The patch titled
Subject: mm: pagewalk: add back missing variable initializations
has been added to the -mm mm-unstable branch. Its filename is
mm-pagewalk-make-error-checks-more-obvious-fix.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-pagewalk-make-error-checks-more-obvious-fix.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Rolf Eike Beer <eb@xxxxxxxxx>
Subject: mm: pagewalk: add back missing variable initializations
Date: Wed, 24 Aug 2022 13:00:11 +0200
These initializations accidentially got lost during refactoring.
The first one can't actually be used without initialization, because
walk_p4d_range() is only called when one of the 4 callbacks is set, but relying
on this seems fragile.
Link: https://lkml.kernel.org/r/2123960.ggj6I0NvhH@xxxxxxxxxxxxxxxxxxxxxx
Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx>
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Rolf Eike Beer <eb@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/pagewalk.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/pagewalk.c~mm-pagewalk-make-error-checks-more-obvious-fix
+++ a/mm/pagewalk.c
@@ -225,7 +225,7 @@ static int walk_p4d_range(pgd_t *pgd, un
p4d = p4d_offset(pgd, addr);
do {
- int err;
+ int err = 0;
next = p4d_addr_end(addr, end);
if (p4d_none_or_clear_bad(p4d)) {
_
Patches currently in -mm which might be from eb@xxxxxxxxx are
mm-pagewalk-make-error-checks-more-obvious.patch
mm-pagewalk-make-error-checks-more-obvious-fix.patch
mm-pagewalk-make-error-checks-more-obvious-fix-2.patch
mm-pagewalk-dont-check-vma-in-walk_page_range_novma.patch
mm-pagewalk-fix-documentation-of-pte-hole-handling.patch
mm-pagewalk-add-api-documentation-for-walk_page_range_novma.patch
mm-pagewalk-allow-walk_page_range_novma-without-mm.patch
mm-pagewalk-move-variables-to-more-local-scope-tweak-loops.patch
mm-pagewalk-move-variables-to-more-local-scope-tweak-loops-fix.patch
mm-pagewalk-add-back-missing-variable-initializations.patch
