From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Yang Yingliang <yangyingliang@huawei.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Sasha Levin <sashal@kernel.org>,
hminas@synopsys.com, linux-usb@vger.kernel.org
Subject: [PATCH AUTOSEL 4.14 7/8] usb: dwc2: check return value after calling platform_get_resource()
Date: Tue, 28 Sep 2021 01:57:25 -0400 [thread overview]
Message-ID: <20210928055727.173078-7-sashal@kernel.org> (raw)
In-Reply-To: <20210928055727.173078-1-sashal@kernel.org>
From: Yang Yingliang <yangyingliang@huawei.com>
[ Upstream commit 856e6e8e0f9300befa87dde09edb578555c99a82 ]
It will cause null-ptr-deref if platform_get_resource() returns NULL,
we need check the return value.
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20210831084236.1359677-1-yangyingliang@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/usb/dwc2/hcd.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c
index ef7f3b013fcb..ba7528916da4 100644
--- a/drivers/usb/dwc2/hcd.c
+++ b/drivers/usb/dwc2/hcd.c
@@ -5229,6 +5229,10 @@ int dwc2_hcd_init(struct dwc2_hsotg *hsotg)
hcd->has_tt = 1;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ retval = -EINVAL;
+ goto error1;
+ }
hcd->rsrc_start = res->start;
hcd->rsrc_len = resource_size(res);
--
2.33.0
parent reply other threads:[~2021-09-28 6:02 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <20210928055727.173078-1-sashal@kernel.org>]
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