linux-kernel - next: x86_64 defconfig with clang-17 failed

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Message-ID: <CA+G9fYvbFMMCmk91vzVXcS5T2Ezkwg8tQDgt_TfF-8Q=c0B0PQ@mail.gmail.com>
Date: Thu, 28 Mar 2024 19:05:51 +0530
From: Naresh Kamboju <naresh.kamboju@...aro.org>
To: open list <linux-kernel@...r.kernel.org>, linux-mm <linux-mm@...ck.org>, 
	Linux Regressions <regressions@...ts.linux.dev>, lkft-triage@...ts.linaro.org, 
	clang-built-linux <llvm@...ts.linux.dev>
Cc: Andrew Morton <akpm@...ux-foundation.org>, Nathan Chancellor <nathan@...nel.org>, 
	Nick Desaulniers <ndesaulniers@...gle.com>, Baolin Wang <baolin.wang@...ux.alibaba.com>, 
	willy@...radead.org, David Hildenbrand <david@...hat.com>
Subject: next: x86_64 defconfig with clang-17 failed

While building x86_64 defconfig with clang-17 the following build warnings /
errors noticed on Linux next-20240328 tag.

Reported-by: Linux Kernel Functional Testing <lkft@...aro.org>

Build error:
---------
mm/memory.c:5094:25: error: variable 'pte' is uninitialized when used
here [-Werror,-Wuninitialized]
 5094 |                         writable = pte_write(pte);
      |                                              ^~~
mm/memory.c:5083:3: note: variable 'pte' is declared here
 5083 |                 pte_t pte, old_pte;
      |                 ^
1 error generated.

steps to reproduce:
----------
# tuxmake --runtime podman --target-arch x86_64 --toolchain clang-17
--kconfig x86_64_defconfig LLVM=1 LLVM_IAS=1


Links:
 - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20240328/testrun/23230289/suite/build/test/clang-17-x86_64_defconfig/log
 - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20240328/testrun/23230289/suite/build/test/clang-17-x86_64_defconfig/details/
 - https://storage.tuxsuite.com/public/linaro/lkft/builds/2eIseG3mebbz7v0HESNW2YOTmiu/

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