linux-kernel - [PATCH 5.8 254/255] dma-pool: Fix an uninitialized variable bug in atomic_pool

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20200901151012.940296455@linuxfoundation.org>
Date:   Tue,  1 Sep 2020 17:11:50 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Dan Carpenter <dan.carpenter@...cle.com>,
        Christoph Hellwig <hch@....de>
Subject: [PATCH 5.8 254/255] dma-pool: Fix an uninitialized variable bug in atomic_pool_expand()

From: Dan Carpenter <dan.carpenter@...cle.com>

commit 892fc9f6835ecf075efac20789b012c5c9997fcc upstream.

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@...cle.com>
Signed-off-by: Christoph Hellwig <hch@....de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 kernel/dma/pool.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/kernel/dma/pool.c
+++ b/kernel/dma/pool.c
@@ -84,7 +84,7 @@ static int atomic_pool_expand(struct gen
 			      gfp_t gfp)
 {
 	unsigned int order;
-	struct page *page;
+	struct page *page = NULL;
 	void *addr;
 	int ret = -ENOMEM;