On 17.03.2010 18:00, Max Laier wrote:
Can you enable WITNESS and compile in DDB. Make sure to report any LORs
and once the system freezes try to enter the debugger and get ps and
locks information.
show allchains
show alllocks
ps
After that you can try to "call doadump" so you get the information in
the coredump and don't have to transcribe it manually.
Thanks,
Max
Sorry, I'm not really an expert of this, but how can I enter the debugger
if the system has frozen?
Ctrl+Alt+ESC (in default configuration).
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I've added this to the kernel
option KDB
option WITNESS
option WITNESS_KDB
option DDB
Now it can't even boot properly. It stops when it tries to configure
networking:
uma_zalloc_arg: zone "256" with the following non-sleepable locks held:
exclusive rw ifnet_rw (ifnet_rw) r = 0 (0xffffffff80e31b20) locked @
/usr/src/sys/net/if.c:414
show allchains
<no result>
show alllocks
exclusive rw ifnet_rw (ifnet_rw) r = 0 (0xffffffff80e31b20) locked @
/usr/src/sys/net/if.c:414
exclusive sx ifnet_sx (ifnet_sx) r = 0 (0xffffffff80e31b40) locked @
/usr/src/sys/net/if.c:414
ps
<returns a lot of stuff. tell me to search something in particular>
call doadump
Cannot dump. Device not defined or unavailable
Hope it helps...
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