The patch titled
Subject: mm/hmm: fix uninitialized use of 'entry' in hmm_vma_walk_pmd()
has been added to the -mm tree. Its filename is
mm-hmm-fix-uninitialized-use-of-entry-in-hmm_vma_walk_pmd.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-hmm-fix-uninitialized-use-of-entry-in-hmm_vma_walk_pmd.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-hmm-fix-uninitialized-use-of-entry-in-hmm_vma_walk_pmd.patch
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------------------------------------------------------
From: Ralph Campbell <rcampbell@xxxxxxxxxx>
Subject: mm/hmm: fix uninitialized use of 'entry' in hmm_vma_walk_pmd()
The variable 'entry' is used before being initialized in
hmm_vma_walk_pmd().
Link: http://lkml.kernel.org/r/20180122185759.26286-1-jglisse@xxxxxxxxxx
Signed-off-by: Ralph Campbell <rcampbell@xxxxxxxxxx>
Signed-off-by: Jérôme Glisse <jglisse@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/hmm.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff -puN mm/hmm.c~mm-hmm-fix-uninitialized-use-of-entry-in-hmm_vma_walk_pmd mm/hmm.c
--- a/mm/hmm.c~mm-hmm-fix-uninitialized-use-of-entry-in-hmm_vma_walk_pmd
+++ a/mm/hmm.c
@@ -418,7 +418,7 @@ again:
}
if (!pte_present(pte)) {
- swp_entry_t entry;
+ swp_entry_t entry = pte_to_swp_entry(pte);
if (!non_swap_entry(entry)) {
if (hmm_vma_walk->fault)
@@ -426,8 +426,6 @@ again:
continue;
}
- entry = pte_to_swp_entry(pte);
-
/*
* This is a special swap entry, ignore migration, use
* device and report anything else as error.
_
Patches currently in -mm which might be from rcampbell@xxxxxxxxxx are
mm-hmm-fix-uninitialized-use-of-entry-in-hmm_vma_walk_pmd.patch
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