Re: [CHECKER] 15 potential pointer dereference errors in 2.4.3

From: Andy Chou (acc@CS.Stanford.EDU)
Date: Thu Apr 05 2001 - 15:56:08 EST

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Here's one more potential bug for 2.4.3.

-Andy

[BUG]
/u2/acc/oses/linux/2.4.3/drivers/isdn/hysdn/hysdn_net.c:309:hysdn_net_create: ERROR:NULL:302:309: Using
NULL ptr "dev" illegally! set by 'kmalloc_Rsmp_93d4cfe6':302

Start --->
        if ((dev = kmalloc(sizeof(struct net_local), GFP_KERNEL)) ==
NULL) {
                printk(KERN_WARNING "HYSDN: unable to allocate mem\n");
                if (card->debug_flags & LOG_NET_INIT)
                        return (-ENOMEM);
        }
        memset(dev, 0, sizeof(struct net_local)); /* clean the structure
*/

Error --->
spin_lock_init(&((struct net_local *) dev)->lock);

-
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