Hi,
I am trying to analyze one core file on my RHEL 6.5, but I am getting below error related to the core file. So I am not getting any stack trace about the crash.
# gdb MyDebugBin /var/core/MyDebugBin.27005
GNU gdb (GDB) Red Hat Enterprise Linux (7.2-60.el6_4.1)
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from MyDebugBin...done.
BFD: Warning: MyDebugBin.27005 is truncated: expected core file size >= 47775744, found: 2387968.
[New Thread 27005]
Cannot access memory at address 0x4baca8e8
Cannot access memory at address 0x4baca8e8
Cannot access memory at address 0x4baca8e8
Reading symbols from /lib/ld-linux.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib/ld-linux.so.2
Failed to read a valid object file image from memory.
Core was generated by `/path_to_my_debug_bin/MyDebugBin :12 -auth /var/run/gdm/auth-for-gdm-kUgSIC/database'.
Program terminated with signal 11, Segmentation fault.
#0 0x4bb48506 in ?? ()
Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.132.el6.i686
(gdb) bt
#0 0x4bb48506 in ?? ()
Cannot access memory at address 0xffe51198
(gdb) quit
Why gdb is complaining about the core size? There is enough space left for core files with ulimit unlimited set for core file.
How to fix this kind of error or problem related to gdb? Is it a known bug in gdb on higher version of linux kernel?
thanks,