HATAYAMA Daisuke wrote:
> However, I think that this could be a useful feature, and I did
> take a quick look at how it could be done several months ago when
> it was brought up on this mailing list.  However, as you discovered,
 
 I hear for the first time that the same kind of proposal was already
 proposed previously on this mailing list. I try to find it to compare
 with mine. 
AFAIK many people are interested in this feature and it has been discussed 
before but nobody actually offered a patch until now. Last thread I am aware of 
is this one: 
https://www.redhat.com/archives/crash-utility/2010-February/msg00055.html
Admittedly, that thread is just about extracting an userland backtrace. Maybe 
your patch can be adapted to add a "btu" command (or maybe "bt -u") to
extract 
an userland backtrace directly?
Thank you very much anyway :)