[Sbcl-help] Large Executable Cores Crashing on Startup - Sometimes

[Burton S. <bur...@gm...>]

Hello,

I am working on saving test data to an executable core file using sbcl 
and it's working some of the time.  The saving goes fine, but when I try 
to run the resulting core file I get a crash.  Here is a log of a bit of 
a gdb session with a crashing core and my sbcl version is git HEAD. I'll 
add that the cores are large (> 1GB) and I am forking before I do save:

.  Any idea why this might be happening?

[ ~/petri-dish ] ./test.core
internal error #30 (division by zero)
     SC: 20, Offset: 0             0xae24f28dd5af5c4: pad1: 
196069080511724913
     SC: 20, Offset: 6             0x00000000: even fixnum: 0
fatal error encountered in SBCL pid 17511(tid 140737353946912):
internal error too early in init, can't recover


Welcome to LDB, a low-level debugger for the Lisp runtime environment.
ldb> quit
Really quit? [y] y
[ ~/petri-dish ] gdb test.core
GNU gdb (Ubuntu/Linaro 7.3-0ubuntu2) 7.3-2011.08
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later 
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
<http://bugs.launchpad.net/gdb-linaro/>...
Reading symbols from /home/burton/petri-dish/test.core...done.
(gdb) r
Starting program: /home/burton/petri-dish/test.core
[Thread debugging using libthread_db enabled]

Program received signal SIGUSR1, User defined signal 1.
0x00007ffff73cc687 in kill () from /lib/x86_64-linux-gnu/libc.so.6
(gdb) up
#1  0x0000000000411516 in see_if_sigaction_nodefer_works () at 
interrupt.c:1691
1691        kill(getpid(), SA_NODEFER_TEST_KILL_SIGNAL);
(gdb) up
#2  0x0000000000414460 in interrupt_init () at interrupt.c:1828
1828        see_if_sigaction_nodefer_works();
(gdb) down
#1  0x0000000000411516 in see_if_sigaction_nodefer_works () at 
interrupt.c:1691
1691        kill(getpid(), SA_NODEFER_TEST_KILL_SIGNAL);
(gdb) list
1686        {
1687            sigset_t empty;
1688            sigemptyset(&empty);
1689            thread_sigmask(SIG_SETMASK, &empty, 0);
1690        }
1691        kill(getpid(), SA_NODEFER_TEST_KILL_SIGNAL);
1692        while (sigaction_nodefer_works == -1);
1693        sigaction(SA_NODEFER_TEST_KILL_SIGNAL, &old_sa, NULL);
1694    }
1695
(gdb) bt
#0  0x00007ffff73cc687 in kill () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x0000000000411516 in see_if_sigaction_nodefer_works () at 
interrupt.c:1691
#2  0x0000000000414460 in interrupt_init () at interrupt.c:1828
#3  0x000000000040a99d in main (argc=1, argv=0x7fffffffea48, 
envp=0x7fffffffea58) at runtime.c:367
(gdb) quit
A debugging session is active.

         Inferior 1 [process 17514] will be killed.
[ ~/petri-dish ] sbcl --version
SBCL 1.0.57.55-80ad081-dirty
[ ~/petri-dish ]

--
Burton Samograd