Hi, When supplying wpa_supplicant.conf with incorrect passwords, but a valid SSID, I have seen kernel panics several times when using USB based WLAN dongles. When only supplying a valid password, no panic has been seen.
How to reproduce: 1) configure invalid password 2) wpa_cli: reconfigure 3) configure valid password 4) wpa_cli: reconfigure 5) goto 1 The USB commands which are executed inside the newstate callback usually take very little time, but still not as little time as PCI read/writes. I've forced slower operation in the newstate callback, and can reproduce warning printouts from the IEEE802.11 layer in FreeBSD. Try to apply the following patch to your USB code: http://p4web.freebsd.org/@@180604?ac=10 In my opinion the deferring of all states to a single task is wrong. There should be at least one task per possible state, and the queuing mechanism should follow the last-queued is last executed rule. This is not the case with the task-queue mechanism in the kernel. See the USB code's task-queue replacement which I think the IEEE802.11 stack in FreeBSD could take advantage of. src/sys/dev/usb/usb_process.c Description of panics. I didn't have core dump enabled on this box, so please bear over with the following hand-written notes: 1) A vap->iv_bss == NULL, inside ratectl task in RUM driver. 2) A memcpy() fails inside the iee80211...newstate_cb() 3) This and similar printouts are seen: wlan0: ieee80211_new_state_locked: pending AUTH -> ASSOC transition lost --HPS _______________________________________________ freebsd-usb@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "freebsd-usb-unsubscr...@freebsd.org"
