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Message-ID: <Y2zysjBdAERPdUOQ@dev-arch.thelio-3990X>
Date: Thu, 10 Nov 2022 05:46:42 -0700
From: Nathan Chancellor <nathan@...nel.org>
To: Naresh Kamboju <naresh.kamboju@...aro.org>
Cc: open list <linux-kernel@...r.kernel.org>,
Linux-Next Mailing List <linux-next@...r.kernel.org>,
lkft-triage@...ts.linaro.org, llvm@...ts.linux.dev,
"Rafael J. Wysocki" <rafael@...nel.org>,
Viresh Kumar <viresh.kumar@...aro.org>,
Arnd Bergmann <arnd@...db.de>,
Linux PM <linux-pm@...r.kernel.org>
Subject: Re: x86: clang: acpi-cpufreq.c:970:24: error: variable 'ret' is
uninitialized when used here [-Werror,-Wuninitialized]
Hi Naresh,
On Thu, Nov 10, 2022 at 04:44:09PM +0530, Naresh Kamboju wrote:
> [Please ignore email this if it is already reported]
>
> Kernel build warning noticed on x86_64 with clang toolchain [1].
> Build failures noticed from next-20221108 .. next-20221110.
>
> Reported-by: Linux Kernel Functional Testing <lkft@...aro.org>
>
> make --silent --keep-going --jobs=8
> O=/home/tuxbuild/.cache/tuxmake/builds/1/build LLVM=1 LLVM_IAS=1
> ARCH=x86_64 SRCARCH=x86 CROSS_COMPILE=x86_64-linux-gnu- HOSTCC=clang
> CC=clang
> drivers/cpufreq/acpi-cpufreq.c:970:24: error: variable 'ret' is
> uninitialized when used here [-Werror,-Wuninitialized]
> acpi_cpufreq_online = ret;
> ^~~
> drivers/cpufreq/acpi-cpufreq.c:960:9: note: initialize the variable
> 'ret' to silence this warning
> int ret;
> ^
> = 0
> 1 error generated.
Thanks for the report. I noticed this when it came down in next-20221108
and sent a patch for it:
https://lore.kernel.org/20221108170103.3375832-1-nathan@kernel.org/
https://github.com/ClangBuiltLinux/linux/issues/1757
It just needs to be reviewed and picked up.
Cheers,
Nathan
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