Re: [bug report] Merge branch 'akpm-current/current'

[Feng Tang <feng.tang@intel.com>]

Hi Dan,

On Wed, Aug 11, 2021 at 04:06:00PM +0800, Dan Carpenter wrote:
> [ I do a git show 2db9f815409f and it doesn't show that hugetlb.c was
>   modified but it the git log the merge commit is listed.  I don't
>   know git well enough to explain it.  But I think this was a merge
>   issue.  - dan ]
> 
> Hello Stephen Rothwell,
> 
> The patch 2db9f815409f: "Merge branch 'akpm-current/current'" from
> Aug 10, 2021, leads to the following
> Smatch static checker warning:
> 
> 	mm/hugetlb.c:2172 alloc_buddy_huge_page_with_mpol()
> 	error: uninitialized symbol 'page'.
> 
> mm/hugetlb.c
>     2151 static
>     2152 struct page *alloc_buddy_huge_page_with_mpol(struct hstate *h,
>     2153 		struct vm_area_struct *vma, unsigned long addr)
>     2154 {
>     2155 	struct page *page;
> 
> This should be "struct page *page = NULL;"

Thanks for the report! This was also reported by Nathan Chancellor,
who gave a quick fix: https://lore.kernel.org/lkml/20210810200632.3812797-1-nathan@kernel.org/
and Andrew has taken it to the -mm tree.

Sorry for the inconvenience.

- Feng