core dumps Post: 302318336

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1. UNIX for Advanced & Expert Users

reading core dumps

Does anyone know how to read core dumps. Is gdb the only tool for it ? The OS is Solaris. Thanks

2. Solaris

I have the following set up on a Sun server running solaris 5.8 for core dump generation coreadm global core file pattern: /var/core init core file pattern: /var/core global core dumps: enabled per-process core dumps: enabled global setid core dumps:...

3. Programming

strcmp core dumps

hi everyone, Right now when I do: strcmp(s1, s2); i get a core dump because at times s1 or s2 can be nothing so that makes strcmp() core dump. What is the solution, if at times I expect one of them (or both) to be NULL? I want to be able to compare that s1 is NULL and s2 is "blah" or...

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Anyone know how you go about interrogating a panic / core dump with crash for SCO Unix

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Hi, Can we modify the GDB source code so as to analyze core dumps from different targets? From my analysis, I think we need to build our section table statically for each target. i.e., including the various address boundaries in build_section_table() function. If this is the case, then the GDB...

6. Programming

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My program is not dumping core when hitting a segmentation violation inside a thread. However, it dumps core when the segv occurs within main. Any ideas on how to diagnose this? AIX 5.3

7. Ubuntu

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: tsurko@bastila:~$ ulimit -c unlimited tsurko@bastila:~$ ulimit -c unlimited tsurko@bastila:~$ cat /etc/sysctl.conf | grep 'core_pattern'...

8. Red Hat

generating core dumps

Hi I have a Fedora installed and I try to generate my application's core dump file. My system has no coredump limit: $ ulimit core file size (blocks, -c) unlimited But when my application crashes no core dumps generated. I can generate dump file using gcore but it is not appropraite...

9. Programming

Stack only core dumps

I'm working on a program in Linux with a group of people scattered around the country. When we have a crash, I like to send a core dump to the appropriate person so that they can understand the problem better. The problem is that our application uses several gigabytes worth of data and these...

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Generate core dumps

kill -SEGV <pid> gives me the core file for that process but also terminates the process. Can I not get the core dump without terminating the process ?

LEARN ABOUT BSD

savecore

SAVECORE(8)						      System Manager's Manual						       SAVECORE(8)

NAME

       savecore - save a core dump of the operating system

SYNOPSIS

       savecore dirname [ system ]

DESCRIPTION

       Savecore  is  meant to be called at the end of the /etc/rc file.  Its function is to save the core dump of the system (if one was made) and
       to write a reboot message in the shutdown log.

       It saves the core image in the file dirname/core.n and its corresponding namelist in dirname/unix.n.  The second argument is  the  namelist
       for the system which made the core image; the current system is always assumed to be /unix.  The trailing ".n" in the pathnames is replaced
       by a number which grows every time savecore is run in that directory.

       Before savecore writes out a core image, it reads a number from the file dirname/minfree.  If there are fewer free blocks on the file  sys-
       tem  which contains dirname than the number obtained from the minfree file, the core dump is not done.  If the minfree file does not exist,
       savecore always writes out the core file (assuming that a core dump was taken).

       Savecore also writes a reboot message in the shut down log.  If the system crashed as a result of  a  panic,  savecore  records	the  panic
       string in the shut down log too.

       If  savecore detects that the system time is wrong because of a crash (the time in the core image is after the current time), it will reset
       the system time to its best estimate of the time, which is the time in the core image plus the elapsed time since the reboot.  It announces
       the time that it set when this occurs.

FILES

       /usr/adm/shutdownlogshutdown log
       /unix		   current UNIX

BUGS

       The method used to determine whether a dump is present, and to prevent the same core image from being saved multiple times, is not elegant.
       This information should be passed to init by the system; however, this is difficult because the system may have to  be  rebooted  a  second
       time if the root filesystem is patched.

3rd Berkeley Distribution													       SAVECORE(8)

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

reading core dumps

Discussion started by: suntan

2. Solaris

Generating core dumps

Discussion started by: handak9

3. Programming

strcmp core dumps

Discussion started by: annie

4. SCO

SCO 5.07 Panic / Core Dumps

Discussion started by: ccarcher