Re: CURRENT freezes on Laitude D520

> > I didn't suggest to turn off mpsafenet forever and forget, I just
> > wanted to check my guess.  I would like to help to debug the
> > problem but I need some initial instructions to start.  There is a
> > firewire console.  What do I need to check?
>
> Start with the information in my followup e-mail to Andrew:
>
> - Configure WITNESS and see if you get any console output regarding
>   lock order problems.

Yes, there is one:

 lock order reversal
 1st 0xd0f277c8 inp (rawinp) _at_ /usr/src/sys/netinet/raw_ip.c
 2nd 0xd0ecbb54 wi0 (network driver) _at_ /usr/src/sys/modules/wi/../../dev/wi/if_wi.c
 KDB
 db_trace_self_wrapper(ce626f9d) at db_trace_self_wrapper+0x25
 kdb_backtrace(ffffffff,ce6a6378,ce6a6b20,ce65bd24,ce6e4ed0,...) at kdb_backtrace+0x29
 witness_checkorder(d0ecbb54,9,d0e73d13,388) at witness_checkorder+0x4db
 _mtx_lock_flags(d0ecbb54,0,d0e73d13,388,ce4d8cdd,...) at _mtx_lock_flags+0x1e
 wi_start(d0e05800) at wi_start+0x32
 if_start(d0e05800) at if_start+0x53
 ether_output_frame(d0e05800,d0d18100,0,1,0,...) at ether_output_frame+0x180
 ether_output(d0e05800,d0d18100,d0e652b0,d0e61bb8,ce6e6b18,...) at ether_output+0x3c0
 ieee80211_output(d0e05800,d0d18100,d0e652b0,d0e61bb8,0,...) at ieee80211_output+0x33
 ip_output(d0d18100,0,e1afbb38,20,0,...) at ip_output+0x7f0
 rip_output(d0d18100,d102ee44,1d2722c3,2000,e1afbbf0,...) at rip_output+0x29b
 rip_send(d102ee44,0,d0d18100,0,0,...) at rip_send+0x4f
 sosend_generic(d102ee44,0,0,d0d18100,0,...) at sosend_generic+0x3e1
 sosend(d102ee44,0,0,d0d18100,0,...) at sosend+0x22
 ng_ksocket_rcvdata(d10ab280,d104f750,1,e1afbc78,0,...) at ng_ksocket_rcvdata+0xa3
 ng_apply_item(d10ab200,d104f750,0,0,d10ab200,...) at ng_apply_item+0xf8
 ngintr(0) at ngintr+0x13d
 swi_net(0) at swi_net+0xba
 ithread_execute_handlers(d09acb40,d09dba00) at ithread_execute_handlers+0xce
 ithread_loop(d09dc180,e1afbd38,ce697af0,0,ce622832,328) at ithread_loop+0x4f
 fork_exit(ce4cdf0c,d09dc180,e1afbd38) at fork_exit+0x68
 fork_trampoline() at fork_trampoline+0x8
 --- trap 0x1, eip = 0, esp = 0xe1afbd6c, ebp = 0 ---

At this point ifconfig wlan0 hangs, reboot hangs.

> - Try setting net.isr.direct=0 and see if the problem goes away.

This indeed help.  LOR has gone and wireless works.

> - Try removing options PREEMPTION and see if the problem goes away.

Haven't try.

-- 
Maxim Konovalov