From: Alan Cox (eecac.dgjucvustb@gw-1-66.tvgawex.pl)
Date: Sun Jun 04 2000 - 19:43:41 EEST
> None so far. This is weird.
>
> > Code; c01938bb <scc_isr_dispatch+147/7d4> <=====
> > 0: 8a 01 movb (%ecx),%al <=====
> > Code; c01938bd <scc_isr_dispatch+149/7d4>
> > 2: ee outb %al,(%dx)
>
> Hmm, I think you disassembled the following from scc_txint():
>
> Outb(scc->data,*skb->data); /* send byte */
> skb_pull(skb, 1);
> Seems it is trying to transmit data from an skb with
> skb->data == NULL. How is *that* possible? [Alan...?]
It shouldnt be possible. It would imply scc->tx_buff was perhaps
pointing to the wrong place or to a freed buffer.
The scc code does actually delete from its own queue, however I can't see any
flaws in the code
This archive was generated by hypermail 2b29 : Sun Jun 04 2000 - 19:53:06 EEST