Hello,
Let's say i have added a new field to skbuff.h : char pkt_nr[48].
Let's say i want to be able to say from within sch_generic.c which packets
are enqueued/dequeued (using pkt_nr field from skbuff).
So, continuing, i put ....
sprintf("Packet nr %s dequeued/enqueued",skb->pkt_nr);
.. inside sch_generic.c.
But this causes OOPS when i boot my kernel (of course after compilation). I
think this is because sch_generic is called even before pkt_nr was filled.
In 8139too.c (which receives packets) i do pkt_nr initialization:
spritnf (skb->pkt_nr, val); // for every received pkt.
And i suppose sch_generic gets called even before line above... so it has
null pointer
My question is:
what should i do (and WHERE) to prevent "sprintf("Packet nr %s
dequeued/enqueued",skb->pkt_nr);" from crashing kernel ???
regards
adam
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