any vm gurus in the house? :) (was: Fatal trap 12, at use qemu)

[Andrew Muhametshin]

Juergen Lock wrote:
> In article <460D7A37.9080408 at dobrohot.org> you write:
>   
>> http://www.freebsd.org/cgi/query-pr.cgi?pr=110892
>>
>> Crash of system at use of the emulator "qemu"
>> <...>
>>     
>
> (looking at the pr...)  object is NULL, anyone have an idea how that
> could have happened?  (You seem to be low on ram, maybe kqemu is
> stressing the vm system in an unusual way in that case?  btw kqemu
> no longer is closed source now...)  Also, is this an smp box?
> You could try a few things while we wait for insights from vm gurus:
> <...>
>   

I am sorry - I not the programmer and I do not understand the debugging 
information  - I the usual user. ;)
But, probably, I have understood that has occured... Some minutes prior 
to start "Qemu", I have changed value of "shared memory: shmmax & shmall 
(On the basis of the Handbook:7.4)" using a command "sysctl(8)"... It 
has appeared, that if to change values of "shared memory" not through 
"/etc/sysctl.conf", but by means of a command "sysctl(8)" - it is 
inevitable, later (not at once) there will be a crash of system. Thus, 
the "Qemu" did not cause crash -  It was simply casual concurrence.

Forgive, for the erroneous message. Also forgive for my English.

Andrew R.M.