The patch titled
Subject: mm/huge_memory.c: fix used-uninitialized
has been added to the -mm mm-unstable branch. Its filename is
mm-huge_memoryc-fix-used-uninitialized.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-huge_memoryc-fix-used-uninitialized.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: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: mm/huge_memory.c: fix used-uninitialized
Date: Tue Jun 25 02:51:36 PM PDT 2024
Fix used-uninitialized of `page'.
Fixes: dce7d10be4bb ("mm/madvise: optimize lazyfreeing with mTHP in madvise_free")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202406260514.SLhNM9kQ-lkp@xxxxxxxxx
Cc: Lance Yang <ioworker0@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/huge_memory.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/mm/huge_memory.c~mm-huge_memoryc-fix-used-uninitialized
+++ a/mm/huge_memory.c
@@ -2696,7 +2696,6 @@ static bool __discard_anon_folio_pmd_loc
struct mm_struct *mm = vma->vm_mm;
int ref_count, map_count;
pmd_t orig_pmd = *pmdp;
- struct page *page;
if (folio_test_dirty(folio) || pmd_dirty(orig_pmd))
return false;
@@ -2732,7 +2731,7 @@ static bool __discard_anon_folio_pmd_loc
return false;
}
- folio_remove_rmap_pmd(folio, page, vma);
+ folio_remove_rmap_pmd(folio, pmd_page(orig_pmd), vma);
zap_deposited_table(mm, pmdp);
add_mm_counter(mm, MM_ANONPAGES, -HPAGE_PMD_NR);
if (vma->vm_flags & VM_LOCKED)
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
mm-huge_memoryc-fix-used-uninitialized.patch
mm-allow-reuse-of-the-lower-16-bit-of-the-page-type-with-an-actual-type-fix.patch
mm-extend-rmap-flags-arguments-for-folio_add_new_anon_rmap-fix.patch
mm-use-folio_add_new_anon_rmap-if-folio_test_anonfolio==false-fix.patch
tools-mm-introduce-a-tool-to-assess-swap-entry-allocation-for-thp_swapout-fix.patch
mm-memory-failure-refactor-log-format-in-soft-offline-code-fix.patch
