Load the program in GDB and cause the segfault.Save and quit your editor ( ^X in nano).(It should look like: " -trace stack -memory regs code source". Put a minus sign ( -) in front of the word code on that line.Look for the line that starts with layout.gef.rc in your home directory ( nano ~/.gef.rc). If GDB exits, you may need to disable the assembly view. Sometimes GDB will exit/crash when it tries to show you segmentation fault context. Program received signal SIGSEGV, Segmentation fault. Your program should halt when the segmentation fault occurs: gef➤ run For the sample code, just type "run" and hit enter at the GDB prompt: gef➤ run To compile the example: gcc -g -o segfault segfault.c You ran the GDB setup script provided in CSSE 132.Īn example segfault-causing file can be found here.īe sure you compiled with debugging enabled ( -g flag should be part of the gcc line).This tutorial will give you some help debugging segmentation faults Debugging Segmentation Faults using GEF and GDB
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March 2023
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