kern/122318 (CMake core dumping, chroot exiting)

[Chagin Dmitry]

On Wed, 23 Jul 2008, Sean C. Farley wrote:

> On Wed, 23 Jul 2008, Roman Divacky wrote:
>
>> On Wed, Jul 23, 2008 at 12:50:51PM -0500, Sean C. Farley wrote:
>>> I am seeing if anyone has any insight on this PR (kern/122318[1]).
>>> It would be nice to once again build using cmake within a Linux
>>> chroot.  :)
>>> 
>>> Basically, the bug is that not only that cmake is dumping core; it is
>>> also forcing the user out of the chroot environment.  Here is the
>>> command used to start the chroot:
>>> /compat/linux/usr/sbin/chroot <chroot path> su - <build user>
>>>
>>>   1. http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/122318
>> 
>> looking at the trace you provided I guess this is what's going on:
>> 
>> cmake forks/execs gcc and waits to be notified about the success of
>> the command it tried, the notification comes (the SIGCHLD) the handler
>> tries do something and then returns and now something is wrong and it
>> receives the SIGSEGV..
>> 
>> or am I wrong and linux_ktrace does not translate signals and the
>> SIGCHLD is in fact SIGTSTP?
>> 
>> what is the fd 3 and 4? can you provide full ktrace.out?
>
> I have the full output of the execution here using ktrace -d:
> http://www.farley.org/freebsd/tmp/cmake-kdump.txt
>
> Sean
>

hi!

Please, can you run ktrace with -i flag?

thnx!

-- 
Have fun!
chd