id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
731	Lisp kernel terminated with segmentation fault	llibra	gb	"The trunk version of Clozure CL kernel crashes on Ubuntu 10.04 ([https://launchpad.net/ubuntu/+source/linux/2.6.32-24.41 Linux kernel 2.6.32-24.41]).

{{{
% ./lx86cl
zsh: segmentation fault (core dumped)  ./lx86cl
% gdb ./lx86cl core
GNU gdb (GDB) 7.1-ubuntu
Copyright (C) 2010 Free Software Foundation, Inc.
... snip ...
Core was generated by `./lx86cl'.
Program terminated with signal 11, Segmentation fault.
#0  find_foreign_rsp (tcr=0x2ada70, handler=0x80634f0, signum=7, 
    info=0x2acc1c, context=0x2acc9c, return_address=9712656)
    at ../x86-exceptions.c:1549
1549	  if (((BytePtr)rsp < foreign_area->low) ||
(gdb) bt
#0  find_foreign_rsp (tcr=0x2ada70, handler=0x80634f0, signum=7, 
    info=0x2acc1c, context=0x2acc9c, return_address=9712656)
    at ../x86-exceptions.c:1549
#1  handle_signal_on_foreign_stack (tcr=0x2ada70, handler=0x80634f0, signum=7, 
    info=0x2acc1c, context=0x2acc9c, return_address=9712656)
    at ../x86-exceptions.c:1624
#2  0x08061cae in altstack_signal_handler (signum=7, info=0x2acc1c, 
    context=0x2acc9c) at ../x86-exceptions.c:1703
#3  <signal handler called>
#4  create_stack (size=1159168) at ../thread_manager.c:1611
#5  0x080592b2 in allocate_lisp_stack (useable=1048576, softsize=102400, 
    hardsize=4096, softkind=kVSPsoftguard, hardkind=kVSPhardguard, 
    h_p=0x2ad038, base_p=0x2ad03c, softp=0x2ad034, hardp=0x2ad030)
    at ../pmcl-kernel.c:223
#6  0x0805947c in allocate_lisp_stack_area (stack_type=AREA_VSTACK, 
    usable=1048576, softsize=102400, hardsize=4096, softkind=kVSPsoftguard, 
    hardkind=kVSPhardguard) at ../pmcl-kernel.c:279
#7  0x08059565 in allocate_vstack_holding_area_lock (usable=3674112)
    at ../pmcl-kernel.c:326
#8  0x0806529e in new_tcr (vstack_size=1048576, tstack_size=524288)
    at ../thread_manager.c:1342
#9  0x08065bb5 in lisp_thread_entry (param=0xbfcbe390)
    at ../thread_manager.c:1686
#10 0x0057e96e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#11 0x00d9aa4e in clone () from /lib/tls/i686/cmov/libc.so.6
(gdb) 
}}}

On [https://launchpad.net/ubuntu/+source/linux/2.6.32-23.37 Linux kernel 2.6.32-23.37], it works fine.
"	defect	closed	blocker		Runtime (threads, GC)	trunk	fixed