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Re: [Help-smalltalk] Bus error while building GST 3.2 on SPARC Linux

From: Gabriel Cuvillier
Subject: Re: [Help-smalltalk] Bus error while building GST 3.2 on SPARC Linux
Date: Mon, 19 Jul 2010 20:58:23 +0200
User-agent: Thunderbird (X11/20100411)


Here are the results of the backtrace:

Program received signal SIGBUS, Bus error.
[Switching to Thread 16384 (LWP 2541)]
_gst_mem_alloc (h=0x38fd8, sz=184) at alloc.c:222
222           blk-> = mem->next;
(gdb) bt
#0  _gst_mem_alloc (h=0x38fd8, sz=184) at alloc.c:222
#1  0x20061054 in _gst_tenure_oop (oop=0x203bb888) at oop.c:736
#2  0x20062aac in tenure_one_object () at oop.c:1619
#3 0x20062a1c in queue_put (q=0x20113b38, src=0x244352c0, n=7) at oop.c:1548
#4  0x200634f0 in _gst_copy_an_oop (oop=0x203d7d80) at oop.c:2066
#5  0x20063124 in scan_grey_pages () at oop.c:1844
#6  0x20062e60 in copy_oops () at oop.c:1752
#7  0x200620cc in _gst_scavenge () at oop.c:1226
#8  0x200b2390 in activate_new_context (size=17, sendArgs=1) at interp.c:829
#9  0x200a0e04 in _gst_send_message_internal (sendSelector=0x11, sendArgs=1,
   receiver=0x2040f028, method_class=0x83) at interp-bc.inl:306
#10 0x200a9fd4 in _gst_interpret (processOOP=0x2040efd8) at vm.def:713
#11 0x200b48dc in _gst_nvmsg_send (receiver=0x203e7118,
   sendSelector=0x203acf00, args=0x3f04f304, sendArgs=2) at interp.c:2271
#12 0x2008328c in _gst_va_msg_sendf (resultPtr=0x3f04f51c,
fmt=0x200d9580 "%s %o value: %o value: %o", ap=0x3f04f510) at callin.c:304
#13 0x20083b3c in _gst_msg_sendf (resultPtr=0x3f04f51c,
   fmt=0x200d9580 "%s %o value: %o value: %o") at callin.c:379
#14 0x200551a8 in install_method (methodOOP=0x2040efc8) at comp.c:2637
#15 0x2005127c in _gst_compile_method (method=0x293190, returnLast=false,
   install=true) at comp.c:922
#16 0x20041540 in parse_method (p=0x3f04f8e8, at_end=93) at gst-parse.c:1131
#17 0x2003fd24 in parse_class_definition (p=0x3f04f8e8, classOOP=0x2040e170,

Some kind of memory overwrite somewhere? Maybe this will help..

For info, I am using a legacy system with a low-end SPARC processor and only 256Mb memory. I just wanted to test if a small GST/Seaside website would work reasonably well on such system with limited resources.

Since Autotools on that system are quite old, I am not able to generate the makefiles with the latest git version. So, I will
test the 3.2.1 when it will be released.


Paolo Bonzini a écrit :

On 07/16/2010 08:46 PM, Gabriel Cuvillier wrote:


I have an error while building GST 3.2 on SPARC Linux

Here are the last log lines:

make[2]: Entering directory `/root/smalltalk-3.2'
./gst --no-user-files --kernel-dir "./kernel" --image -iQ /dev/null
make[2]: *** [] Bus error
make[2]: Leaving directory `/root/smalltalk-3.2'

So, the problem seems happens while compiling the initial smalltalk image.

I have searched through the mailing list archive about that kind of "Bus
error", and it seems that
they are triggered by faultly bytecode generation.

Is this a known issue with SPARC architecture? If so, is there a
work-around (such as deactivating some optimisations
of the compiler, or maybe the JIT entirely)?

The JIT is not active by default.  A backtrace can help, you can try

  ./libtool --mode=execute gdb --args ./gst <rest of command line above>
  handle SIGSEGV noprint

Also, can you try the latest git instead of 3.2? I plan to release 3.2.1 in a few days. I honestly don't believe it will improve the situation, but just to be sure.


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