core dump analysis : __kernel

core dump analysis : __kernel_vsyscall ()

9 More Discussions You Might Find Interesting

1. AIX

AIX system dump analysis

dear all, i have p770 aix6.1 last week, the host reboot suddenly with dump. but i don't know how to analyze the dump. I posted kdb details in the attachment. please anybody help me. #>kdb vmcore.0 /unix vmcore.0 mapped from @ 700000000000000 to @ 7000001c72c0908 START ...

2. UNIX for Dummies Questions & Answers

Learn Linux Core Dump Analysis

Can any body provide me some good link to learn to create and analyze linux user mode application / kernel module core dumps?

3. Solaris

Core file analysis

How can we analyze a core file and determine why it was generated on a solaris system? I know file core filename will tell us what program generated the file. But, what to do next to get more details? Thanks,

4. AIX

How to do core dump analysis in AIX?

Please tell me some methods to analyse core dump in AIX.:)

5. UNIX for Advanced & Expert Users

Core Dump Analysis Using PStack and PMAP

Hello, I'm new to the group and this is my first post. I'm hoping someone can help me out. I have a core dump that I need to analyze from a Unix box and I've never done this sort of thing before. I was told to run a pmap and pstack on the core file which provided two different output files. ...

6. UNIX for Advanced & Expert Users

any tool for core analysis on HP-UX?

Hi, I just wanted to know is there any tool avaliable for core analysis on hp-ux. I have heard about q4 utility. But I think it is used for analysis of system crash dump and not for core dump produced by a user process. gdb doesn't give much information unless the binary is debug-build. ...

7. UNIX for Advanced & Expert Users

How to do core dump analysis

Hi All, I am new to unix environment. Please tell me how to do coredump analysis. Please explain clearly with example. What are the details are available in the core. Thanks in advance

8. UNIX for Dummies Questions & Answers

core file analysis

Hi folks, I'm hoping someone would be charitable enough to give me a quick explanation of adb usage for analyzing core files...or point me in the right direction. A search here revealed scant results and web searches are providing me with ambiguous information. Running Solaris. Thanks,...

9. UNIX for Dummies Questions & Answers

help, what is the difference between core dump and panic dump?

LEARN ABOUT FREEBSD

kgdb

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

Red Hat