08-23-2011
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
help, what is the difference between core dump and panic dump? (1 Reply)
Discussion started by: aileen
1 Replies
2. UNIX for Dummies Questions & Answers
I've got a core dump in my weblogic home directory, which i have tried to debug by initiating savecore from /etc/init.d/savecore start
but savecore failed to create the two files, that is vmcore.n and vmunix.n.
savecore is enable on my server to save vmcore and vmunix in /var/crash/hostname
1)... (4 Replies)
Discussion started by: hassan2
4 Replies
3. UNIX for Dummies Questions & Answers
Hi All,
is there any way to find out the optimal/would be size of the cor dump file generated by the system while a process got terminated abnormally?
Basically we have been asked to provide the size of the core dump file being generated by the administrators who maintained the UNIX boxes.... (4 Replies)
Discussion started by: pushp.gahlot
4 Replies
4. Programming
by what name does a core dump file stored???
like i wrote a test code:
//dump.c
main()
{
char *p=NULL;
printf("%s",p);
}
of course the above code will produce a segmentation fault. but i cant see any file named core in my CWD. am using SUN0S 5.9 (6 Replies)
Discussion started by: vikashtulsiyan
6 Replies
5. Programming
Hi All,
May be it is a stupid question, but, I would like to know what is the advantage using a core dump file at the moment of debugging using gdb.
I know a core dump has information about the state of the application when it crashed, but, what is the difference between debugging using the... (2 Replies)
Discussion started by: lagigliaivan
2 Replies
6. Shell Programming and Scripting
Segmentation fault(core dumped)
but I cant find core file any where. how to make it out?
I try the command:ulimit -c unlimited, I even added it to the .bashrc file.And I removed ulimit setting in /etc/init.d/function. And there's no ulimit setting in /etc/profile. And I tried sudo find /... (8 Replies)
Discussion started by: vistastar
8 Replies
7. Linux
How do i get pointer to thread's local storage or thread specific data while analyzing core dump for linux ?
i use pthread_setspecific to store some data in the pthread's local stoare.
my multi threaded program on linux crashed, and i want to see what is stored in current running thread's... (2 Replies)
Discussion started by: vishwasungal
2 Replies
8. Solaris
I am new to UNIX.
My Application is using c (.so files) and Java code.
My application crashes and CORE DUMP file is generated ,which is huge.
Now I want to view the CORE DUMP file to debug the application using dbx without starting process again.
By only using the CORE DUMP file and dbx ,can i... (1 Reply)
Discussion started by: satde
1 Replies
9. UNIX for Dummies Questions & Answers
Can any body provide me some good link to learn to create and analyze linux user mode application / kernel module core dumps? (1 Reply)
Discussion started by: rupeshkp728
1 Replies
10. Red Hat
Hello All,
I am new joiner of this forum.I am new to Linux shell scripting.
At present I have identified 1 application which stalls very frequently (PID is say xyz) and I am not having much information in its application log to identify the root cause of stalling. I need to take the core dump... (19 Replies)
Discussion started by: Anjan Ganguly
19 Replies
KGDB(1) BSD General Commands Manual KGDB(1)
NAME
kgdb -- kernel debugger
SYNOPSIS
kgdb [-a | -f | -fullname] [-b rate] [-q | -quiet] [-v] [-w] [-d crashdir] [-c core | -n dumpnr | -r device] [kernel [core]]
DESCRIPTION
The kgdb utility is a debugger based on gdb(1) that allows debugging of kernel core files.
The options are as follows:
-a Increase the annotation level. An annotation level of 1 features the historical -fullname option of gdb(1). This is useful
when running kgdb in Emacs. The -f or -fullname options are supported for backward compatibility as well.
-b rate Set the baudrate to rate.
-q Suppress printing of the banner when the debugger starts. The -quiet form is supported for compatibility as well.
-v Increase verbosity.
-w Opens kmem-based targets in read-write mode. (This is identical to what --wcore used to do in previous gdb versions for
FreeBSD.)
-d crashdir Use crashdir instead of the default, /var/crash to locate kernel core dump files in. The name vmcore. plus the dump number will
be appended to determine the actual dump file name.
-c core Explicitly use core as the core dump file.
-n dumpnr Use the kernel core dump file numbered dumpnr for debugging.
-r device Use device to connect kgdb to for a remote debugging session.
The -c, -n, and -r options are mutually exclusive.
Optionally, the name of the kernel symbol file and the name of the core dump file can be supplied on the command-line as positional argu-
ments. If no kernel symbol file name has been given, the symbol file of the currently running kernel will be used. If no core dump file has
been specified through either of the options or the last command-line argument, /dev/mem will be opened to allow debugging the currently run-
ning kernel.
FILES
/dev/mem Default memory image to open if no core dump file has been specified.
/var/crash Default directory to locate kernel core dump files.
SEE ALSO
gdb(1)
HISTORY
The kgdb utility first appeared in its current form in FreeBSD 5.3.
BSD
October 11, 2006 BSD