unpredictable emacs 21 crashes

[Rob Reid]

Hi,

Since upgrading to emacs 21 a few months ago it hasn't stayed up for more than
a day or two on average.  I've been watching for a pattern without seeing any,
and I'm not sure but I think sometimes it even crashes in the middle of the
night when I'm not there.

TIA for any help.

168 ~% file core
core: ELF 32-bit LSB core file of 'emacs' (signal 11), Intel 80386, version 1
169 ~% gdb /usr/bin/emacs core
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This GDB was configured as "i386-redhat-linux"...
Core was generated by `emacs -geometry 81x42'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /usr/X11R6/lib/libXaw3d.so.7...done.
Loaded symbols for /usr/X11R6/lib/libXaw3d.so.7
Reading symbols from /usr/X11R6/lib/libXmu.so.6...done.
Loaded symbols for /usr/X11R6/lib/libXmu.so.6
Reading symbols from /usr/X11R6/lib/libXt.so.6...done.
Loaded symbols for /usr/X11R6/lib/libXt.so.6
Reading symbols from /usr/X11R6/lib/libSM.so.6...done.
Loaded symbols for /usr/X11R6/lib/libSM.so.6
Reading symbols from /usr/X11R6/lib/libICE.so.6...done.
Loaded symbols for /usr/X11R6/lib/libICE.so.6
Reading symbols from /usr/X11R6/lib/libXext.so.6...done.
Loaded symbols for /usr/X11R6/lib/libXext.so.6
Reading symbols from /usr/lib/libtiff.so.3...done.
Loaded symbols for /usr/lib/libtiff.so.3
Reading symbols from /usr/lib/libjpeg.so.62...done.
Loaded symbols for /usr/lib/libjpeg.so.62
Reading symbols from /usr/lib/libpng.so.2...done.
Loaded symbols for /usr/lib/libpng.so.2
Reading symbols from /usr/lib/libz.so.1...done.
Loaded symbols for /usr/lib/libz.so.1
Reading symbols from /lib/libm.so.6...done.
Loaded symbols for /lib/libm.so.6
Reading symbols from /usr/lib/libungif.so.4...done.
Loaded symbols for /usr/lib/libungif.so.4
Reading symbols from /usr/X11R6/lib/libXpm.so.4...done.
Loaded symbols for /usr/X11R6/lib/libXpm.so.4
Reading symbols from /usr/X11R6/lib/libX11.so.6...done.
Loaded symbols for /usr/X11R6/lib/libX11.so.6
Reading symbols from /usr/lib/libncurses.so.5...done.
Loaded symbols for /usr/lib/libncurses.so.5
Reading symbols from /lib/libc.so.6...done.
Loaded symbols for /lib/libc.so.6
Reading symbols from /lib/ld-linux.so.2...done.
Loaded symbols for /lib/ld-linux.so.2
Reading symbols from /lib/libnss_files.so.2...done.
Loaded symbols for /lib/libnss_files.so.2
#0  0x403248d1 in __kill () from /lib/libc.so.6
(gdb) up
#1  0x80d6044 in fatal_error_signal ()
(gdb) up
#2  <signal handler called>
(gdb) up
#3  0x811d476 in mark_object ()
(gdb) up
#4  0x811d8ea in mark_object ()
(gdb) up
#5  0x811d932 in mark_object ()
(gdb) up
#6  0x811d8ea in mark_object ()
(gdb) 

(It kept returning to 0x811d8ea in mark_object () until I lost patience.)

173 ~% rpm -qf /usr/bin/emacs
emacs-21.1-0.2.9

(On Red Hat 7ish GNU/Linux.)