1 files changed, 44 insertions, 0 deletions
diff --git a/freed-ora/tags/f27/4.15.9-300.fc27.gnu/0001-net-phy-mdio-bcm-unimac-fix-potential-NULL-dereferen.patch b/freed-ora/tags/f27/4.15.9-300.fc27.gnu/0001-net-phy-mdio-bcm-unimac-fix-potential-NULL-dereferen.patch
new file mode 100644
index 000000000..061ef5819
--- /dev/null
+++ b/freed-ora/tags/f27/4.15.9-300.fc27.gnu/0001-net-phy-mdio-bcm-unimac-fix-potential-NULL-dereferen.patch
@@ -0,0 +1,44 @@
+From 297a6961ffb8ff4dc66c9fbf53b924bd1dda05d5 Mon Sep 17 00:00:00 2001
+From: Wei Yongjun <weiyongjun1@huawei.com>
+Date: Thu, 11 Jan 2018 11:21:51 +0000
+Subject: [PATCH] net: phy: mdio-bcm-unimac: fix potential NULL dereference in
+ unimac_mdio_probe()
+
+platform_get_resource() may fail and return NULL, so we should
+better check it's return value to avoid a NULL pointer dereference
+a bit later in the code.
+
+This is detected by Coccinelle semantic patch.
+
+@@
+expression pdev, res, n, t, e, e1, e2;
+@@
+
+res = platform_get_resource(pdev, t, n);
++ if (!res)
++   return -EINVAL;
+... when != res == NULL
+e = devm_ioremap(e1, res->start, e2);
+
+Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/phy/mdio-bcm-unimac.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/drivers/net/phy/mdio-bcm-unimac.c b/drivers/net/phy/mdio-bcm-unimac.c
+index 08e0647b85e2..8d370667fa1b 100644
+--- a/drivers/net/phy/mdio-bcm-unimac.c
++++ b/drivers/net/phy/mdio-bcm-unimac.c
+@@ -205,6 +205,8 @@ static int unimac_mdio_probe(struct platform_device *pdev)
+ 		return -ENOMEM;
+
+ 	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	if (!r)
++		return -EINVAL;
+
+ 	/* Just ioremap, as this MDIO block is usually integrated into an
+ 	 * Ethernet MAC controller register range
+-- 
+2.14.3
+