Core dumped, but core file is not in the current directory?

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Read /usr/src/linux/Documentation/sysctl/kernel.txt.

core_pattern is used to specify a core dumpfile pattern name.

  • If the first character of the pattern is a ‘|’, the kernel will treat
    the rest of the pattern as a command to run. The core dump will be
    written to the standard input of that program instead of to a file.

Instead of writing the core dump to disk, your system is configured to send it to the abrt (meaning: Automated Bug Reporting Tool, not “abort”) program instead. Automated Bug Reporting Tool is possibly not as documented as it should be…

In any case, the quick answer is that you should be able to find your core file in /var/cache/abrt, where abrt stores it after being invoked. Similarly, other systems using Apport may squirrel away cores in /var/crash, and so on.

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