linux-kernel - next-20230124: x86: clang builds failed

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Message-ID: <CA+G9fYs+4eAn52jW8vPd5dv2e4fj3rQGrDnp6YUrmsF_ThJiqA@mail.gmail.com>
Date:   Tue, 24 Jan 2023 13:33:47 +0530
From:   Naresh Kamboju <naresh.kamboju@...aro.org>
To:     open list <linux-kernel@...r.kernel.org>, llvm@...ts.linux.dev,
        lkft-triage@...ts.linaro.org
Cc:     Jens Axboe <axboe@...nel.dk>,
        Pavel Begunkov <asml.silence@...il.com>,
        Nathan Chancellor <nathan@...nel.org>
Subject: next-20230124: x86: clang builds failed

Results from Linaro’s test farm.
Regressions on x86_64, and i386.

Regressions found on x86_64:

    - build/clang-15-lkftconfig-kcsan
    - build/clang-15-lkftconfig
    - build/clang-nightly-x86_64_defconfig
    - build/clang-15-x86_64_defconfig
    - build/clang-nightly-lkftconfig
    - build/clang-15-lkftconfig-compat
    - build/clang-lkftconfig

Regressions found on i386:

    - build/clang-15-defconfig
    - build/clang-15-lkftconfig
    - build/clang-nightly-defconfig
    - build/clang-nightly-lkftconfig
    - build/clang-lkftconfig


Build warnings and errors:
---------------------------
make --silent --keep-going --jobs=8
O=/home/tuxbuild/.cache/tuxmake/builds/1/build ARCH=x86_64 SRCARCH=x86
CROSS_COMPILE=x86_64-linux-gnu- 'HOSTCC=sccache clang' 'CC=sccache
clang' LLVM=1 LLVM_IAS=1
io_uring/io_uring.c:1240:3: error: variable 'count' is uninitialized
when used here [-Werror,-Wuninitialized]
                count += handle_tw_list(node, &ctx, &uring_locked, &fake);
                ^~~~~
io_uring/io_uring.c:1230:20: note: initialize the variable 'count' to
silence this warning
        unsigned int count;
                          ^
                           = 0
1 error generated.
make[3]: *** [scripts/Makefile.build:252: io_uring/io_uring.o] Error 1

Build log links,
https://storage.tuxsuite.com/public/linaro/lkft/builds/2Kl1NaLatrfZ40PLJVY0iCMUhz2/

steps to reproduce:
# To install tuxmake on your system globally:
# sudo pip3 install -U tuxmake
#
# See https://docs.tuxmake.org/ for complete documentation.
# Original tuxmake command with fragments listed below.
# tuxmake --runtime podman --target-arch x86_64 --toolchain clang-15
--kconfig defconfig --kconfig-add
https://raw.githubusercontent.com/Linaro/meta-lkft/kirkstone/meta/recipes-kernel/linux/files/lkft.config
--kconfig-add https://raw.githubusercontent.com/Linaro/meta-lkft/kirkstone/meta/recipes-kernel/linux/files/lkft-crypto.config
--kconfig-add https://raw.githubusercontent.com/Linaro/meta-lkft/kirkstone/meta/recipes-kernel/linux/files/distro-overrides.config
--kconfig-add https://raw.githubusercontent.com/Linaro/meta-lkft/kirkstone/meta/recipes-kernel/linux/files/systemd.config
--kconfig-add https://raw.githubusercontent.com/Linaro/meta-lkft/kirkstone/meta/recipes-kernel/linux/files/virtio.config
--kconfig-add CONFIG_IGB=y --kconfig-add
CONFIG_UNWINDER_FRAME_POINTER=y LLVM=1 LLVM_IAS=1

--
Linaro LKFT
https://lkft.linaro.org