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  2. stackwalker loads all symbol files, but still doesn't symbolicate anything

stackwalker loads all symbol files, but still doesn't symbolicate anything

由 谁说胖子不能爱 提交于 2019-12-02 20:59:26
Dawid Drozd

Some extra informations:

http://www.chromium.org/developers/decoding-crash-dumps

http://blog.inventic.eu/2012/08/qt-and-google-breakpad/

My core problem was that in symbols folder i don't have folder with exactly same name as my binary. Simply everything name as your binary. Example on linux:

$google-breakpad/src/tools/linux/dump_syms/dump_syms ./MyBinary > MyBinary.sym
$head -n1 MyBinary.sym

it will print something like

MODULE Linux x86_64 6EDC6ACDB282125843FD59DA9C81BD830 MyBinary

Now make something like:

$ mkdir -p ./symbols/MyBinary/6EDC6ACDB282125843FD59DA9C81BD830
$ mv test.sym ./symbols/MyBinary/6EDC6ACDB282125843FD59DA9C81BD830

And on the end

google-breakpad/src/processor/minidump_stackwalk 09fd98ec-d55c-29e1-4ae067b0-4aaec0d6.dmp ./symbols

Or you can use simple script:

Example usage:

./script.py --dump_syms=/home/user/projects/libs/google-breakpad/src/tools/linux/dump_syms/dump_syms \
--minidump_stackwalk=/home/user/projects/libs/google-breakpad/src/processor/minidump_stackwalk \
--binary=./MyBinary \
--output_dir=/home/user/.config/MyBinary/dumps/
--dump_file=/home/user/.config/MyBinary/dumps/75ad100c-ef7c-c4eb-1da750f8-45586148.dmp

script:

#!/usr/bin/python

import sys
import getopt
import os
import errno
from os.path import basename

def make_sure_path_exists(path):
    try:
        os.makedirs(path)
    except OSError as exception:
        if exception.errno != errno.EEXIST:
            raise


def main(argv):

    dumpSymsExe = ""
    binary = ""
    outputDir = ""
    minidumpExe = ""
    dumpFile = ""

    try:                                
        opts, args = getopt.getopt(argv, "", ["help", "dump_syms=","binary=",
                                              "output_dir=","dump_file=",
                                              "minidump_stackwalk="])
    except getopt.GetoptError:
        print ("Please pass correct arguments!")
        sys.exit(2)  

    for opt, arg in opts:
        if opt == "--dump_syms":
            dumpSymsExe = arg
        if opt == "--binary":
            binary = arg
        if opt == "--output_dir":
            outputDir = arg
        if opt == "--dump_file":
            dumpFile = arg
        if opt == "--minidump_stackwalk":
            minidumpExe = arg

    outputFile =  outputDir + basename(binary) + ".sym"
    command = '{0} {1} > {2}'.format(dumpSymsExe,binary,outputFile)

    print ('Running {0}'.format(command) )
    os.system(command)

    symFile = open(outputFile, 'r')
    firstLine = symFile.readline()

    print ('First line {0}'.format(firstLine))
    lineArguments = firstLine.split(' ')
    print ('Magic file {0}'.format(lineArguments[-2]))

    symbolsDir = (outputDir + "symbols/" + basename(binary) + "/" +
                  lineArguments[-2] + "/")

    make_sure_path_exists(symbolsDir)
    os.rename(outputFile,symbolsDir + basename(outputFile))

    command = '{0} {1} {2}'.format(minidumpExe,dumpFile,outputDir + "symbols")
    print command
    os.system(command)

if __name__ == "__main__":
    main(sys.argv[1:])

Another thing can be if you look at end of your detailed crash info you will see something like:

0x7f75e2695000 - 0x7f75e28aefff  librtmp.so.0  ???
0x7f75e28af000 - 0x7f75e2ae1fff  libidn.so.11.6.11  ???
0x7f75e2ae2000 - 0x7f75e2d0bfff  libexpat.so.1.6.0  ???
0x7f75e2d0c000 - 0x7f75e2fadfff  libfreetype.so.6.10.1  ???
0x7f75e2fae000 - 0x7f75e31b7fff  libXrandr.so.2.2.0  ???
0x7f75e31b8000 - 0x7f75e33bbfff  libdl-2.17.so  ???
0x7f75e33bc000 - 0x7f75e35c7fff  libdrm.so.2.4.0  ???
0x7f75e35c8000 - 0x7f75e37cdfff  libXxf86vm.so.1.0.0  ???
0x7f75e37ce000 - 0x7f75e39ebfff  libxcb.so.1.1.0  ???
0x7f75e39ec000 - 0x7f75e3bf0fff  libxcb-dri2.so.0.0.0  ???
0x7f75e3bf1000 - 0x7f75e3e07fff  libxcb-glx.so.0.0.0  ???
0x7f75e3e08000 - 0x7f75e4009fff  libX11-xcb.so.1.0.0  ???
0x7f75e400a000 - 0x7f75e420ffff  libXfixes.so.3.1.0  ???
0x7f75e4210000 - 0x7f75e4412fff  libXdamage.so.1.1.0  ???
0x7f75e4413000 - 0x7f75e4624fff  libXext.so.6.4.0  ???
0x7f75e4625000 - 0x7f75e4849fff  libglapi.so.0.0.0  ???
0x7f75e484b000 - 0x7f75e4aa9fff  libcurl-gnutls.so.4.3.0  ???  (WARNING: No symbols, libcurl-gnutls.so.4.3.0, B662FA5595A461FACCB60A9D323597830)
0x7f75e4aaa000 - 0x7f75e4d26fff  libGLEW.so.1.8.0  ???
0x7f75e4d2b000 - 0x7f75e505ffff  libX11.so.6.3.0  ???
0x7f75e5060000 - 0x7f75e5278fff  libz.so.1.2.8  ???
0x7f75e5279000 - 0x7f75e54b4fff  libfontconfig.so.1.7.0  ???
0x7f75e54b5000 - 0x7f75e56c5fff  libglfw.so.2.6  ???
0x7f75e56c6000 - 0x7f75e5a88fff  libc-2.17.so  ???  (WARNING: No symbols, libc-2.17.so, 8A0DCFA21992EC412D98B231AF91DC1D0)
0x7f75e5a8e000 - 0x7f75e5ca3fff  libgcc_s.so.1  ???
0x7f75e5ca4000 - 0x7f75e5fa7fff  libm-2.17.so  ???
0x7f75e5fa8000 - 0x7f75e6296fff  libstdc++.so.6.0.18  ???  (WARNING: No symbols, libstdc++.so.6.0.18, 676136699F3BB3E58C19B83D8A296B660)
0x7f75e62ac000 - 0x7f75e64c4fff  libpthread-2.17.so  ???  (WARNING: No symbols, libpthread-2.17.so, 4CDAF5B4170C674F1A96E33F25274E0A0)
0x7f75e64c9000 - 0x7f75e6725fff  libGL.so.1.2.0  ???
0x7f75e6727000 - 0x7f75e69a4fff  libextension.so  ???  (WARNING: No symbols, libextension.so, 13E1DBC274C6099DEEF37259177DD16D0)
0x7f75e69a5000 - 0x7f75e6fa8fff  libcocos2d.so  ???
0x7f75e6fad000 - 0x7f75e6fcffff  ld-2.17.so  ???
0x7f75e6fde000 - 0x7f75e701ffff  libJsonCpp.so  ???
0x7f75e7021000 - 0x7f75e710efff  libEasySqlite.so  ???  (WARNING: No symbols, libEasySqlite.so, B4426B9A03AB419B458607C780DCCB1B0)
0x7f75e7142000 - 0x7f75e71ccfff  **libJansson.so**  ???  (**WARNING: No symbols**, libJansson.so, 31CEB5F4D63244C3BF657C501398D8650)

As you can see i don't have symbols for libJansson.so and many others that means that in my "symbols" folder i need to have symbols for this library.

I can generate them in similar way 

$google-breakpad/src/tools/linux/dump_syms/dump_syms ./libJansson.so > libJansson.so.sym
$head -n1 libJansson.so.sym

it will print something like

MODULE Linux x86_64 65C874A94F8B264EAE501D2694DFCBA60 libJansson.so

Now make something like:

$ mkdir -p ./symbols/libJansson.so/65C874A94F8B264EAE501D2694DFCBA60
$ mv test.sym ./symbols/libJansson.so/65C874A94F8B264EAE501D2694DFCBA60

and now i can see stack trace for libJansson.so

So if you use my script you must only do something like this:

./script.py --dump_syms=/home/user/projects/libs/google-breakpad/src/tools/linux/dump_syms/dump_syms \
--minidump_stackwalk=/home/user/projects/libs/google-breakpad/src/processor/minidump_stackwalk \
--binary=./MyBinary --output_dir=/home/user/.config/MyBinary/dumps/ \
--dump_file=/home/user/.config/MyBinary/dumps/75ad100c-ef7c-c4eb-1da750f8-45586148.dmp

./script.py --dump_syms=/home/user/projects/libs/google-breakpad/src/tools/linux/dump_syms/dump_syms \
--minidump_stackwalk=/home/user/projects/libs/google-breakpad/src/processor/minidump_stackwalk \
--binary=./libJansson.so --output_dir=/home/user/.config/MyBinary/dumps/ \
--dump_file=/home/user/.config/MyBinary/dumps/75ad100c-ef7c-c4eb-1da750f8-45586148.dmp

use the "minidump_stackwalk" in linux to parse the '.sym' file generated on windows. But,firstly, you must transform the '.sym' from dos format to unix format and the encoding type to UTF-8. if you skip it,the problem you asked above would appear.

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google-breakpad
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