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Message-ID: <20240830164706.GW1368797@kernel.org>
Date: Fri, 30 Aug 2024 17:47:06 +0100
From: Simon Horman <horms@...nel.org>
To: Naresh Kamboju <naresh.kamboju@...aro.org>
Cc: clang-built-linux <llvm@...ts.linux.dev>,
Netdev <netdev@...r.kernel.org>,
open list <linux-kernel@...r.kernel.org>,
lkft-triage@...ts.linaro.org,
Linux Regressions <regressions@...ts.linux.dev>,
Anders Roxell <anders.roxell@...aro.org>,
Dan Carpenter <dan.carpenter@...aro.org>,
Arnd Bergmann <arnd@...db.de>,
Nathan Chancellor <nathan@...nel.org>,
Nick Desaulniers <ndesaulniers@...gle.com>,
Florian Westphal <fw@...len.de>,
Steffen Klassert <steffen.klassert@...unet.com>
Subject: Re: net/xfrm/xfrm_policy.c:1286:8: error: variable 'dir' is
uninitialized when used here [-Werror,-Wuninitialized]
+ Florian, Steffen
On Fri, Aug 30, 2024 at 12:15:10PM +0530, Naresh Kamboju wrote:
> The x86_64 defconfig builds failed on today's Linux next-20240829
> due to following build warnings / errors.
>
> Regressions:
> * i386, build
> - clang-18-defconfig
> - clang-nightly-defconfig
>
> * x86_64, build
> - clang-18-lkftconfig
> - clang-18-lkftconfig-compat
> - clang-18-lkftconfig-kcsan
> - clang-18-lkftconfig-no-kselftest-frag
> - clang-18-x86_64_defconfig
> - clang-nightly-lkftconfig
> - clang-nightly-lkftconfig-kselftest
> - clang-nightly-x86_64_defconfig
> - rustclang-nightly-lkftconfig-kselftest
>
> first seen on next-20240829.
> Good: next-20240828
> BAD: next-20240829
>
> Reported-by: Linux Kernel Functional Testing <lkft@...aro.org>
>
> build log:
> --------
> net/xfrm/xfrm_policy.c:1286:8: error: variable 'dir' is uninitialized
> when used here [-Werror,-Wuninitialized]
> 1286 | if ((dir & XFRM_POLICY_MASK) == XFRM_POLICY_OUT) {
> | ^~~
> net/xfrm/xfrm_policy.c:1257:9: note: initialize the variable 'dir' to
> silence this warning
> 1257 | int dir;
> | ^
> | = 0
> 1 error generated.
I believe that is due to
commit 08c2182cf0b4 ("xfrm: policy: use recently added helper in more places")
I will work on a fix to initialise dir in the loop where it is used.
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