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From: SeongJae Park <sj@kernel.org>
To: kernel test robot <lkp@intel.com>
Cc: SeongJae Park <sj@kernel.org>,
	llvm@lists.linux.dev,
	oe-kbuild-all@lists.linux.dev,
	damon@lists.linux.dev
Subject: Re: [sj:damon/next 10/106] mm/damon/core.c:2023:3: warning: variable 'sidx' is uninitialized when used here
Date: Sat,  5 Jul 2025 10:21:10 -0700
Message-Id: <20250705172110.52351-1-sj@kernel.org>
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In-Reply-To: <202507051517.bs3jd8RW-lkp@intel.com>
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On Sat, 5 Jul 2025 15:07:36 +0200 kernel test robot <lkp@intel.com> wrote:

> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/sj/linux.git damon/next
> head:   9af2f87d23cb0b15f32e59e4e9da681454a46eab
> commit: 405b04c2042a3448c2986c909608037f05a3bf0c [10/106] mm/damon: add trace event for effective size quota
> config: x86_64-rhel-9.4-rust (https://download.01.org/0day-ci/archive/20250705/202507051517.bs3jd8RW-lkp@intel.com/config)
> compiler: clang version 20.1.7 (https://github.com/llvm/llvm-project 6146a88f60492b520a36f8f8f3231e15f3cc6082)
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250705/202507051517.bs3jd8RW-lkp@intel.com/reproduce)
> 
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <lkp@intel.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202507051517.bs3jd8RW-lkp@intel.com/
> 
> All warnings (new ones prefixed by >>):
> 
> >> mm/damon/core.c:2023:3: warning: variable 'sidx' is uninitialized when used here [-Wuninitialized]
>     2023 |                 sidx++;
>          |                 ^~~~
>    mm/damon/core.c:2017:29: note: initialize the variable 'sidx' to silence this warning
>     2017 |         unsigned int cidx = 0, sidx;
>          |                                    ^
>          |                                     = 0
>    1 warning generated.

Thank you for this report!  I just posted a fix:
https://lore.kernel.org/20250705172003.52324-1-sj@kernel.org


Thanks,
SJ

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