Hello Marcelo, I would like to inform you that unfortunately the committed patch is wrong http://www.kernel.org/git/?p=linux/kernel/git/marcelo/linux-2.4.git;a=commit;h=ecf3337f76eaa94c5a771308d184dc248b74b725 + int rx_work_limit = + (sis_priv->dirty_rx - sis_priv->cur_rx) % NUM_RX_DESC; when dirty_rx = cur_rx it computes limit=0, but should be NUM_RX_DESC Could you please drop the wrong patch and use a new one based on the version approved by Daniele Venzano and Jeff Garzik http://www.kernel.org/git/?p=linux/kernel/git/jgarzik/netdev-2.6.git;a=commitdiff_plain;h=7380a78a973a8109c13cb0e47617c456b6f6e1f5;hp=b2795f596932286ef12dc08857960d654f577405 Thank you, Vasily Averin SWSoft Linux kernel Team sis900: come alive after temporary memory shortage 1) Forgotten counter incrementation in sis900_rx() in case it doesn't get memory for skb, that leads to whole interface failure. Problem is accompanied with messages: eth0: Memory squeeze,deferring packet. eth0: NULL pointer encountered in Rx ring, skipping 2) If counter cur_rx overflows and there'll be temporary memory problems buffer can't be recreated later, when memory IS available. 3) Limit the work in handler to prevent the endless packets processing if new packets are generated faster then handled. Signed-off-by: Konstantin Khorenko Signed-off-by: Vasily Averin ---