[syslog-ng] [Bug 17] New: segfault in msg_send_internal_message

[bugzilla at bugzilla.balabit.com]

https://bugzilla.balabit.com/show_bug.cgi?id=17

           Summary: segfault in msg_send_internal_message
           Product: syslog-ng
           Version: 2.0.x
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: unspecified
         Component: syslog-ng
        AssignedTo: bazsi at balabit.hu
        ReportedBy: anders.henke at 1und1.de
Type of the Report: bug
   Estimated Hours: 0.0


On my central log server, syslog-ng 2.0.7 randomly segfaults (signal 11); I haven't noticed this earlier 
(as syslog-ng is respawned from init), but according to 19 core dumps, it's always at the same position:

# core.syslog-ng.sig11.16453
GNU gdb 6.4.90-debian
Copyright (C) 2006 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu"...Using host libthread_db library "/lib/libthread_db.so.1".

Reading symbols from /lib/libnsl.so.1...done.
Loaded symbols for /lib/libnsl.so.1
Reading symbols from /lib/librt.so.1...done.
Loaded symbols for /lib/librt.so.1
Reading symbols from /lib/libc.so.6...done.
Loaded symbols for /lib/libc.so.6
Reading symbols from /lib/libpthread.so.0...done.
Loaded symbols for /lib/libpthread.so.0
Reading symbols from /lib/ld-linux-x86-64.so.2...done.
Loaded symbols for /lib64/ld-linux-x86-64.so.2
Reading symbols from /lib/libnss_compat.so.2...done.
Loaded symbols for /lib/libnss_compat.so.2
Reading symbols from /lib/libnss_nis.so.2...done.
Loaded symbols for /lib/libnss_nis.so.2
Reading symbols from /lib/libnss_files.so.2...done.
Loaded symbols for /lib/libnss_files.so.2
Failed to read a valid object file image from memory.
Core was generated by `/sbin/syslog-ng -f /var/run/syslog-ng.conf.519 -F -p /var/run/syslog-ng.pid.519'.
Program terminated with signal 11, Segmentation fault.
#0  0x00000000004051d7 in msg_send_internal_message (prio=43, msg=0x0)
    at messages.c:59
59                m = log_msg_new(buf, strlen(buf), NULL, LP_INTERNAL | LP_LOCAL, NULL);
(gdb) 

I'm running Debian Linux 4.0 (Etch) in 64-Bit-flavour. Syslog-NG 2.0.7 has been compiled using the supplied debian/rules file,
except two changes: don't strip the symbol table from the binary and use --enable-debug.


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