enabling core dumps for daemon processes Post: 302362127

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Operating Systems Linux Ubuntu enabling core dumps for daemon processes Post 302362127 by tsurko on Thursday 15th of October 2009 04:30:29 AM

10-15-2009

Registered User

enabling core dumps for daemon processes

Hello,
I am debugging a program which works as daemon. It sigfaults, unfortunately I'm unable to generate core dump file. Here is what I am doing:

Code:

tsurko@bastila:~$ ulimit -c unlimited
tsurko@bastila:~$ ulimit -c
unlimited
tsurko@bastila:~$ cat /etc/sysctl.conf | grep 'core_pattern'
kernel.core_pattern = "/var/log/dumps/core.%e.%p"
tsurko@bastila:~$ ls -l /var/log | grep dumps
drwxrwxrwt 2 root      root    4096 2009-10-04 12:34 coredumps
drwxrwxrwx 2 root      root    4096 2009-10-15 02:22 dumps

I'm compiling the application with -g to generate debug symbols but finally when it sigfaults no coredump file is generated neither in the directory specified above, nor in the directory where the bin is located. I've also checked in / (it is the working direcotry of the daemon process - no good).
What I am missing?

tsurko

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LEARN ABOUT CENTOS

abrt-action-generate-core-backtrace

ABRT-ACTION-GENERA(1)						    ABRT Manual 					     ABRT-ACTION-GENERA(1)

NAME

       abrt-action-generate-core-backtrace - Generates coredump-level backtrace

SYNOPSIS

       abrt-action-generate-core-backtrace [-v] [-r] [-d DIR]

DESCRIPTION

       This tool uses coredump from the file coredump and binary at the path stored in file executable in the problem directory to generate
       coredump-level backtrace.

       Coredump-level backtrace resembles ordinary backtrace in that it contains information about call frames present on the stack at the time of
       the crash. However, it only contains information that can be obtained from the coredump without debugging symbols available - mainly
       relative addresses of the stored instruction pointers. Such backtrace can still be useful for reporting and reproducing the bug and does
       not require debugging information files to be installed.

       The result is saved in the problem directory in a file named core_backtrace.

   Integration with libreport events
       abrt-action-generate-core-backtrace can be used as an analyzer for application crashes which dump core.

       Example usage in report_event.conf:

	   EVENT=analyze analyzer=CCpp
		   abrt-action-generate-core-backtrace

OPTIONS

       -d DIR
	   Path to problem directory.

       -r
	   Do not hash function fingerprints. Useful for debugging.

       -v
	   Be more verbose. Can be given multiple times.

AUTHORS

       o   ABRT team

abrt 2.1.11							    06/18/2014						     ABRT-ACTION-GENERA(1)

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