Core Dump Missing

This page answers questions like these:

• Where is my core dump?
  
• Why is my core dump missing?
  
• Why do I have no core dump?
  
• Why didn’t my program produce a core dump?
  
• My program crashed, but didn’t leave a core. What’s going on?
  

Missing Core Dump:

• First, check your core-dump file size limit by running:
  ulimit -c
  • If the output value is zero (0), programs will not be able to create a core dump.
  • To remedy the situation, you need the limit to be above zero.
  • You can make the limit as large as possible by running:
    ulimit -c unlimited
  • Caveats: A new limit only applies to processes started by the current shell. To change it for all processes, put the command in your  .profile  or  .bashrc  file.
• Second, on Linux check your the default core dump directory:
  cat /proc/sys/kernel/core_pattern
  • If this file contains a path and file pattern, core dumps will be written into that path with the corresponding file pattern (assuming the directory is writable and has sufficient disk space).