mm: huge_memory.c:2736:31: error: variable 'page' is uninitialized when used here [-Werror,-Wuninitialized]
The x86_64 clang builds failed on Linux next due to these warnings / errors.
Reported-by: Linux Kernel Functional Testing lkft@linaro.org
Build error: ------ mm/huge_memory.c:2736:31: error: variable 'page' is uninitialized when used here [-Werror,-Wuninitialized] 2736 | folio_remove_rmap_pmd(folio, page, vma); | ^~~~ /builds/linux/mm/huge_memory.c:2700:19: note: initialize the variable 'page' to silence this warning 2700 | struct page *page; | ^ | = NULL 1 error generated.
patch that is causing this build failures, mm/vmscan: avoid split lazyfree THP during shrink_folio_list()
metadata:
-- git_describe: next-20240625 git_repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next git_short_log: 0fc4bfab2cd4 ("Add linux-next specific files for 20240625") arch: x86_64 toolchain: clang-18
Links: - https://storage.tuxsuite.com/public/linaro/lkft/builds/2iNfPlsMdxsqZTOC14r1x... - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20240625/tes...
-- Linaro LKFT https://lkft.linaro.org
Hi Naresh,
On Wed, Jun 26, 2024 at 10:14:56PM +0530, Naresh Kamboju wrote:
The x86_64 clang builds failed on Linux next due to these warnings / errors.
Reported-by: Linux Kernel Functional Testing lkft@linaro.org
Build error:
mm/huge_memory.c:2736:31: error: variable 'page' is uninitialized when used here [-Werror,-Wuninitialized] 2736 | folio_remove_rmap_pmd(folio, page, vma); | ^~~~ /builds/linux/mm/huge_memory.c:2700:19: note: initialize the variable 'page' to silence this warning 2700 | struct page *page; | ^ | = NULL 1 error generated.
patch that is causing this build failures, mm/vmscan: avoid split lazyfree THP during shrink_folio_list()
Thanks for the report. It looks like Andrew addressed this in mm-unstable based on an earlier report (although that change might need some more polish ;)
https://lore.kernel.org/202406260514.SLhNM9kQ-lkp@intel.com/
https://git.kernel.org/akpm/mm/c/199e6c3bd568657e85ead22d6f41c46e74ad9a75
Cheers, Nathan
-
Naresh Kamboju -
Nathan Chancellor