On Fri, Oct 30, 2015 at 2:03 AM, Johan Fabry <jfa...@dcc.uchile.cl> wrote: > > OK, back with access to the Ubuntu machine, I reproduced the crash when > running under gdb (reproducing it is never an issue, finding the minimal > case is the issue). See below for gdb output. But my vm has no debug > information compiled, so it is not really useful. Can I download a vm with > debug info compiled from somewhere? I would prefer to avoid having to > download the sources and compile et cetera …
Why not give it a go? :) I found it dead simple to compile the VM for the first time following instructions at... [1] https://github.com/pharo-project/pharo-vm This was on OSX and the only problem I had was _not_ following the instructions and using XCode 10.9 instead of 10.6. I can't speak for Ubuntu but its the reference Unix platform. I guess you'll get better support getting started with the standard instructions (since we'd like them "perfect" and more people will be able to replicate a problem with these than replicate your unique problem) One thing though, could someone update [1] to describe how to get a debug VM, since that must be a common reason someone wants to compile their own VM for the first time. I hunted around for some info but could only find tips from a few years ago and I'm not sure if they still apply Debug a VM (by Mariano) https://marianopeck.wordpress.com/2011/04/10/building-the-vm-from-scratch-using-git-and-cmakevmmaker/ https://marianopeck.wordpress.com/2011/04/16/building-the-vm-second-part/ https://vimeo.com/22485382 (PharoCast) Debugging assembly in Pharo VM with GDB (by Melkyades) http://melkyades.blogspot.com.au/2013/07/debugging-assembly-in-pharo-vm-with-gdb.html cheers -ben > > Once I have such a VM I will make some time to further investigate, and > report results. > > Program received signal SIGSEGV, Segmentation fault. > 0xb8c2bc31 in ?? () > (gdb) bt > #0 0xb8c2bc31 in ?? () > #1 0x080fc9f2 in primitiveNativeCall () > #2 0xb4fba770 in ?? () > #3 0xb503b05e in ?? () > #4 0xb503afcb in ?? () > #5 0xb5011abd in ?? () > #6 0xb4fba5c0 in ?? () > (gdb) > > On Oct 27, 2015, at 19:09, Nicolai Hess <nicolaih...@gmail.com> wrote: > > > > 2015-10-26 15:03 GMT+01:00 Johan Fabry <jfa...@dcc.uchile.cl>: >> >> Hi Nicolai, >> >> thanks for following up on this. >> >> I am in the process of determining what causes the crash. I fear that to >> reproduce the problem you will need to have ROS installed, I have not yet >> been able to reproduce it without ROS running. I do not want to inflict the >> installation of ROS on you without being 100% sure. >> >> I am using Roassal because this is for Live Robot Programming >> (http://pleiad.cl/LRP) which uses a dynamic visualization of the running >> code. To reproduce the bug (until now) I need to develop code in LRP when >> using ROS, and then it happens randomly. I realize that this is too much to >> ask for an outsider to reproduce the bug (I did not expect anybody to >> download and install PhaROS to try to reproduce, thanks for that!!). >> >> Can you inform me how I can get you more useful debug info to you? I will >> keep trying to find minimal steps to reproduce in the mean time. > > > No, the best we can hope for is a crash when it is running from debugger, > you can start the vm with a debugger or attach the debugger to a running > process. If we are lucky, the debugger will show a stacktrace. > >> >> >> On Oct 24, 2015, at 19:45, Nicolai Hess <nicolaih...@gmail.com> wrote: >> >> Can you provide the image file. >> What exactly runs in the image (does it depend on ROS or >> does it crash even without it). For what do you >> use Roassal in this environment. >> Can you reproduce the crash with a clean image (and maybe loading >> some package - without all of the ROS-stuff? >> (I just followed the installation guide for PhaROS, but I have no idea >> how to go from here to do anything to reproduce the crash). >> >> >> >> 2015-10-24 21:32 GMT+02:00 Johan Fabry <jfa...@dcc.uchile.cl>: >>> >>> >>> Ben, thanks for replying but since no VM guys are following up on this, >>> apparently, it does not make much sense for me to go this way. >>> >>> Guys, am I to assume there is not help for me on this topic? >>> >>> > On Oct 23, 2015, at 11:03, Ben Coman <b...@openinworld.com> wrote: >>> > >>> > On Thu, Oct 22, 2015 at 2:25 AM, Johan Fabry <jfa...@dcc.uchile.cl> >>> > wrote: >>> >> Hi all, >>> >> >>> >> I am having some unpleasant experiences on Ubuntu 14.04 (experimenting >>> >> with Live Robot Programming on PhaROS). The VM crashes after a random >>> >> amount >>> >> of time (< 25 minutes), with no clear sequence of steps on how to >>> >> reproduce >>> >> the crash. I am using Pharo 4 (Pharo 40622 as installed by PhaROS) + >>> >> Roassal >>> >> which required an install of libcairo2:i386 . VM version details below. >>> >> >>> >> There is no printout on stdout, and the debug.log does not contain >>> >> recent entries (timestamp is always some minutes before the actual crash >>> >> happens). >>> >> >>> >> Is this a known problem? If so, how can I fix it, and if not how can I >>> >> provide more debugging info? >>> >> >>> >> Thanks in advance! >>> > >>> > I'm not much help since I haven't done these myself, but just some >>> > ideas (maybe someone can add more details) >>> > * compile and run a debug vm >>> > * trace all function calls, http://tinyurl.com/gdb-trace-all >>> > >>> >>> >>> >>> ---> Save our in-boxes! http://emailcharter.org <--- >>> >>> Johan Fabry - http://pleiad.cl/~jfabry >>> PLEIAD and RyCh labs - Computer Science Department (DCC) - University >>> of Chile >>> >>> >> >> >> >> >> ---> Save our in-boxes! http://emailcharter.org <--- >> >> Johan Fabry - http://pleiad.cl/~jfabry >> PLEIAD and RyCh labs - Computer Science Department (DCC) - University >> of Chile > > > > > ---> Save our in-boxes! http://emailcharter.org <--- > > Johan Fabry - http://pleiad.cl/~jfabry > PLEIAD and RyCh labs - Computer Science Department (DCC) - University of > Chile >
