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SubjectRe: 2.6.17-rc6-mm1
Ingo Molnar wrote:
> ieee1394 reuses the skb infrastructure of the networking code,
> and uses two skb-head queues: ->pending_packet_queue and
> hpsbpkt_queue. The latter is used in the usual fashion: processed
> from a kernel thread. The other one, ->pending_packet_queue is also
> processed from hardirq context (f.e. in hpsb_bus_reset()), which is
> not what the networking code usually does (which completes from
> softirq or process context). This locking assymetry can be totally
> correct if done carefully, but it can also be dangerous if
> networking helper functions are reused, which could assume
> traditional networking use.

The pending_packet_queue is only accessed from within
drivers/ieee1394/ieee1394_core.c, and only via net/core/skbuff.c's
access functions for queueing/ dequeueing/ queuewalking. Or am I missing
Stefan Richter
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