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DateFri, 22 Feb 2008 16:31:40 -0800
FromGreg KH <>
Subject[patch 37/38] bonding: fix NULL pointer deref in startup processing
2.6.24-stable review patch.  If anyone has any objections, please let us
know.

------------------
From: Jay Vosburgh <fubar@us.ibm.com>
patch 4fe4763cd8cacd81d892193efb48b99c99c15323 in mainline.

	Fix the "are we creating a duplicate" check to not compare
the name if the name is NULL (meaning that the system should select
a name).  Bug reported by Benny Amorsen <benny+usenet@amorsen.dk>.

Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 drivers/net/bonding/bond_main.c |   16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -4883,14 +4883,16 @@ int bond_create(char *name, struct bond_
 	down_write(&bonding_rwsem);
 
 	/* Check to see if the bond already exists. */
-	list_for_each_entry_safe(bond, nxt, &bond_dev_list, bond_list)
-		if (strnicmp(bond->dev->name, name, IFNAMSIZ) == 0) {
-			printk(KERN_ERR DRV_NAME
+	if (name) {
+		list_for_each_entry_safe(bond, nxt, &bond_dev_list, bond_list)
+			if (strnicmp(bond->dev->name, name, IFNAMSIZ) == 0) {
+				printk(KERN_ERR DRV_NAME
 			       ": cannot add bond %s; it already exists\n",
-			       name);
-			res = -EPERM;
-			goto out_rtnl;
-		}
+				       name);
+				res = -EPERM;
+				goto out_rtnl;
+			}
+	}
 
 	bond_dev = alloc_netdev(sizeof(struct bonding), name ? name : "",
 				ether_setup);
-- 


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