Dear Brice
2014-07-09 21:34 GMT+00:00 Brice Goglin <brice.gog...@inria.fr>:
> Le 09/07/2014 23:30, Nick Papior Andersen a écrit :
>
> Dear Brice
>
> Here are my findings (apologies for not doing make check on before-hand!)
>
> 2014-07-09 20:42 GMT+00:00 Brice Goglin <brice.gog...@inria.fr>:
>
>> Hello,
>>
>> A quick look in Open MPI source code seems to say that it's manipulating
>> XML topologies in these lines.
>>
>> Please go into your hwloc-1.9 build directory, and run "tests/xmlbuffer"
>> (you will may have to build it with run "make xmlbuffer -C tests").
>>
> This errors out with a segmentation fault. I tried recompiling with -g
> -traceback, to no avail, nothing shows up other than:
> using default import and export
> exported to buffer 0x1240c40 length 40817
> Segmentation fault
> which is right before the "re-exported" statement. ulimit is not
> ridiculously low.
>
>
> Can you run it under gdb?
> libtool --mode=execute gdb tests/xmlbuffer
> $ r
> $ bt full
> <send this output>
>
(gdb) r
Starting program:
/home/nick/phd/code/install/.compile/hwloc-1.9/tests/.libs/lt-xmlbuffer
using default import and export
exported to buffer 0x6b6c50 length 40817
Program received signal SIGSEGV, Segmentation fault.
0x00000000004017fb in one_test () at xmlbuffer.c:51
51 if (strcmp(hwloc_obj_get_info_by_name(hwloc_get_root_obj(topology),
"UglyString"), s))
(gdb) bt full
#0 0x00000000004017fb in one_test () at xmlbuffer.c:51
topology = 0x615dc0
size1 = 40817
size2 = 45
buf1 = 0x6b6c50 "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<!DOCTYPE
topology SYSTEM \"hwloc.dtd\">\n<topology>\n <object type=\"Machine\"
os_index=\"0\" cpuset=\"0x00ffffff\" complete_cpuset=\"0x00ffffff\"
online_cpuset=\"0x00fffff"...
buf2 = 0x180 <Address 0x180 out of bounds>
err = 0
s = " \t\n \r", ' ' <repeats 19 times>,
"!\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~
"
t = "x\001\002\003\004\005\006\ay"
#1 0x0000000000401495 in main () at xmlbuffer.c:83
No locals.
>
> Also, can you try setting HWLOC_NO_LIBXML_IMPORT=1 and/or
> HWLOC_NO_LIBXML_EXPORT=1 in the environment to see if the problem comes
> from XML import or export?
>
You mean:
HWLOC_NO_LIBXML_EXPORT=1 ./xmlbuffer
HWLOC_NO_LIBXML_IMPORT=1 ./xmlbuffer
HWLOC_NO_LIBXML_IMPORT=1 HWLOC_NO_LIBXML_EXPORT=1 ./xmlbuffer
It does exactly the same thing, Segmentation fault.
>
> Thanks
> Brice
>
>
--
Kind regards Nick
