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Groups > linux.kernel > #1640185
| From | Hanjun Guo <guohanjun@huawei.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v2 2/3] irqchip/mbigen: Fix potential NULL dereferencing |
| Date | 2017-05-12 06:10 +0200 |
| Message-ID | <tGa3T-7oh-7@gated-at.bofh.it> (permalink) |
| References | <tGa3T-7oh-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
From: Hanjun Guo <hanjun.guo@linaro.org>
platform_get_resource() may return NULL, add proper
check to avoid potential NULL dereferencing.
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
---
drivers/irqchip/irq-mbigen.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/irqchip/irq-mbigen.c b/drivers/irqchip/irq-mbigen.c
index 0f5e66e..2fa1e45 100644
--- a/drivers/irqchip/irq-mbigen.c
+++ b/drivers/irqchip/irq-mbigen.c
@@ -337,6 +337,9 @@ static int mbigen_device_probe(struct platform_device *pdev)
mgn_chip->pdev = pdev;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -EINVAL;
+
mgn_chip->base = devm_ioremap(&pdev->dev, res->start,
resource_size(res));
if (!mgn_chip->base) {
--
1.7.12.4
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[PATCH v2 0/3] irqchip/mbigen: bugfixs Hanjun Guo <guohanjun@huawei.com> - 2017-05-12 06:10 +0200
[PATCH v2 2/3] irqchip/mbigen: Fix potential NULL dereferencing Hanjun Guo <guohanjun@huawei.com> - 2017-05-12 06:10 +0200
[tip:irq/urgent] irqchip/mbigen: Fix potential NULL dereferencing tip-bot for Hanjun Guo <tipbot@zytor.com> - 2017-05-12 10:40 +0200
[PATCH v2 3/3] irqchip/mbigen: Fix the clear register offset Hanjun Guo <guohanjun@huawei.com> - 2017-05-12 06:10 +0200
[tip:irq/urgent] irqchip/mbigen: Fix the clear register offset calculation tip-bot for MaJun <tipbot@zytor.com> - 2017-05-12 10:40 +0200
[PATCH v2 1/3] irqchip/mbigen: Fix memory mapping code Hanjun Guo <guohanjun@huawei.com> - 2017-05-12 06:10 +0200
[tip:irq/urgent] irqchip/mbigen: Fix memory mapping code tip-bot for Hanjun Guo <tipbot@zytor.com> - 2017-05-12 10:40 +0200
Re: [PATCH v2 0/3] irqchip/mbigen: bugfixs "majun (Euler7)" <majun258@huawei.com> - 2017-05-12 09:00 +0200
Re: [PATCH v2 0/3] irqchip/mbigen: bugfixs Marc Zyngier <marc.zyngier@arm.com> - 2017-05-12 10:00 +0200
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