In setenvPreload, before any of the returning false, there is a startup_printf call, which will print some error message when setting DYNINST_DEBUG_STARTUP=1. So, you can add startup_printf before that return, run it again, and see if the corresponding message showed up.
For the example issue, you can try this PR ( https://github.com/dyninst/dyninst/pull/457), which should fix the problem. Let me know what you find. On Thu, Apr 26, 2018 at 11:18 AM, Alberto Olmo <[email protected]> wrote: > Hi Xiaozhu, > > Sorry, could you please tell me how I can see if that is the line of code > that is failing? I believe that should be the one because the error message > I am getting apparently comes from the *setenvPreload *function, but I am > not 100% sure, > > At first, I tried to install the current master branch but I got an error > with the *CodeCoverage *example where it said that couldn't find it so, I > decided to use your tagged versions instead and that problem did not appear > to me again, > > Thanks > > Alberto Olmo. > > > 2018-04-26 15:29 GMT+02:00 Xiaozhu Meng <[email protected]>: > >> Hi Alberto, >> >> I think your errors are caused by function PCProcess::setEnvPreload (in >> dyninstAPI/src/unix.C) returning false. In this function, there are >> error loggings for returning false, except for one location (Line 334： >> bool result = SymtabAPI::Symtab::openFile(symt_obj, fileName); and Line >> 335: if( !result ) return false;) >> >> Can you confirm that it is this line of code causing the error (the line >> number may differ because I looked at the current master branch)? >> >> Another thing to try is to install the current master branch and see if >> the same error happens. >> >> Thanks, >> >> --Xiaozhu >> >> On Thu, Apr 26, 2018 at 4:42 AM, Alberto Olmo <[email protected]> >> wrote: >> >>> Hi Xiaozhu, >>> >>> I have double checked and both libraries that you pointed out were of >>> the same version. I have tried to run the program with one or the other and >>> none of them are found by Dyninst (the same error persists). Also, maybe >>> it's very obvious but, I have noticed if I delete *DYNINST_API_RT_LIB* >>> and/or *DYNINSTAPI_RT_LIB* environment variables, the error does not >>> change either. >>> >>> Finally, I have also installed Dyninst 9.3.0 in a Lubuntu v17.10 32 bit >>> VM and my application seems to work (I haven't been able to make v9.3.2 >>> work with the Counter Mutator example in Lubuntu) however, I would like to >>> make it work on the CentOS 7. >>> >>> All of that makes me think that maybe the problem stems from the >>> dependencies or something that I am not doing well, but I am definitely not >>> sure as I could install Dyninst in both machines without any errors. >>> >>> What would you recommend me that I try next? >>> >>> Thanks again for your help, >>> >>> >>> Alberto Olmo. >>> >>> >>> 2018-04-25 17:27 GMT+02:00 Xiaozhu Meng <[email protected]>: >>> >>>> Hi Alberto, >>>> >>>> From your log for the successful run, it seems like you have multiple >>>> instances of Dyninst installed: one in >>>> /home/aolmo/soft/dyninst-9.3.2/install/lib/ >>>> and the other one in /usr/local/lib/. Do you know whether these two >>>> instances of Dyninst are the same version? I would recommend that you >>>> ensure that you compile your application and run your application with the >>>> exact same installation of Dyninst. >>>> >>>> I am not sure whether this is the cause, but it is indeed strange that >>>> one application can find DyninstRT, but the other one cannot find it. >>>> >>>> Thanks, >>>> >>>> --Xiaozhu >>>> >>>> On Wed, Apr 25, 2018 at 2:02 AM, Alberto Olmo <[email protected]> >>>> wrote: >>>> >>>>> Hello Xiaozhu, >>>>> >>>>> I have doble checked and I don't get much more debug information than >>>>> the one I sent you in the last email. All I can see is this: >>>>> >>>>> Enabling DyninstAPI startup debug >>>>>> Enabling DyninstAPI startup debug >>>>>> Failed to set environment var to preload RT library >>>>>> --FATAL-- #68: Dyninst was unable to create the specified process >>>>>> --FATAL-- #68: create process failed bootstrap >>>>>> DynInst Exception: Process creation failed, Object name: my_app >>>>>> Creating process my_app in directory ./ >>>>>> [140571584620416]dynProcess.C[85]: stdin: 0, stdout: 1, stderr: 2 >>>>>> Failed to set environment var to preload RT library >>>>>> --FATAL-- #68: Dyninst was unable to create the specified process >>>>>> --FATAL-- #68: create process failed bootstrap >>>>>> DynInst Exception: Process creation failed, Object name: my_app >>>>> >>>>> >>>>> I have also attached to this email the same log (log.txt) in the event >>>>> you wanted to see it in a file as well as the logs from a successful >>>>> Dyninst execution with a synthetic app, that only counts the number of >>>>> times a function is called (mutator-counter-log.txt). >>>>> >>>>> What do you think it may be happening? >>>>> >>>>> Thank you very much for your help, >>>>> >>>>> >>>>> Alberto Olmo. >>>>> >>>>> >>>>> 2018-04-24 17:19 GMT+02:00 Alberto Olmo <[email protected]>: >>>>> >>>>>> Hi Xiaozhu, >>>>>> >>>>>> I currently don't have access to the machine where I have Dyninst >>>>>> installed. I will send the debugging log tomorrow if you don't mind, >>>>>> I am using a 64 bit CentOS 7, >>>>>> >>>>>> Thanks for your rapid response, >>>>>> >>>>>> >>>>>> >>>>>> Alberto Olmo. >>>>>> >>>>>> >>>>>> 2018-04-24 16:49 GMT+02:00 Xiaozhu Meng <[email protected]>: >>>>>> >>>>>>> Hi Alberto, >>>>>>> >>>>>>> What's your platform (windows or linux; 32bit or 64bit)? Could you >>>>>>> send me the debugging log from DYNINST_DEBUG_STARTUP=1？ >>>>>>> >>>>>>> Thanks, >>>>>>> >>>>>>> --Xiaozhu >>>>>>> >>>>>>> On Tue, Apr 24, 2018 at 4:49 AM, Alberto Olmo <[email protected]> >>>>>>> wrote: >>>>>>> >>>>>>>> To whom it may concern, >>>>>>>> >>>>>>>> My name is Alberto, a student at the Universitat Autonoma de >>>>>>>> Barcelona, and I am currently trying to install the Dyninst API in >>>>>>>> order to >>>>>>>> use it in another application. I have been able to install version >>>>>>>> 9.3.2 >>>>>>>> and its dependencies and test it with a small program which counts the >>>>>>>> number of times a function is called. It works correctly. >>>>>>>> >>>>>>>> However, now I am trying to use it in another application which (I >>>>>>>> think) needs to call BPatch::processCreate and I get the following >>>>>>>> errors: >>>>>>>> >>>>>>>> Failed to set environment var to preload RT library >>>>>>>>> --FATAL-- #68: Dyninst was unable to create the specified process >>>>>>>>> --FATAL-- #68: create process failed bootstrap >>>>>>>> >>>>>>>> DynInst Exception: Process creation failed, Object name: my_app >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> I do have exported variables *DYNINSTAPI_RT_LIB* and >>>>>>>> *DYNINST_API_RT_LIB* to point to *libdyninstAPI_RT.so* (I think >>>>>>>> depending on the Dyninst version one or the other is needed) as well >>>>>>>> as set >>>>>>>> the flag *DYNINST_DEBUG_STARTUP=1* to get more information about >>>>>>>> the problem. >>>>>>>> >>>>>>>> I have also tried with older versions but the error I get is >>>>>>>> exactly the same, >>>>>>>> >>>>>>>> What would you recommend me that I try? >>>>>>>> >>>>>>>> I would really appreciate any help you could provide me, >>>>>>>> Thank you very much in advance and sorry for the inconveniences, >>>>>>>> >>>>>>>> Alberto Olmo. >>>>>>>> >>>>>>>> >>>>>>>> _______________________________________________ >>>>>>>> Dyninst-api mailing list >>>>>>>> [email protected] >>>>>>>> https://lists.cs.wisc.edu/mailman/listinfo/dyninst-api >>>>>>>> >>>>>>> >>>>>>> >>>>>> >>>>> >>>> >>> >> >
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