Kawashima-san,
This is interesting :-)
proc is in the stack and has type orte_process_name_t
with
typedef uint32_t orte_jobid_t;
typedef uint32_t orte_vpid_t;
struct orte_process_name_t {
orte_jobid_t jobid; /**< Job number */
orte_vpid_t vpid; /**< Process id - equivalent to rank */
};
typedef struct orte_process_name_t orte_process_name_t;
so there is really no reason to align this on 8 bytes...
but later, proc is casted into an uint64_t ...
so proc should have been aligned on 8 bytes but it is too late,
and hence the glory SIGBUS
this is loosely related to
http://www.open-mpi.org/community/lists/devel/2014/08/15532.php
(see heterogeneous.v2.patch)
if we make opal_process_name_t an union of uint64_t and a struct of two
uint32_t, the compiler
will align this on 8 bytes.
note the patch is not enough (and will not apply on the v1.8 branch anyway),
we could simply remove orte_process_name_t and ompi_process_name_t and
use only
opal_process_name_t (and never declare variables with type
opal_proc_name_t otherwise alignment might be incorrect)
as a workaround, you can declare an opal_process_name_t (for alignment),
and cast it to an orte_process_name_t
i will write a patch (i will not be able to test on sparc ...)
please note this issue might be present in other places
Cheers,
Gilles
On 2014/08/08 13:03, Kawashima, Takahiro wrote:
> Hi,
>
>>>>>> I have installed openmpi-1.8.2rc2 with gcc-4.9.0 on Solaris
>>>>>> 10 Sparc and I receive a bus error, if I run a small program.
> I've finally reproduced the bus error in my SPARC environment.
>
> #0 0xffffffff00db4740 (__waitpid_nocancel + 0x44)
> (0x200,0x0,0x0,0xa0,0xfffff80100064af0,0x35b4)
> #1 0xffffffff0001a310 (handle_signal + 0x574) (signo=10,info=(struct siginfo
> *) 0x000007feffffd100,p=(void *) 0x000007feffffd100) at line 277 in
> ../sigattach.c <SIGNAL HANDLER>
> #2 0xffffffff0282aff4 (store + 0x540) (uid=(unsigned long *)
> 0xffffffff0118a128,scope=8:'\b',key=(char *) 0xffffffff0106a0a8
> "opal.local.ldr",data=(void *) 0x000007feffffde74,type=15:'\017') at line 252
> in db_hash.c
> #3 0xffffffff01266350 (opal_db_base_store + 0xc4) (proc=(unsigned long *)
> 0xffffffff0118a128,scope=8:'\b',key=(char *) 0xffffffff0106a0a8
> "opal.local.ldr",object=(void *) 0x000007feffffde74,type=15:'\017') at line
> 49 in db_base_fns.c
> #4 0xffffffff00fdbab4 (orte_util_decode_pidmap + 0x790) (bo=(struct *)
> 0x0000000000281d70) at line 975 in nidmap.c
> #5 0xffffffff00fd6d20 (orte_util_nidmap_init + 0x3dc) (buffer=(struct
> opal_buffer_t *) 0x0000000000241fc0) at line 141 in nidmap.c
> #6 0xffffffff01e298cc (rte_init + 0x2a0) () at line 153 in ess_env_module.c
> #7 0xffffffff00f9f28c (orte_init + 0x308) (pargc=(int *)
> 0x0000000000000000,pargv=(char ***) 0x0000000000000000,flags=32) at line 148
> in orte_init.c
> #8 0xffffffff001a6f08 (ompi_mpi_init + 0x31c) (argc=1,argv=(char **)
> 0x000007fefffff348,requested=0,provided=(int *) 0x000007feffffe698) at line
> 464 in ompi_mpi_init.c
> #9 0xffffffff001ff79c (MPI_Init + 0x2b0) (argc=(int *)
> 0x000007feffffe814,argv=(char ***) 0x000007feffffe818) at line 84 in init.c
> #10 0x0000000000100ae4 (main + 0x44) (argc=1,argv=(char **)
> 0x000007fefffff348) at line 8 in mpiinitfinalize.c
> #11 0xffffffff00d2b81c (__libc_start_main + 0x194)
> (0x100aa0,0x1,0x7fefffff348,0x100d24,0x100d14,0x0)
> #12 0x000000000010094c (_start + 0x2c) ()
>
> The line 252 in opal/mca/db/hash/db_hash.c is:
>
> case OPAL_UINT64:
> if (NULL == data) {
> OPAL_ERROR_LOG(OPAL_ERR_BAD_PARAM);
> return OPAL_ERR_BAD_PARAM;
> }
> kv->type = OPAL_UINT64;
> kv->data.uint64 = *(uint64_t*)(data); // !!! here !!!
> break;
>
> My environment is:
>
> Open MPI v1.8 branch r32447 (latest)
> configure --enable-debug
> SPARC-V9 (Fujitsu SPARC64 IXfx)
> Linux (custom)
> gcc 4.2.4
>
> I could not reproduce it with Open MPI trunk nor with Fujitsu compiler.
>
> Can this information help?
>
> Takahiro Kawashima,
> MPI development team,
> Fujitsu
>
>> Hi,
>>
>> I'm sorry once more to answer late, but the last two days our mail
>> server was down (hardware error).
>>
>>> Did you configure this --enable-debug?
>> Yes, I used the following command.
>>
>> ../openmpi-1.8.2rc3/configure --prefix=/usr/local/openmpi-1.8.2_64_gcc \
>> --libdir=/usr/local/openmpi-1.8.2_64_gcc/lib64 \
>> --with-jdk-bindir=/usr/local/jdk1.8.0/bin \
>> --with-jdk-headers=/usr/local/jdk1.8.0/include \
>> JAVA_HOME=/usr/local/jdk1.8.0 \
>> LDFLAGS="-m64 -L/usr/local/gcc-4.9.0/lib/amd64" \
>> CC="gcc" CXX="g++" FC="gfortran" \
>> CFLAGS="-m64" CXXFLAGS="-m64" FCFLAGS="-m64" \
>> CPP="cpp" CXXCPP="cpp" \
>> CPPFLAGS="" CXXCPPFLAGS="" \
>> --enable-mpi-cxx \
>> --enable-cxx-exceptions \
>> --enable-mpi-java \
>> --enable-heterogeneous \
>> --enable-mpi-thread-multiple \
>> --with-threads=posix \
>> --with-hwloc=internal \
>> --without-verbs \
>> --with-wrapper-cflags="-std=c11 -m64" \
>> --enable-debug \
>> |& tee log.configure.$SYSTEM_ENV.$MACHINE_ENV.64_gcc
>>
>>
>>
>>> If so, you should get a line number in the backtrace
>> I got them for gdb (see below), but not for "dbx".
>>
>>
>> Kind regards
>>
>> Siegmar
>>
>>
>>
>>>
>>> On Aug 5, 2014, at 2:59 AM, Siegmar Gross
>> <siegmar.gr...@informatik.hs-fulda.de> wrote:
>>>> Hi,
>>>>
>>>> I'm sorry to answer so late, but last week I didn't have Internet
>>>> access. In the meantime I've installed openmpi-1.8.2rc3 and I get
>>>> the same error.
>>>>
>>>>> This looks like the typical type of alignment error that we used
>>>>> to see when testing regularly on SPARC. :-\
>>>>>
>>>>> It looks like the error was happening in mca_db_hash.so. Could
>>>>> you get a stack trace / file+line number where it was failing
>>>>> in mca_db_hash? (i.e., the actual bad code will likely be under
>>>>> opal/mca/db/hash somewhere)
>>>> Unfortunately I don't get a file+line number from a file in
>>>> opal/mca/db/Hash.
>>>>
>>>>
>>>>
>>>> tyr small_prog 102 ompi_info | grep MPI:
>>>> Open MPI: 1.8.2rc3
>>>> tyr small_prog 103 which mpicc
>>>> /usr/local/openmpi-1.8.2_64_gcc/bin/mpicc
>>>> tyr small_prog 104 mpicc init_finalize.c
>>>> tyr small_prog 106 /opt/solstudio12.3/bin/sparcv9/dbx
>> /usr/local/openmpi-1.8.2_64_gcc/bin/mpiexec
>>>> For information about new features see `help changes'
>>>> To remove this message, put `dbxenv suppress_startup_message 7.9' in your
>> .dbxrc
>>>> Reading mpiexec
>>>> Reading ld.so.1
>>>> Reading libopen-rte.so.7.0.4
>>>> Reading libopen-pal.so.6.2.0
>>>> Reading libsendfile.so.1
>>>> Reading libpicl.so.1
>>>> Reading libkstat.so.1
>>>> Reading liblgrp.so.1
>>>> Reading libsocket.so.1
>>>> Reading libnsl.so.1
>>>> Reading libgcc_s.so.1
>>>> Reading librt.so.1
>>>> Reading libm.so.2
>>>> Reading libpthread.so.1
>>>> Reading libc.so.1
>>>> Reading libdoor.so.1
>>>> Reading libaio.so.1
>>>> Reading libmd.so.1
>>>> (dbx) check -all
>>>> access checking - ON
>>>> memuse checking - ON
>>>> (dbx) run -np 1 a.outRunning: mpiexec -np 1 a.out
>>>> (process id 27833)
>>>> Reading rtcapihook.so
>>>> Reading libdl.so.1
>>>> Reading rtcaudit.so
>>>> Reading libmapmalloc.so.1
>>>> Reading libgen.so.1
>>>> Reading libc_psr.so.1
>>>> Reading rtcboot.so
>>>> Reading librtc.so
>>>> Reading libmd_psr.so.1
>>>> RTC: Enabling Error Checking...
>>>> RTC: Running program...
>>>> Write to unallocated (wua) on thread 1:
>>>> Attempting to write 1 byte at address 0xffffffff79f04000
>>>> t@1 (l@1) stopped in _readdir at 0xffffffff55174da0
>>>> 0xffffffff55174da0: _readdir+0x0064: call
>> _PROCEDURE_LINKAGE_TABLE_+0x2380 [PLT] ! 0xffffffff55342a80
>>>> (dbx) where
>>>> current thread: t@1
>>>> =>[1] _readdir(0xffffffff79f00300, 0x2e6800, 0x4, 0x2d, 0x4,
>> 0xffffffff79f00300), at 0xffffffff55174da0
>>>> [2] list_files_by_dir(0x100138fd8, 0xffffffff7fffd1f0,
>>>> 0xffffffff7fffd1e8,
>> 0xffffffff7fffd210, 0x0, 0xffffffff702a0010), at
>>>> 0xffffffff63174594
>>>> [3] foreachfile_callback(0x100138fd8, 0xffffffff7fffd458, 0x0, 0x2e, 0x0,
>> 0xffffffff702a0010), at 0xffffffff6317461c
>>>> [4] foreach_dirinpath(0x1001d8a28, 0x0, 0xffffffff631745e0,
>> 0xffffffff7fffd458, 0x0, 0xffffffff702a0010), at 0xffffffff63171684
>>>> [5] lt_dlforeachfile(0x1001d8a28, 0xffffffff6319656c, 0x0, 0x53, 0x2f,
>> 0xf), at 0xffffffff63174748
>>>> [6] find_dyn_components(0x0, 0xffffffff6323b570, 0x0, 0x1,
>> 0xffffffff7fffd6a0, 0xffffffff702a0010), at 0xffffffff63195e38
>>>> [7] mca_base_component_find(0x0, 0xffffffff6323b570, 0xffffffff6335e1b0,
>> 0x0, 0xffffffff7fffd6a0, 0x1), at 0xffffffff631954d8
>>>> [8] mca_base_framework_components_register(0xffffffff6335e1c0, 0x0, 0x3e,
>> 0x0, 0x3b, 0x100800), at 0xffffffff631b1638
>>>> [9] mca_base_framework_register(0xffffffff6335e1c0, 0x0, 0x2,
>> 0xffffffff7fffd8d0, 0x0, 0xffffffff702a0010), at 0xffffffff631b24d4
>>>> [10] mca_base_framework_open(0xffffffff6335e1c0, 0x0, 0x2,
>> 0xffffffff7fffd990, 0x0, 0xffffffff702a0010), at 0xffffffff631b25d0
>>>> [11] opal_init(0xffffffff7fffdd70, 0xffffffff7fffdd78, 0x100117c60,
>> 0xffffffff7fffde58, 0x400, 0x100117c60), at
>>>> 0xffffffff63153694
>>>> [12] orterun(0x4, 0xffffffff7fffde58, 0x2, 0xffffffff7fffdda0, 0x0,
>> 0xffffffff702a0010), at 0x100005078
>>>> [13] main(0x4, 0xffffffff7fffde58, 0xffffffff7fffde80, 0x100117c60,
>> 0x100000000, 0xffffffff6a700200), at 0x100003d68
>>>> (dbx)
>>>>
>>>>
>>>>
>>>> I get the following output with gdb.
>>>>
>>>> tyr small_prog 107 /usr/local/gdb-7.6.1_64_gcc/bin/gdb
>> /usr/local/openmpi-1.8.2_64_gcc/bin/mpiexec
>>>> GNU gdb (GDB) 7.6.1
>>>> Copyright (C) 2013 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 "sparc-sun-solaris2.10".
>>>> For bug reporting instructions, please see:
>>>> <http://www.gnu.org/software/gdb/bugs/>...
>>>> Reading symbols from
>> /export2/prog/SunOS_sparc/openmpi-1.8.2_64_gcc/bin/orterun...done.
>>>> (gdb) run -np 1 a.out
>>>> Starting program: /usr/local/openmpi-1.8.2_64_gcc/bin/mpiexec -np 1 a.out
>>>> [Thread debugging using libthread_db enabled]
>>>> [New Thread 1 (LWP 1)]
>>>> [New LWP 2 ]
>>>> [tyr:27867] *** Process received signal ***
>>>> [tyr:27867] Signal: Bus Error (10)
>>>> [tyr:27867] Signal code: Invalid address alignment (1)
>>>> [tyr:27867] Failing at address: ffffffff7fffd224
>>>>
>> /export2/prog/SunOS_sparc/openmpi-1.8.2_64_gcc/lib64/libopen-pal.so.6.2.0:opal_b
>> acktrace_print+0x2c
>> /export2/prog/SunOS_sparc/openmpi-1.8.2_64_gcc/lib64/libopen-pal.so.6.2.0:0xccfa
>> 0
>>>> /lib/sparcv9/libc.so.1:0xd8b98
>>>> /lib/sparcv9/libc.so.1:0xcc70c
>>>> /lib/sparcv9/libc.so.1:0xcc918
>>>>
>> /export2/prog/SunOS_sparc/openmpi-1.8.2_64_gcc/lib64/openmpi/mca_db_hash.so:0x3e
>> e8 [ Signal 10 (BUS)]
>> /export2/prog/SunOS_sparc/openmpi-1.8.2_64_gcc/lib64/libopen-pal.so.6.2.0:opal_d
>> b_base_store+0xc8
>> /export2/prog/SunOS_sparc/openmpi-1.8.2_64_gcc/lib64/libopen-rte.so.7.0.4:orte_u
>> til_decode_pidmap+0x798
>> /export2/prog/SunOS_sparc/openmpi-1.8.2_64_gcc/lib64/libopen-rte.so.7.0.4:orte_u
>> til_nidmap_init+0x3cc
>> /export2/prog/SunOS_sparc/openmpi-1.8.2_64_gcc/lib64/openmpi/mca_ess_env.so:0x22
>> 6c
>> /export2/prog/SunOS_sparc/openmpi-1.8.2_64_gcc/lib64/libopen-rte.so.7.0.4:orte_i
>> nit+0x308
>> /export2/prog/SunOS_sparc/openmpi-1.8.2_64_gcc/lib64/libmpi.so.1.5.2:ompi_mpi_in
>> it+0x31c
>> /export2/prog/SunOS_sparc/openmpi-1.8.2_64_gcc/lib64/libmpi.so.1.5.2:PMPI_Init+0
>> x2a8
>> /home/fd1026/work/skripte/master/parallel/prog/mpi/small_prog/a.out:main+0x20
>> /home/fd1026/work/skripte/master/parallel/prog/mpi/small_prog/a.out:_start+0x7c
>>>> [tyr:27867] *** End of error message ***
>>>> --------------------------------------------------------------------------
>>>> mpiexec noticed that process rank 0 with PID 27867 on node tyr exited on
>> signal 10 (Bus Error).
>>>> --------------------------------------------------------------------------
>>>> [LWP 2 exited]
>>>> [New Thread 2 ]
>>>> [Switching to Thread 1 (LWP 1)]
>>>> sol_thread_fetch_registers: td_ta_map_id2thr: no thread can be found to
>> satisfy query
>>>> (gdb) bt
>>>> #0 0xffffffff7f6173d0 in rtld_db_dlactivity () from
>> /usr/lib/sparcv9/ld.so.1
>>>> #1 0xffffffff7f6175a8 in rd_event () from /usr/lib/sparcv9/ld.so.1
>>>> #2 0xffffffff7f618950 in lm_delete () from /usr/lib/sparcv9/ld.so.1
>>>> #3 0xffffffff7f6226bc in remove_so () from /usr/lib/sparcv9/ld.so.1
>>>> #4 0xffffffff7f624574 in remove_hdl () from /usr/lib/sparcv9/ld.so.1
>>>> #5 0xffffffff7f61d97c in dlclose_core () from /usr/lib/sparcv9/ld.so.1
>>>> #6 0xffffffff7f61d9d4 in dlclose_intn () from /usr/lib/sparcv9/ld.so.1
>>>> #7 0xffffffff7f61db0c in dlclose () from /usr/lib/sparcv9/ld.so.1
>>>> #8 0xffffffff7ec7746c in vm_close ()
>>>> from /usr/local/openmpi-1.8.2_64_gcc/lib64/libopen-pal.so.6
>>>> #9 0xffffffff7ec74a4c in lt_dlclose ()
>>>> from /usr/local/openmpi-1.8.2_64_gcc/lib64/libopen-pal.so.6
>>>> #10 0xffffffff7ec99b70 in ri_destructor (obj=0x1001ead30)
>>>> at
>> ../../../../openmpi-1.8.2rc3/opal/mca/base/mca_base_component_repository.c:391
>>>> #11 0xffffffff7ec98488 in opal_obj_run_destructors (object=0x1001ead30)
>>>> at ../../../../openmpi-1.8.2rc3/opal/class/opal_object.h:446
>>>> #12 0xffffffff7ec993ec in mca_base_component_repository_release (
>>>> component=0xffffffff7b023cf0 <mca_oob_tcp_component>)
>>>> at
>> ../../../../openmpi-1.8.2rc3/opal/mca/base/mca_base_component_repository.c:244
>>>> #13 0xffffffff7ec9b734 in mca_base_component_unload (
>>>> component=0xffffffff7b023cf0 <mca_oob_tcp_component>, output_id=-1)
>>>> at
>> ../../../../openmpi-1.8.2rc3/opal/mca/base/mca_base_components_close.c:47
>>>> #14 0xffffffff7ec9b7c8 in mca_base_component_close (
>>>> component=0xffffffff7b023cf0 <mca_oob_tcp_component>, output_id=-1)
>>>> at
>> ../../../../openmpi-1.8.2rc3/opal/mca/base/mca_base_components_close.c:60
>>>> #15 0xffffffff7ec9b89c in mca_base_components_close (output_id=-1,
>>>> components=0xffffffff7f12b430 <orte_oob_base_framework+80>, skip=0x0)
>>>> ---Type <return> to continue, or q <return> to quit---
>>>> at
>> ../../../../openmpi-1.8.2rc3/opal/mca/base/mca_base_components_close.c:86
>>>> #16 0xffffffff7ec9b804 in mca_base_framework_components_close (
>>>> framework=0xffffffff7f12b3e0 <orte_oob_base_framework>, skip=0x0)
>>>> at
>> ../../../../openmpi-1.8.2rc3/opal/mca/base/mca_base_components_close.c:66
>>>> #17 0xffffffff7efae1e4 in orte_oob_base_close ()
>>>> at ../../../../openmpi-1.8.2rc3/orte/mca/oob/base/oob_base_frame.c:94
>>>> #18 0xffffffff7ecb28ac in mca_base_framework_close (
>>>> framework=0xffffffff7f12b3e0 <orte_oob_base_framework>)
>>>> at ../../../../openmpi-1.8.2rc3/opal/mca/base/mca_base_framework.c:187
>>>> #19 0xffffffff7bf078c0 in rte_finalize ()
>>>> at ../../../../../openmpi-1.8.2rc3/orte/mca/ess/hnp/ess_hnp_module.c:858
>>>> #20 0xffffffff7ef30a44 in orte_finalize ()
>>>> at ../../openmpi-1.8.2rc3/orte/runtime/orte_finalize.c:65
>>>> #21 0x00000001000070c4 in orterun (argc=4, argv=0xffffffff7fffe0e8)
>>>> at ../../../../openmpi-1.8.2rc3/orte/tools/orterun/orterun.c:1096
>>>> #22 0x0000000100003d70 in main (argc=4, argv=0xffffffff7fffe0e8)
>>>> at ../../../../openmpi-1.8.2rc3/orte/tools/orterun/main.c:13
>>>> (gdb)
>>>>
>>>>
>>>> Is the above information helpful to track down the error? Do you need
>>>> anything else? Thank you very much for any help in advance.
>>>>
>>>>
>>>> Kind regards
>>>>
>>>> Siegmar
>>>>
>>>>
>>>>
>>>>
>>>>> On Jul 25, 2014, at 2:08 AM, Siegmar Gross
>> <siegmar.gr...@informatik.hs-fulda.de> wrote:
>>>>>> Hi,
>>>>>>
>>>>>> I have installed openmpi-1.8.2rc2 with gcc-4.9.0 on Solaris
>>>>>> 10 Sparc and I receive a bus error, if I run a small program.
>>>>>>
>>>>>> tyr hello_1 105 mpiexec -np 2 a.out
>>>>>> [tyr:29164] *** Process received signal ***
>>>>>> [tyr:29164] Signal: Bus Error (10)
>>>>>> [tyr:29164] Signal code: Invalid address alignment (1)
>>>>>> [tyr:29164] Failing at address: ffffffff7fffd1c4
>>>>>>
>> /export2/prog/SunOS_sparc/openmpi-1.8.2_64_gcc/lib64/libopen-pal.so.6.2.0:opal_b
>> acktrace_print+0x2c
>> /export2/prog/SunOS_sparc/openmpi-1.8.2_64_gcc/lib64/libopen-pal.so.6.2.0:0xccfd
>> 0
>>>>>> /lib/sparcv9/libc.so.1:0xd8b98
>>>>>> /lib/sparcv9/libc.so.1:0xcc70c
>>>>>> /lib/sparcv9/libc.so.1:0xcc918
>>>>>>
>> /export2/prog/SunOS_sparc/openmpi-1.8.2_64_gcc/lib64/openmpi/mca_db_hash.so:0x3e
>> e8 [ Signal 10 (BUS)]
>> /export2/prog/SunOS_sparc/openmpi-1.8.2_64_gcc/lib64/libopen-pal.so.6.2.0:opal_d
>> b_base_store+0xc8
>> /export2/prog/SunOS_sparc/openmpi-1.8.2_64_gcc/lib64/libopen-rte.so.7.0.4:orte_u
>> til_decode_pidmap+0x798
>> /export2/prog/SunOS_sparc/openmpi-1.8.2_64_gcc/lib64/libopen-rte.so.7.0.4:orte_u
>> til_nidmap_init+0x3cc
>> /export2/prog/SunOS_sparc/openmpi-1.8.2_64_gcc/lib64/openmpi/mca_ess_env.so:0x22
>> 6c
>> /export2/prog/SunOS_sparc/openmpi-1.8.2_64_gcc/lib64/libopen-rte.so.7.0.4:orte_i
>> nit+0x308
>> /export2/prog/SunOS_sparc/openmpi-1.8.2_64_gcc/lib64/libmpi.so.1.5.2:ompi_mpi_in
>> it+0x31c
>> /export2/prog/SunOS_sparc/openmpi-1.8.2_64_gcc/lib64/libmpi.so.1.5.2:PMPI_Init+0
>> x2a8
>>>>>> /home/fd1026/work/skripte/master/parallel/prog/mpi/hello_1/a.out:main+0x20
>>>>>>
>> /home/fd1026/work/skripte/master/parallel/prog/mpi/hello_1/a.out:_start+0x7c
>>>>>> [tyr:29164] *** End of error message ***
>>>>>> ...
>>>>>>
>>>>>>
>>>>>> I get the following output if I run the program in "dbx".
>>>>>>
>>>>>> ...
>>>>>> RTC: Enabling Error Checking...
>>>>>> RTC: Running program...
>>>>>> Write to unallocated (wua) on thread 1:
>>>>>> Attempting to write 1 byte at address 0xffffffff79f04000
>>>>>> t@1 (l@1) stopped in _readdir at 0xffffffff55174da0
>>>>>> 0xffffffff55174da0: _readdir+0x0064: call
>> _PROCEDURE_LINKAGE_TABLE_+0x2380 [PLT] ! 0xffffffff55342a80
>>>>>> (dbx)
>>>>>>
>>>>>>
>>>>>> Hopefully the above output helps to fix the error. Can I provide
>>>>>> anything else? Thank you very much for any help in advance.
>>>>>>
>>>>>>
>>>>>> Kind regards
>>>>>>
>>>>>> Siegmar
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