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 <[email protected]>
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
On Thu, 28 Mar 2024 19:05:51 +0530 Naresh Kamboju <[email protected]> wrote:
> 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 <[email protected]>
>
> 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;
> | ^
Thanks. Presumably ptent was intended, but this may not have had
adequate runtime testing. I'll drop the two-patch series "support
multi-size THP numa balancing".