* Re: [next] x86: fs/hugetlbfs/inode.c:673:16: error: variable 'm_index' is uninitialized when used here [-Werror,-Wuninitialized]
[not found] <CA+G9fYsHVdu0toduQqk6vsR8Z8mOVzZ9-_p3O5fjQ5mOpSxsDA@mail.gmail.com>
@ 2022-08-25 16:10 ` Nathan Chancellor
0 siblings, 0 replies; only message in thread
From: Nathan Chancellor @ 2022-08-25 16:10 UTC (permalink / raw)
To: Naresh Kamboju
Cc: Mike Kravetz, linux-mm, Andrew Morton, open list, regressions,
clang-built-linux, Muchun Song, Andrea Arcangeli,
Aneesh Kumar K.V, Axel Rasmussen, David Hildenbrand,
Davidlohr Bueso, James Houghton, Kirill A. Shutemov, Miaohe Lin,
Michal Hocko, Mina Almasry, Naoya Horiguchi, Pasha Tatashin,
Peter Xu, Prakash Sangappa, llvm
Hi Naresh,
On Thu, Aug 25, 2022 at 04:13:30PM +0530, Naresh Kamboju wrote:
> The x86_64 and i386 clang builds failed due to these warnings / errors
> on Linux next-20220825.
>
> Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
>
> fs/hugetlbfs/inode.c:673:16: error: variable 'm_index' is
> uninitialized when used here [-Werror,-Wuninitialized]
> m_start, m_index, truncate_op);
> ^~~~~~~
> fs/hugetlbfs/inode.c:651:26: note: initialize the variable 'm_index'
> to silence this warning
> pgoff_t m_start, m_index;
> ^
> = 0
> 1 error generated.
Thank you for the report! Commit fcc0d3d00d74 ("hugetlb: handle truncate
racing with page faults") introduced this warning; the Intel folks
caught this as well:
https://lore.kernel.org/202208251012.g1mOhhxy-lkp@intel.com/
As an aside, can you please update your contact for our mailing list to
llvm@lists.linux.dev? We do not use the Google Groups list anymore.
Cheers,
Nathan
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