07-31-2007
examine core file after abort()
I'm running Red Hat Linux 2.6.7 on a x86_64 box.
I have a core file from a program that called abort(). Does anyone here know how can I get a backtrace? (Re-creating the error with svd running inside gdb has proved impossible).
% gdb svd core.25223
GNU gdb Red Hat Linux (6.0post-0.20040223.19rh)
...
Core was generated by `svd'.
Program terminated with signal 6, Aborted.
...
#0 0x0000003db9b2dc05 in raise () from /lib64/tls/libc.so.6
(gdb) bt
#0 0x0000003db9b2dc05 in raise () from /lib64/tls/libc.so.6
Cannot access memory at address 0x7fbfffe038
(gdb)
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GCORE(1) GNU Development Tools GCORE(1)
NAME
gcore - Generate a core file of a running program
SYNOPSIS
gcore [-o filename] pid
DESCRIPTION
Generate a core dump of a running program with process ID pid. Produced file is equivalent to a kernel produced core file as if the
process crashed (and if "ulimit -c" were used to set up an appropriate core dump limit). Unlike after a crash, after gcore the program
remains running without any change.
OPTIONS
-o filename
The optional argument filename specifies the file name where to put the core dump. If not specified, the file name defaults to
core.pid, where pid is the running program process ID.
SEE ALSO
The full documentation for GDB is maintained as a Texinfo manual. If the "info" and "gdb" programs and GDB's Texinfo documentation are
properly installed at your site, the command
info gdb
should give you access to the complete manual.
Using GDB: A Guide to the GNU Source-Level Debugger, Richard M. Stallman and Roland H. Pesch, July 1991.
COPYRIGHT
Copyright (c) 1988-2013 Free Software Foundation, Inc.
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or
any later version published by the Free Software Foundation; with the Invariant Sections being "Free Software" and "Free Software Needs
Free Documentation", with the Front-Cover Texts being "A GNU Manual," and with the Back-Cover Texts as in (a) below.
(a) The FSF's Back-Cover Text is: "You are free to copy and modify this GNU Manual. Buying copies from GNU Press supports the FSF in
developing GNU and promoting software freedom."
gdb-Red Hat Enterprise Linux 7.6.1-51.el7 2014-06-10 GCORE(1)