From: Zhen Ni <nizhen@uniontech.com>
To: ok@artecdesign.ee, gregkh@linuxfoundation.org
Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
Zhen Ni <nizhen@uniontech.com>
Subject: [PATCH] USB: host: isp116x: check return value after calling platform_get_resource()
Date: Wed, 2 Mar 2022 11:37:16 +0800 [thread overview]
Message-ID: <20220302033716.31272-1-nizhen@uniontech.com> (raw)
It will cause null-ptr-deref if platform_get_resource() returns NULL,
we need check the return value.
Signed-off-by: Zhen Ni <nizhen@uniontech.com>
---
drivers/usb/host/isp116x-hcd.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/host/isp116x-hcd.c b/drivers/usb/host/isp116x-hcd.c
index 8835f6bd528e..8c7f0991c21b 100644
--- a/drivers/usb/host/isp116x-hcd.c
+++ b/drivers/usb/host/isp116x-hcd.c
@@ -1541,10 +1541,12 @@ static int isp116x_remove(struct platform_device *pdev)
iounmap(isp116x->data_reg);
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
- release_mem_region(res->start, 2);
+ if (res)
+ release_mem_region(res->start, 2);
iounmap(isp116x->addr_reg);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- release_mem_region(res->start, 2);
+ if (res)
+ release_mem_region(res->start, 2);
usb_put_hcd(hcd);
return 0;
--
2.20.1
next reply other threads:[~2022-03-02 3:37 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-02 3:37 Zhen Ni [this message]
2022-06-05 13:31 ` Geert Uytterhoeven
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