Re: Build regressions/improvements in v5.16-rc1

[Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>]

On Mon, Nov 15, 2021 at 4:54 PM Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> wrote:
> Below is the list of build error/warning regressions/improvements in
> v5.16-rc1[1] compared to v5.15[2].
>
> Summarized:
>   - build errors: +20/-13
>   - build warnings: +3/-28
>
> Happy fixing! ;-)
>
> Thanks to the linux-next team for providing the build service.
>
> [1] http://kisskb.ellerman.id.au/kisskb/branch/linus/head/fa55b7dcdc43c1aa1ba12bca9d2dd4318c2a0dbf/ (all 90 configs)
> [2] http://kisskb.ellerman.id.au/kisskb/branch/linus/head/8bb7eca972ad531c9b149c0a51ab43a417385813/ (all 90 configs)
>
>
> *** ERRORS ***
>
> 20 error regressions:
>   + /kisskb/src/arch/parisc/include/asm/jump_label.h: error: expected ':' before '__stringify':  => 33:4, 18:4
>   + /kisskb/src/arch/parisc/include/asm/jump_label.h: error: label 'l_yes' defined but not used [-Werror=unused-label]:  => 38:1, 23:1

    due to static_branch_likely() in crypto/api.c

parisc-allmodconfig

>   + /kisskb/src/drivers/gpu/drm/msm/msm_drv.h: error: "COND" redefined [-Werror]:  => 531
>   + /kisskb/src/lib/zstd/compress/zstd_double_fast.c: error: the frame size of 3252 bytes is larger than 1536 bytes [-Werror=frame-larger-than=]:  => 47:1
>   + /kisskb/src/lib/zstd/compress/zstd_double_fast.c: error: the frame size of 3360 bytes is larger than 1536 bytes [-Werror=frame-larger-than=]:  => 499:1
>   + /kisskb/src/lib/zstd/compress/zstd_double_fast.c: error: the frame size of 5344 bytes is larger than 1536 bytes [-Werror=frame-larger-than=]:  => 334:1
>   + /kisskb/src/lib/zstd/compress/zstd_double_fast.c: error: the frame size of 5380 bytes is larger than 1536 bytes [-Werror=frame-larger-than=]:  => 354:1
>   + /kisskb/src/lib/zstd/compress/zstd_fast.c: error: the frame size of 1824 bytes is larger than 1536 bytes [-Werror=frame-larger-than=]:  => 372:1
>   + /kisskb/src/lib/zstd/compress/zstd_fast.c: error: the frame size of 2224 bytes is larger than 1536 bytes [-Werror=frame-larger-than=]:  => 204:1
>   + /kisskb/src/lib/zstd/compress/zstd_fast.c: error: the frame size of 3800 bytes is larger than 1536 bytes [-Werror=frame-larger-than=]:  => 476:1

parisc-allmodconfig

>   + /kisskb/src/fs/ntfs/aops.c: error: the frame size of 2240 bytes is larger than 2048 bytes [-Werror=frame-larger-than=]:  => 1311:1
>   + /kisskb/src/fs/ntfs/aops.c: error: the frame size of 2304 bytes is larger than 2048 bytes [-Werror=frame-larger-than=]:  => 1311:1
>   + /kisskb/src/fs/ntfs/aops.c: error: the frame size of 2320 bytes is larger than 2048 bytes [-Werror=frame-larger-than=]:  => 1311:1

powerpc-allmodconfig

>   + /kisskb/src/include/linux/compiler_types.h: error: call to '__compiletime_assert_366' declared with attribute error: FIELD_PREP: value too large for the field:  => 335:38

    in drivers/pinctrl/pinctrl-apple-gpio.c

arm64-allmodconfig (gcc8)

>   + /kisskb/src/include/linux/fortify-string.h: error: call to '__read_overflow' declared with attribute error: detected read beyond size of object (1st parameter):  => 263:25, 277:17

    in lib/test_kasan.c

s390-all{mod,yes}config
arm64-allmodconfig (gcc11)

>   + error: modpost: "mips_cm_is64" [drivers/pci/controller/pcie-mt7621.ko] undefined!:  => N/A
>   + error: modpost: "mips_cm_lock_other" [drivers/pci/controller/pcie-mt7621.ko] undefined!:  => N/A
>   + error: modpost: "mips_cm_unlock_other" [drivers/pci/controller/pcie-mt7621.ko] undefined!:  => N/A
>   + error: modpost: "mips_cpc_base" [drivers/pci/controller/pcie-mt7621.ko] undefined!:  => N/A
>   + error: modpost: "mips_gcr_base" [drivers/pci/controller/pcie-mt7621.ko] undefined!:  => N/A

mips-allmodconfig

> 3 warning regressions:
>   + <stdin>: warning: #warning syscall futex_waitv not implemented [-Wcpp]:  => 1559:2

powerpc, m68k, mips, s390, parisc (and probably more)

>   + 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

Yeah, that happens when symbols are changed from tristate to bool...
Will be fixed in 5.17-rc1, with the next defconfig refresh.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds