[Pkg-octave-devel] octave-3.0.0 crashes at startup on ARM

Sun Jan 27 18:21:10 CST 2008

* John W. Eaton <jwe at bevo.che.wisc.edu> [2008-01-10 09:53]:

> The last bits of this execution path are apparently
> 
>   octave_shlib (void) : relative (false), rep (make_shlib ()) { }
> 
> (line 52 in oct-shlib.h) which is calling make_shlib from
> oct-shlib.cc:
> 
>   octave_shlib *
>   octave_shlib::make_shlib (void)
>   {
>   #if defined (HAVE_DLOPEN_API)
>     return new octave_dlopen_shlib ();
>   #elif defined (HAVE_SHL_LOAD_API)
>     return new octave_shl_load_shlib ();
>   #elif defined (HAVE_LOADLIBRARY_API)
>     return new octave_w32_shlib ();
>   #elif defined (HAVE_DYLD_API)
>     return new octave_dyld_shlib ();
>   #else
>     return new octave_base_shlib ();
>   #endif
>   }
> 
> >From the info above, it's not clear precisely which line is causing
> the crash, but according to the build log linked here:
> 
> | Build logs of crashing build can be found at
> | http://buildd.debian.org/fetch.cgi?pkg=octave3.0;ver=3.0.0-1;arch=arm;stamp=1199146040
> 
> it seems that HAVE_DLOPEN_API is defined, so it should be executing
> 
>   return new octave_dlopen_shlib ()
> 
> [snip]

Thomas and I are running an ARM emulation under qemu and we could not get
that far using gdb.  The gdb log is attached below.  I set a breakpoint at
octave_dynamic_loader::do_load_oct and then step until the line 324 of
dynamic-ld.cc ("octave_shlib oct_file;").  I then use stepi to try to catch
where the segmentation fault occurs but I cannot even enter
octave_shlib::make_shlib().

Would you have any ideas on how to pursue this?

-- 
Rafael
-------------- next part --------------
$ ./run-octave -g
GNU gdb 6.7.1-debian
Copyright (C) 2007 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 "arm-linux-gnu"...
Using host libthread_db library "/lib/libthread_db.so.1".
(gdb) run
Starting program: [...]
[Thread debugging using libthread_db enabled]
[New Thread 0x40020ef0 (LWP 3657)]
GNU Octave, version 3.0.0
Copyright (C) 2007 John W. Eaton and others.
This is free software; see the source code for copying conditions.
There is ABSOLUTELY NO WARRANTY; not even for MERCHANTIBILITY or
FITNESS FOR A PARTICULAR PURPOSE.  For details, type `warranty'.

Octave was configured for "armv5tejl-unknown-linux-gnu".

Additional information about Octave is available at http://www.octave.org.

Please contribute if you find this software useful.
For more information, visit http://www.octave.org/help-wanted.html

Report bugs to <bug at octave.org> (but first, please read
http://www.octave.org/bugs.html to learn how to write a helpful report).

For information about changes from previous versions, type `news'.

octave:1> [ctrl-z]
Program received signal SIGTSTP, Stopped (user).
[Switching to Thread 0x40020ef0 (LWP 3657)]
0x422c3dd4 in read () from /lib/libc.so.6
(gdb) break octave_dynamic_loader::do_load_oct
Breakpoint 1 at 0x402b68e4: file dynamic-ld.cc, line 322.
(gdb) c
Continuing.

Program received signal SIGTSTP, Stopped (user).
0x4223a81c in sigprocmask () from /lib/libc.so.6
(gdb) c
Continuing.

octave:1> det(1)

Breakpoint 1, octave_dynamic_loader::do_load_oct (this=0xf59338,
    fcn_name=@0xbe96e018, file_name=@0xbe96e014, relative=false)
    at dynamic-ld.cc:322
322       bool retval = false;
Current language:  auto; currently c++
(gdb) s
324       octave_shlib oct_file;
(gdb) s
octave_shlib (this=0xbe96dea0) at ../liboctave/oct-shlib.h:52
52        octave_shlib (void) : relative (false), rep (make_shlib ()) { }
(gdb) stepi
0x402b7e9c      52        octave_shlib (void) : relative (false), rep (make_shlib ()) { }
(gdb) stepi
0x402b7ea0      52        octave_shlib (void) : relative (false), rep (make_shlib ()) { }
(gdb) stepi
0x402b7ea4      52        octave_shlib (void) : relative (false), rep (make_shlib ()) { }
(gdb) stepi
0x402b7ea8      52        octave_shlib (void) : relative (false), rep (make_shlib ()) { }
(gdb) stepi
0x402b7eac      52        octave_shlib (void) : relative (false), rep (make_shlib ()) { }
(gdb) stepi
0x402b7eb0      52        octave_shlib (void) : relative (false), rep (make_shlib ()) { }
(gdb) stepi
0x402b7eb4      52        octave_shlib (void) : relative (false), rep (make_shlib ()) { }
(gdb) stepi
0x402b7eb8      52        octave_shlib (void) : relative (false), rep (make_shlib ()) { }
(gdb) stepi
0x401f5510 in ?? ()
   from /usr/local/src/octave/mit-debug-ohne-optimierung/octave-3.0.0/src/liboctinterp.so
(gdb) stepi
0x401f5514 in ?? ()
   from /usr/local/src/octave/mit-debug-ohne-optimierung/octave-3.0.0/src/liboctinterp.so
(gdb) stepi
0x401f5518 in ?? ()
   from /usr/local/src/octave/mit-debug-ohne-optimierung/octave-3.0.0/src/liboctinterp.so
(gdb) stepi
octave_shlib::make_shlib () at oct-shlib.cc:681
681     octave_shlib::make_shlib (void)
(gdb) stepi
0x40f65870      681     octave_shlib::make_shlib (void)
(gdb) stepi
0x40f65874      681     octave_shlib::make_shlib (void)
(gdb) stepi
0x40f65878      681     octave_shlib::make_shlib (void)
(gdb) stepi
0x40f6587c      681     octave_shlib::make_shlib (void)
(gdb) stepi
0x40f65880      681     octave_shlib::make_shlib (void)
(gdb) stepi
0x40f65884      681     octave_shlib::make_shlib (void)
(gdb) stepi
0x40f65888      681     octave_shlib::make_shlib (void)
(gdb) stepi

Program received signal SIGSEGV, Segmentation fault.
0x40f65888 in octave_shlib::make_shlib () at oct-shlib.cc:681
681     octave_shlib::make_shlib (void)
(gdb) bt
#0  0x40f65888 in octave_shlib::make_shlib () at oct-shlib.cc:681
#1  0x402b7ebc in octave_shlib (this=0xbe96dea0) at ../liboctave/oct-shlib.h:52
#2  0x402b6914 in octave_dynamic_loader::do_load_oct (this=0xf59338,
    fcn_name=@0xbe96e018, file_name=@0xbe96e014, relative=false)
    at dynamic-ld.cc:324
#3  0x402b7118 in octave_dynamic_loader::load_oct (fcn_name=@0xbe96e018,
    file_name=@0xbe96e014, relative=false) at dynamic-ld.cc:508
#4  0x4056eadc in load_fcn_from_file (nm_arg=@0xbe96e110, exec_script=false)
    at parse.y:3440
#5  0x4056f0c8 in load_fcn_from_file (sym_rec=0xf912e0, exec_script=false)
    at parse.y:3480
#6  0x4061c01c in lookup (sym_rec=0xf912e0, exec_script=false)
    at variables.cc:1118
#7  0x4061c230 in is_valid_function (fcn_name=@0xf84584, warn_for=@0xbe96e2e0,
    warn=true) at variables.cc:483
#8  0x42699bf0 in builtin (base=@0xf84584) at ./DLD-FUNCTIONS/dispatch.cc:214
#9  0x4269ae5c in octave_dispatch::do_multi_index_op (this=0xf84558,
    nargout=0, args=@0xf62e30) at ./DLD-FUNCTIONS/dispatch.cc:272
#10 0x4269b210 in octave_dispatch::subsref (this=0xf84558, type=@0xf57fe4,
    idx=@0xbe96e7d4, nargout=0) at ./DLD-FUNCTIONS/dispatch.cc:145
#11 0x406c38b8 in octave_value::subsref (this=0xbe96e7e0, type=@0xf57fe4,
    idx=@0xbe96e7d4, nargout=0) at ov.cc:783
#12 0x408ad260 in tree_index_expression::rvalue (this=0xf57fc0, nargout=0)
    at pt-idx.cc:352
#13 0x408e29f8 in tree_statement::eval (this=0xf62e58, silent=false,
    nargout=0, in_function_body=false) at pt-stmt.cc:133
#14 0x408e2f24 in tree_statement_list::eval (this=0x1492710, silent=false,
    nargout=0) at pt-stmt.cc:190
#15 0x405fd178 in main_loop () at toplev.cc:225
#16 0x40548e90 in octave_main (argc=5, argv=0xbe96ee94, embedded=0)
    at octave.cc:835
#17 0x000086c8 in main (argc=5, argv=0xbe96ee94) at main.c:35