Re: next build: 208 builds: 3 failed, 205 passed, 5 errors, 23 warnings (next-20170215)

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On Wed, Feb 15, 2017 at 9:30 AM, kernelci.org bot <bot@xxxxxxxxxxxx> wrote:
> next build: 208 builds: 3 failed, 205 passed, 5 errors, 23 warnings

> Errors and Warnings Detected:
>
> arm64: gcc version 5.3.1 20160412 (Linaro GCC 5.3-2016.05)
> defconfig+CONFIG_KASAN=y 4 warnings
> arm: gcc version 5.3.1 20160412 (Linaro GCC 5.3-2016.05)
> allmodconfig 7 warnings
> imx_v6_v7_defconfig 2 warnings
> mips: gcc version 6.3.0 (GCC)
> bcm47xx_defconfig 1 error
> ip27_defconfig 2 errors
> xway_defconfig 2 errors
> x86: gcc version 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04.1)
> allmodconfig 5 warnings
> allmodconfig+CONFIG_OF=n 5 warnings

A couple of extra problems here that Olof's build bot didn't find (I
replied on those
already, won't duplicate those). In total, we seem to be nine patches short of
a clean build now, which is the best we've had since kernelci added MIPS
builds (we had a clean build for one day before that).

> allmodconfig (arm) — PASS, 0 errors, 7 warnings, 0 section mismatches
>
> Warnings:
> drivers/iio/adc/rcar-gyroadc.c:429:27: warning: 'num_channels' may be used
> uninitialized in this function [-Wmaybe-uninitialized]
> drivers/iio/adc/rcar-gyroadc.c:426:22: warning: 'sample_width' may be used
> uninitialized in this function [-Wmaybe-uninitialized]
> drivers/iio/adc/rcar-gyroadc.c:428:23: warning: 'channels' may be used
> uninitialized in this function [-Wmaybe-uninitialized]
> drivers/iio/adc/rcar-gyroadc.c:398:26: warning: 'adcmode' may be used
> uninitialized in this function [-Wmaybe-uninitialized]
> drivers/media/platform/coda/imx-vdoa.c:333:181: warning: passing argument 1
> of '__platform_driver_register' discards 'const' qualifier from pointer
> target type [-Wdiscarded-qualifiers]
> drivers/media/platform/coda/imx-vdoa.c:333:625: warning: passing argument 1
> of 'platform_driver_unregister' discards 'const' qualifier from pointer
> target type [-Wdiscarded-qualifiers]

Covered in my reply to Olof's build bot.

> drivers/usb/gadget/udc/atmel_usba_udc.c:632:550: warning: 'ept_cfg' may be
> used uninitialized in this function [-Wmaybe-uninitialized]

My patch was acked, but not picked up by Felipe or Greg so far:

https://www.spinics.net/lists/linux-usb/msg153162.html

> allmodconfig (x86) — PASS, 0 errors, 5 warnings, 0 section mismatches
>
> Warnings:
> lib/raid6/recov_avx512.c:387:2: warning: #warning "your version of binutils
> lacks AVX512 support" [-Wcpp]

long-standing problem on the kernelci.org x86 toolchain, the only
solution is to update the build bot.

> drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c:7263:2: warning: missing braces around
> initializer [-Wmissing-braces]
> drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c:7263:2: warning: (near initialization
> for 'ce_payload.regular') [-Wmissing-braces]
> drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c:7290:2: warning: missing braces around
> initializer [-Wmissing-braces]
> drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c:7290:2: warning: (near initialization
> for 'de_payload.regular') [-Wmissing-braces]

This only happens on old compilers. I sent a patch, no reply so far:

https://patchwork.kernel.org/patch/9554695/

> bcm47xx_defconfig (mips) — FAIL, 1 error, 0 warnings, 0 section mismatches
>
> Errors:
> /home/buildslave/workspace/khilman-kbuilder/next/build-mips/../net/sched/sch_fq_codel.c:468:
> undefined reference to `tcf_destroy_chain'

I have not looked at this one yet, appears to be caused by commit
cf1facda2f61 ("sched: move tcf_proto_destroy and tcf_destroy_chain
helpers into cls_api")

> defconfig+CONFIG_KASAN=y (arm64) — PASS, 0 errors, 4 warnings, 0 section
> mismatches
>
> Warnings:
> net/bridge/br_netlink.c:1339:1: warning: the frame size of 2544 bytes is
> larger than 2048 bytes [-Wframe-larger-than=]
> net/wireless/nl80211.c:1415:1: warning: the frame size of 2208 bytes is
> larger than 2048 bytes [-Wframe-larger-than=]
> net/wireless/nl80211.c:1904:1: warning: the frame size of 3840 bytes is
> larger than 2048 bytes [-Wframe-larger-than=]
> net/wireless/nl80211.c:4443:1: warning: the frame size of 2240 bytes is
> larger than 2048 bytes [-Wframe-larger-than=]

I have an experimental patch, still working on a better solution. This might
take some more time, but it's been like this from the start with KASAN.

> ip27_defconfig (mips) — FAIL, 2 errors, 0 warnings, 0 section mismatches
>
> Errors:
> drivers/net/ethernet/qlogic/qlge/qlge_main.c:4819:1: error: insn does not
> satisfy its constraints:
> drivers/net/ethernet/qlogic/qlge/qlge_main.c:4819:1: internal compiler
> error: in extract_constrain_insn, at recog.c:2190

broken gcc release, apparently fixed in gcc-7 (can't reproduce here at least).
I suggested a workaround, but got no reply so far:

http://www.spinics.net/lists/mips/msg66465.html

> xway_defconfig (mips) — FAIL, 2 errors, 0 warnings, 0 section mismatches
>
> Errors:
> (.text+0x14e10): undefined reference to `physical_memsize'
> (.text+0x14e14): undefined reference to `physical_memsize'

Hauke already did a patch in December, but it has't made it into linux-mips
so far:

https://marc.info/?l=linux-mips&m=148612428414708&w=3

     Arnd




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