netdev - [2.6 patch] net/phy/fixed.c: fix a use-after-free

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Date:	Sat, 2 Feb 2008 23:15:02 +0200
From:	Adrian Bunk <bunk@...nel.org>
To:	Anton Vorontsov <avorontsov@...mvista.com>,
	Vitaly Bordug <vitb@...nel.crashing.org>,
	Jeff Garzik <jeff@...zik.org>
Cc:	netdev@...r.kernel.org
Subject: [2.6 patch] net/phy/fixed.c: fix a use-after-free

This patch fixes a use-after-free introduced by
commit a79d8e93d300adb84cccc38ac396cfb118c238ad and spotted by the 
Coverity checker.

Signed-off-by: Adrian Bunk <bunk@...nel.org>

---
20c51455b2faed63c3026fd4d7139e5a6a917d31 
diff --git a/drivers/net/phy/fixed.c b/drivers/net/phy/fixed.c
index 73b6d39..ca9b040 100644
--- a/drivers/net/phy/fixed.c
+++ b/drivers/net/phy/fixed.c
@@ -236,12 +236,12 @@ module_init(fixed_mdio_bus_init);
 static void __exit fixed_mdio_bus_exit(void)
 {
 	struct fixed_mdio_bus *fmb = &platform_fmb;
-	struct fixed_phy *fp;
+	struct fixed_phy *fp, *tmp;
 
 	mdiobus_unregister(&fmb->mii_bus);
 	platform_device_unregister(pdev);
 
-	list_for_each_entry(fp, &fmb->phys, node) {
+	list_for_each_entry_safe(fp, tmp, &fmb->phys, node) {
 		list_del(&fp->node);
 		kfree(fp);
 	}

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