From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Wed, 26 Aug 2020 11:33:30 +0000 (+0300)
Subject: dma-pool: Fix an uninitialized variable bug in atomic_pool_expand()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=892fc9f6835ecf075efac20789b012c5c9997fcc;p=linux.git

dma-pool: Fix an uninitialized variable bug in atomic_pool_expand()

The "page" pointer can be used with out being initialized.

Fixes: d7e673ec2c8e ("dma-pool: Only allocate from CMA when in same memory zone")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
---

diff --git a/kernel/dma/pool.c b/kernel/dma/pool.c
index 06582b488e317..1281c0f0442bc 100644
--- a/kernel/dma/pool.c
+++ b/kernel/dma/pool.c
@@ -84,7 +84,7 @@ static int atomic_pool_expand(struct gen_pool *pool, size_t pool_size,
 			      gfp_t gfp)
 {
 	unsigned int order;
-	struct page *page;
+	struct page *page = NULL;
 	void *addr;
 	int ret = -ENOMEM;