Re: Another deadlock (was PR/56925)

[BERTRAND Joël <joel.bertrand%systella.fr@localhost>]

BERTRAND Joël a écrit :
> 	Hello,
> 
> 	If iscsi-9-current.diff provided by Michael van Elst seems to fix
> panic, it doesn't fix deadlock. Last night, when bacula was starting,
> system has stopped once again in this deadlock.
> 
> 	No trace in log or console, and I cannot switch in kernel debugger
> (keyboard doesn't respond, same constatation on serial line).
> 
> 	This morning, I have tried to boot with the same kernel, but built with
> LOCKDEBUG option. After 30 minutes, system did not reach init ! But
> there was no usable information on console.
> 
> 	I don't know how investigate. I have uploaded on
> ftp://fermat.systella.fr (netbsd directory) :
> 
> - CUSTOM.CFG (kernel configuration)
> - ISCSI-9-CURRENT.DIFF (patch against -9 to fix ccb panic)
> - NETBSD.BZ2 (kernel build with CUSTOM.CFG config file)
> - NETBSD_GDB.BZ2 (same configuration but with DBG)
> - NETBSD_LOCKDEBUG.BZ2 (same configuration with LOCKDEBUG, it doesn't
> boot or very very very slowly)

	I have done a diff between GENERIC kernel and mine. My kernel contains
iscsi, altq and all but tpm GENERIC options. I use altqd for QoS. Maybe
this deadlock is a side effect with altqd.

/etc/altq.conf :
#tbrconfig
interface wm2 bandwidth 4M priq

class priq wm2 high_class NULL priority 1
class priq wm2 low_class NULL priority 0 default

filter wm2 high_class 0 1194 0 0 17
filter wm2 high_class 0 0 0 1194 17
filter wm2 high_class 0 1195 0 0 17
filter wm2 high_class 0 0 0 10240 17
filter wm2 high_class 0 10000 0 0 17
filter wm2 high_class 0 0 0 10000 17
filter wm2 high_class 0 53 0 0 17
filter wm2 high_class 0 53 0 0 6

interface tap0 bandwidth 2M priq

class priq tap0 high_class_vpn NULL priority 1
class priq tap0 low_class_vpn NULL priority 0 default

filter tap0 high_class_vpn 192.168.10.250 0 0 0 17
filter tap0 high_class_vpn 0 0 192.168.10.250 0 17
filter tap0 high_class_vpn 192.168.10.253 0 0 0 17
filter tap0 high_class_vpn 0 0 192.168.10.253 0 17

interface agr0 bandwidth 1000M priq

class priq agr0 high_class_lan NULL priority 1
class priq agr0 low_class_lan NULL priority 0 default

filter agr0 high_class_lan 192.168.10.250 0 0 0 17
filter agr0 high_class_lan 0 0 192.168.10.250 0 17
filter agr0 high_class_lan 192.168.10.253 0 0 0 17
filter agr0 high_class_lan 0 0 192.168.10.253 0 17
filter agr0 high_class_lan 0 10000 0 0 17
filter agr0 high_class_lan 0 0 0 10000 17

# QoS
conditioner agr0 af41_agr0 <mark 0xb8>
filter agr0 af41_agr0 0 10000 0 0 17
filter agr0 af41_agr0 0 0 0 10000 17
filter agr0 af41_agr0 0 0 192.168.10.250 0 17
filter agr0 af41_agr0 0 0 192.168.10.253 0 17

conditioner tap0 af41_tap0 <mark 0xb8>
filter tap0 af41_tap0 0 0 192.168.10.250 0 17
filter tap0 af41_tap0 0 0 192.168.10.253 0 17
filter tap0 af41_tap0 0 10000 0 0 17
filter tap0 af41_tap0 0 0 0 10000 17

	Regards,

	JB