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Message-Id: <1400428881-10310-1-git-send-email-rickard_strandqvist@spectrumdigital.se>
Date: Sun, 18 May 2014 18:01:21 +0200
From: Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
To: Thadeu Lima de Souza Cascardo <cascardo@...ux.vnet.ibm.com>,
netdev@...r.kernel.org
Cc: Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>,
linux-kernel@...r.kernel.org
Subject: [PATCH] net: ethernet: ibm: ehea: ehea_qmr.c: Fix for possible null pointer dereference
There is otherwise a risk of a possible null pointer dereference.
Was largely found by using a static code analysis program called cppcheck.
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
---
drivers/net/ethernet/ibm/ehea/ehea_qmr.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/ibm/ehea/ehea_qmr.c b/drivers/net/ethernet/ibm/ehea/ehea_qmr.c
index 9b03033..a0820f7 100644
--- a/drivers/net/ethernet/ibm/ehea/ehea_qmr.c
+++ b/drivers/net/ethernet/ibm/ehea/ehea_qmr.c
@@ -103,12 +103,14 @@ out_nomem:
static void hw_queue_dtor(struct hw_queue *queue)
{
- int pages_per_kpage = PAGE_SIZE / queue->pagesize;
+ int pages_per_kpage;
int i, nr_pages;
if (!queue || !queue->queue_pages)
return;
+ pages_per_kpage = PAGE_SIZE / queue->pagesize;
+
nr_pages = queue->queue_length / queue->pagesize;
for (i = 0; i < nr_pages; i += pages_per_kpage)
--
1.7.10.4
--
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