Bug #1784
Updated by tuxillo almost 10 years ago
Hey guys, It seems I've either munged the iwn driver I'm working on or I'm genuinely hitting an edge case in the TKIP code. I got the following panic. I'm attaching a tarball of the source directory and can include patches from the unaltered FreeBSD source if needed. My main concerns regarding the wifi driver porting in general is my weak understanding of the mbuf handling code and the bus_dma* code. Any ideas are appreciated. Unread portion of the kernel message buffer: panic: not enough data, data_len 3 space 2 Trace beginning at frame 0xd801c9b4 panic(ffffffff) at panic+0x8e panic(c0609324,3,2,db20f500,5f0873f1) at panic+0x8e michael_mic(1a,3,d801ca2c,c465dff8,d7d682b8) at michael_mic+0x455 tkip_enmic(d7d6b784,db210000,0) at tkip_enmic+0xb5 ieee80211_encap(d7dbb9c0,d7d6b6b8,db20bd00,d7dbb9c0,d7d682b8) at ieee80211_encap+0x863 ieee80211_start(c48d8198,1,0,1,0) at ieee80211_start+0x657 ifq_dispatch(c48d8198,db20bd00,d801cb38) at ifq_dispatch+0x13a ether_output_frame(c48d8198,db20bd00,db20bd9a,db20bd9a,0) at ether_output_frame+0x1be ether_output(c48d8198,db20bd00,c4549570,c46ef940,14) at ether_output+0x29b ieee80211_output(c48d8198,db20bd00,c4549570,c46ef940,0) at ieee80211_output+0x2f ip_output(db20bd00,0,d7c20104,10000,0) at ip_output+0xbc1 tcp_output(d7c20188,41eb68,0,db41eb68,1) at tcp_output+0x1449 tcp_usr_send(d7b616e0,0,c47b8700,0,0) at tcp_usr_send+0x1d3 netmsg_pru_send(db41eb68,c0714958,c0714958,d801cd84,c03def13) at netmsg_pru_send+0x1c netmsg_service(db41eb68,1,0,c0714440,ff800000) at netmsg_service+0x58 tcpmsg_service_loop(0,0,0,0,0) at tcpmsg_service_loop+0x1d lwkt_exit() at lwkt_exit