* [sj:damon/next 10/106] mm/damon/core.c:2023:3: warning: variable 'sidx' is uninitialized when used here
@ 2025-07-05 9:17 kernel test robot
2025-07-05 17:23 ` SeongJae Park
0 siblings, 1 reply; 4+ messages in thread
From: kernel test robot @ 2025-07-05 9:17 UTC (permalink / raw)
To: SeongJae Park; +Cc: llvm, oe-kbuild-all
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-buildonly-randconfig-003-20250705 (https://download.01.org/0day-ci/archive/20250705/202507051740.hrB8EaUH-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/20250705/202507051740.hrB8EaUH-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/202507051740.hrB8EaUH-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.
vim +/sidx +2023 mm/damon/core.c
2013
2014 static void damos_trace_esz(struct damon_ctx *c, struct damos *s,
2015 struct damos_quota *quota)
2016 {
2017 unsigned int cidx = 0, sidx;
2018 struct damos *siter;
2019
2020 damon_for_each_scheme(siter, c) {
2021 if (siter == s)
2022 break;
> 2023 sidx++;
2024 }
2025 trace_damos_esz(cidx, sidx, quota->esz, true);
2026 }
2027
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 4+ messages in thread
* [sj:damon/next 10/106] mm/damon/core.c:2023:3: warning: variable 'sidx' is uninitialized when used here
@ 2025-07-05 13:07 kernel test robot
2025-07-05 17:21 ` SeongJae Park
0 siblings, 1 reply; 4+ messages in thread
From: kernel test robot @ 2025-07-05 13:07 UTC (permalink / raw)
To: SeongJae Park; +Cc: llvm, oe-kbuild-all
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.
vim +/sidx +2023 mm/damon/core.c
2013
2014 static void damos_trace_esz(struct damon_ctx *c, struct damos *s,
2015 struct damos_quota *quota)
2016 {
2017 unsigned int cidx = 0, sidx;
2018 struct damos *siter;
2019
2020 damon_for_each_scheme(siter, c) {
2021 if (siter == s)
2022 break;
> 2023 sidx++;
2024 }
2025 trace_damos_esz(cidx, sidx, quota->esz, true);
2026 }
2027
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [sj:damon/next 10/106] mm/damon/core.c:2023:3: warning: variable 'sidx' is uninitialized when used here
2025-07-05 13:07 kernel test robot
@ 2025-07-05 17:21 ` SeongJae Park
0 siblings, 0 replies; 4+ messages in thread
From: SeongJae Park @ 2025-07-05 17:21 UTC (permalink / raw)
To: kernel test robot; +Cc: SeongJae Park, llvm, oe-kbuild-all, damon
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
[...]
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [sj:damon/next 10/106] mm/damon/core.c:2023:3: warning: variable 'sidx' is uninitialized when used here
2025-07-05 9:17 [sj:damon/next 10/106] mm/damon/core.c:2023:3: warning: variable 'sidx' is uninitialized when used here kernel test robot
@ 2025-07-05 17:23 ` SeongJae Park
0 siblings, 0 replies; 4+ messages in thread
From: SeongJae Park @ 2025-07-05 17:23 UTC (permalink / raw)
To: kernel test robot; +Cc: SeongJae Park, llvm, oe-kbuild-all, damon
On Sat, 5 Jul 2025 17:17:03 +0800 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-buildonly-randconfig-003-20250705 (https://download.01.org/0day-ci/archive/20250705/202507051740.hrB8EaUH-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/20250705/202507051740.hrB8EaUH-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/202507051740.hrB8EaUH-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.
Seems this is a duplicate of another one[1]. Please refer to my reply to that
one[1].
[1] https://lore.kernel.org/202507051517.bs3jd8RW-lkp@intel.com
Thanks,
SJ
[...]
^ permalink raw reply [flat|nested] 4+ messages in thread
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2025-07-05 9:17 [sj:damon/next 10/106] mm/damon/core.c:2023:3: warning: variable 'sidx' is uninitialized when used here kernel test robot
2025-07-05 17:23 ` SeongJae Park
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2025-07-05 13:07 kernel test robot
2025-07-05 17:21 ` SeongJae Park
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