Custom Query (1030 matches)

The trunk version of Clozure CL kernel crashes on Ubuntu 10.04 (​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 ​Linux kernel 2.6.32-23.37, it works fine.

On Win32 (Windows XP SP3), it seems CCL r14647 and later cause exceptions at the time of a disconnection.

This is the quote from *inferior-lisp* buffer:

%eax = 0x00000001
%ecx = 0x77bdc2e3
%edx = 0x00570608
%ebx = 0x012bb2b8
%esp = 0x015af510
%ebp = 0x015af528
%esi = 0x7ffaee88
%edi = 0x012bd320
%eip = 0x00026612
%eflags = 0x00010246

%cs = 0x001b
%ds = 0x0023
%ss = 0x0023
%es = 0x0023
%fs = 0x003b
%gs = 0x0000
Exception on foreign stack

%eax = 0x012b8998
%ecx = 0x015aee98
%edx = 0x00000001
%ebx = 0x7ffaee88
%esp = 0x015aeed0
%ebp = 0x015aeee8
%esi = 0x7ffdce88
%edi = 0x00000000
%eip = 0x00027255
%eflags = 0x00010287

%cs = 0x001b
%ds = 0x0023
%ss = 0x0023
%es = 0x0023
%fs = 0x003b
%gs = 0x0000
Exception on foreign stack

...

Can I ignore it?

Just tried this ​https://bugs.launchpad.net/sbcl/+bug/492851 in CCL and got the same result after a while.

Here is the code:

(defgeneric blah (x))

(defun test ()
  (let ((object (make-list 10000)))
    (defmethod blah ((x (eql object)))
      (format t "~A~%" x))
    (remove-method #'blah (first (generic-function-methods #'blah))))
  (values))

Then do:

(loop (test))

..and memory use keeps rising.