On Wed, Nov 14, 2007 at 09:26:18AM +0000, Nj A ([EMAIL PROTECTED]) wrote: > /* The kernel TCP hashtable */ > struct inet_hashinfo __cacheline_aligned tcp_hashinfo = { > .lhash_lock = __RW_LOCK_UNLOCKED (tcp_hashinfo.lhash_lock), > .lhash_users = ATOMIC_INIT (0), > .lhash_wait = __WAIT_QUEUE_HEAD_INITIALIZER (tcp_hashinfo.lhash_wait), > }; > ... > struct sock *sk; > struct sk_buff *skb; > skb = alloc_skb (MAX_TCP_HEADER + 15, GFP_KERNEL); > if (skb == NULL) > printk ("%s: Unable to allocate memory \n", __FUNCTION__); > sk = inet_lookup (&tcp_hashinfo, ip_src, src_port, ip_dst, dst_port, inet_iif > (skb)); > if (!sk) > ... > This portion of code seems to cause the kernel to panic due to dereferencing > a NULL pointer. > Can anyone please tell me what is the error above? > Best Regards, Where exactly? Likely in inet_iif(), since it dereferences dst (routing info), which is not presented after simple alloc_skb(). You have to setup skb correctly, check how ip_rcv() does it.
-- Evgeniy Polyakov - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html