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Subject[PATCH] Fix potentially derefencing uninitialized 'r'.
Date
struct memblock_region 'r' will not be initialized potentially
because of while statement's condition in __next_mem_pfn_range()function.
Initialize struct memblock_region data structure by default.

Signed-off-by: Geunsik Lim <geunsik.lim@samsung.com>
---
mm/memblock.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/mm/memblock.c b/mm/memblock.c
index 77b5f22..867f5a2 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -671,7 +671,7 @@ void __init_memblock __next_mem_pfn_range(int *idx, int nid,
unsigned long *out_end_pfn, int *out_nid)
{
struct memblock_type *type = &memblock.memory;
- struct memblock_region *r;
+ struct memblock_region *r = &type->regions[*idx];

while (++*idx < type->cnt) {
r = &type->regions[*idx];
--
1.7.8.1


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