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Subject[PATCH] mm/hmm: fix uninitialized use of 'entry' in hmm_vma_walk_pmd()
Date
From: Ralph Campbell <rcampbell@nvidia.com>

The variable 'entry' is used before being initialized in
hmm_vma_walk_pmd()

Signed-off-by: Ralph Campbell <rcampbell@nvidia.com>
Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
---
mm/hmm.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/mm/hmm.c b/mm/hmm.c
index ea19742a5d60..979211c7ccc8 100644
--- a/mm/hmm.c
+++ b/mm/hmm.c
@@ -418,7 +418,7 @@ static int hmm_vma_walk_pmd(pmd_t *pmdp,
}

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 @@ static int hmm_vma_walk_pmd(pmd_t *pmdp,
continue;
}

- entry = pte_to_swp_entry(pte);
-
/*
* This is a special swap entry, ignore migration, use
* device and report anything else as error.
--
2.14.3
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