Valgrind's Memcheck + Valkyrie: Detect user space run time memory errors

In my last post Valgrind's Memcheck: Detect user space run time memory errors, I covered Valgrind's memcheck tool. I am not that impressed with memcheck's text based reporting of dyanamic analysis errors. In this post, I will cover Valkyrie - an intuitive GUI based tool to analyze memcheck's dyanmic analysis errors.

memcheck usage for Valkyrie

• Step1: Recompile the program:

gcc -g prog.c -o <prog_name>

• Step2: Run the program in valgrind emulator:

valgrind --leak-check=full --track-origins=yes --xml-file=<log_file.xml> --xml=yes <prog_name> <prog_args>

Usage Example:
  

I used the code at https://github.com/babuneelam/valgrind_tests/blob/master/vg_tests.c to explore 8 of the 9 tests mentioned in my last post Valgrind's Memcheck: Detect user space run time memory errors. 

root@babu-VirtualBox:~/valgrind_tests# valgrind --leak-check=full --track-origins=yes --xml-file=vk_log.xml --xml=yes ./vg_test.o 1 2 3 4 5 7 8 9

10

*num = 0 

i[-1] = 0 

Please type a bunch of characters and hit enter.

34

root@babu-VirtualBox:~/valgrind_tests#

Reporting and Analysis of memcheck results using Valkyrie

apt-get install valkyrie

apt-get install vim-gtk

root@babu-VirtualBox:~/valgrind_tests# valkyrie --view-log ./vk_log.xml &

[1] 12307

root@babu-VirtualBox:~/valgrind_tests# MainWindow::runTool( tool: 0, proc: 1 )

Valkyrie::runTool( 0, 1)

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Below are some screenshots of Valkyrie for my log file:

• Top level screen displaying headlines of all the dynamic analysis errors:

• Screen displaying Memory Leak along with stack trace:

• Screen displaying Double free along with stack trace:

Hope this helps.