.unlikely+0x4540): Section mismatch in reference from the function __trace_event_discard_commit() to the variable .init.data:initcall_level_names:  => N/A

This is a little confusing. Was there a problem with qed and qede network drivers?
Is it still a problem?
Many of the lines above and below are very similar.

If there is still a problem, what $ARCH and config(s) cause it?
I can't reproduce it on 11 $ARCH tries.
Or maybe it is compiler-specific also.

> 25 warning improvements:
>   - arch/m68k/configs/multi_defconfig: warning: symbol value 'm' invalid for MCTP: 322 => 
>   - arch/m68k/configs/sun3_defconfig: warning: symbol value 'm' invalid for MCTP: 295 => 
>   - modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qed/qed.o(.data+0x136d0): Section mismatch in reference from the variable qed_mfw_legacy_maps to the variable .init.rodata:qed_mfw_legacy_bb_100g: N/A => 
>   - modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qed/qed.o(.data+0x136e8): Section mismatch in reference from the variable qed_mfw_legacy_maps to the variable .init.rodata:qed_mfw_legacy_bb_100g: N/A => 
>   - modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qed/qed.o(.data+0x13700): Section mismatch in reference from the variable qed_mfw_legacy_maps to the variable .init.rodata:qed_mfw_legacy_bb_100g: N/A => 
>   - modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qed/qed.o(.data+0x13718): Section mismatch in reference from the variable qed_mfw_legacy_maps to the variable .init.rodata:qed_mfw_legacy_bb_100g: N/A => 
>   - modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qed/qed.o(.data+0x13730): Section mismatch in reference from the variable qed_mfw_legacy_maps to the variable .init.rodata:qed_mfw_legacy_bb_100g: N/A => 
>   - modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qed/qed.o(.data+0x13748): Section mismatch in reference from the variable qed_mfw_legacy_maps to the variable .init.rodata:qed_mfw_legacy_bb_100g: N/A => 
>   - modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qed/qed.o(.data+0x13760): Section mismatch in reference from the variable qed_mfw_legacy_maps to the variable .init.rodata:qed_mfw_legacy_bb_100g: N/A => 
>   - modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qed/qed.o(.data+0x137b0): Section mismatch in reference from the variable qed_mfw_ext_maps to the variable .init.rodata:qed_mfw_legacy_bb_100g: N/A => 
>   - modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qed/qed.o(.data+0x137c8): Section mismatch in reference from the variable qed_mfw_ext_maps to the variable .init.rodata:qed_mfw_legacy_bb_100g: N/A => 
>   - modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qed/qed.o(.data+0x137e0): Section mismatch in reference from the variable qed_mfw_ext_maps to the variable .init.rodata:qed_mfw_legacy_bb_100g: N/A => 
>   - modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qed/qed.o(.data+0x137f8): Section mismatch in reference from the variable qed_mfw_ext_maps to the variable .init.rodata:qed_mfw_legacy_bb_100g: N/A => 
>   - modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qed/qed.o(.data+0x13810): Section mismatch in reference from the variable qed_mfw_ext_maps to the variable .init.rodata:qed_mfw_legacy_bb_100g: N/A => 
>   - modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qed/qed.o(.data+0x13828): Section mismatch in reference from the variable qed_mfw_ext_maps to the variable .init.rodata:qed_mfw_legacy_bb_100g: N/A => 
>   - modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qed/qed.o(.data+0x13840): Section mismatch in reference from the variable qed_mfw_ext_maps to the variable .init.rodata:qed_mfw_legacy_bb_100g: N/A => 
>   - modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qed/qed.o(.data+0x13858): Section mismatch in reference from the variable qed_mfw_ext_maps to the variable .init.rodata:qed_mfw_legacy_bb_100g: N/A => 
>   - modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qede/qede.o(.data+0x4610): Section mismatch in reference from the variable qede_forced_speed_maps to the variable .init.rodata:qede_forced_speed_100000: N/A => 
>   - modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qede/qede.o(.data+0x4628): Section mismatch in reference from the variable qede_forced_speed_maps to the variable .init.rodata:qede_forced_speed_100000: N/A => 
>   - modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qede/qede.o(.data+0x4640): Section mismatch in reference from the variable qede_forced_speed_maps to the variable .init.rodata:qede_forced_speed_100000: N/A => 
>   - modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qede/qede.o(.data+0x4658): Section mismatch in reference from the variable qede_forced_speed_maps to the variable .init.rodata:qede_forced_speed_100000: N/A => 
>   - modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qede/qede.o(.data+0x4670): Section mismatch in reference from the variable qede_forced_speed_maps to the variable .init.rodata:qede_forced_speed_100000: N/A => 
>   - modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qede/qede.o(.data+0x4688): Section mismatch in reference from the variable qede_forced_speed_maps to the variable .init.rodata:qede_forced_speed_100000: N/A => 
>   - modpost: WARNING: modpost: drivers/net/ethernet/qlogic/qede/qede.o(.data+0x46a0): Section mismatch in reference from the variable qede_forced_speed_maps to the variable .init.rodata:qede_forced_speed_100000: N/A => 
>   - modpost: WARNING: modpost: vmlinux.o(.text.unlikely+0x45e4): Section mismatch in reference from the function __trace_event_discard_commit() to the variable .init.data:initcall_level_names: N/A => 

thanks.
-- 
~Randy