+ mm-mmapc-__vma_adjust-suppress-unintialized-var-warning.patch added to mm-hotfixes-unstable branch

+ mm-mmapc-__vma_adjust-suppress-unintialized-var-warning.patch added to mm-hotfixes-unstable branch

[Andrew Morton]

The patch titled
     Subject: mm/mmap.c: __vma_adjust(): suppress uninitialized var warning
has been added to the -mm mm-hotfixes-unstable branch.  Its filename is
     mm-mmapc-__vma_adjust-suppress-unintialized-var-warning.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-mmapc-__vma_adjust-suppress-unintialized-var-warning.patch

This patch will later appear in the mm-hotfixes-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Andrew Morton <akpm@linux-foundation.org>
Subject: mm/mmap.c: __vma_adjust(): suppress uninitialized var warning
Date: Tue Oct 18 01:57:37 PM PDT 2022

The code is OK, but it fools gcc.

mm/mmap.c:802 __vma_adjust() error: uninitialized symbol 'next_next'.

Fixes: 524e00b36e8c5 ("mm: remove rb tree.")
Reported-by: kernel test robot <lkp@intel.com>
Cc: Liam R. Howlett <Liam.Howlett@Oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/mmap.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/mm/mmap.c~mm-mmapc-__vma_adjust-suppress-unintialized-var-warning
+++ a/mm/mmap.c
@@ -618,7 +618,8 @@ int __vma_adjust(struct vm_area_struct *
 	struct vm_area_struct *expand)
 {
 	struct mm_struct *mm = vma->vm_mm;
-	struct vm_area_struct *next_next, *next = find_vma(mm, vma->vm_end);
+	struct vm_area_struct *next_next = NULL;	/* uninit var warning */
+	struct vm_area_struct *next = find_vma(mm, vma->vm_end);
 	struct vm_area_struct *orig_vma = vma;
 	struct address_space *mapping = NULL;
 	struct rb_root_cached *root = NULL;
_

Patches currently in -mm which might be from akpm@linux-foundation.org are

mm-mmapc-__vma_adjust-suppress-unintialized-var-warning.patch
mm-hugetlb-convert-free_huge_page-to-folios-fix.patch
powerpc-ptrace-user_regset_copyin_ignore-always-returns-0-fix.patch
minmax-sanity-check-constant-bounds-when-clamping-checkpatch-fixes.patch
minmax-sanity-check-constant-bounds-when-clamping-checkpatch-fixes-fix.patch