Hi All, If the e1000_tx_timeout_task were running concurrently with e1000_down, it seems that they could both attempt to kfree_skb concurrently when running e1000_unmap_and_free_tx_resource. I googled around to find mention of this anywhere with no luck. Has this been discussed already? Thanks, Shaw - : send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html