The patch titled
Subject: lib/radix-tree.c: fix uninitialized variable compilation warning
has been added to the -mm mm-nonmm-unstable branch. Its filename is
radix-tree-test-suite-fix-uninitialized-variable-compilation-warning.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/radix-tree-test-suite-fix-uninitialized-variable-compilation-warning.patch
This patch will later appear in the mm-nonmm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Rong Tao <rongtao@xxxxxxxx>
Subject: lib/radix-tree.c: fix uninitialized variable compilation warning
Date: Wed, 9 Nov 2022 22:34:25 +0800
We need to set an initial value for offset to eliminate compilation
warning.
How to reproduce warning:
$ make -C tools/testing/radix-tree
radix-tree.c: In function `radix_tree_tag_clear':
radix-tree.c:1046:17: warning: `offset' may be used uninitialized in this function [-Wmaybe-uninitialized]
1046 | node_tag_clear(root, parent, tag, offset);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Link: https://lkml.kernel.org/r/tencent_DF74099967595DCEA93CBDC28D062026180A@xxxxxx
Signed-off-by: Rong Tao <rongtao@xxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/radix-tree.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/lib/radix-tree.c~radix-tree-test-suite-fix-uninitialized-variable-compilation-warning
+++ a/lib/radix-tree.c
@@ -1029,7 +1029,7 @@ void *radix_tree_tag_clear(struct radix_
{
struct radix_tree_node *node, *parent;
unsigned long maxindex;
- int offset;
+ int offset = 0;
radix_tree_load_root(root, &node, &maxindex);
if (index > maxindex)
_
Patches currently in -mm which might be from rongtao@xxxxxxxx are
tools-vm-page_owner-ignore-page_owner_sort-binary.patch
radix-tree-test-suite-fix-uninitialized-variable-compilation-warning.patch
