I think so. What probably happens here is MSan confuses the configure script into thinking that openpty is available without -lutil, but what's actually available is just a stub that tries calling the real openpty and fails, unless libutil is linked.
On Mon, Nov 23, 2015 at 10:41 AM, Schlottke-Lakemper, Michael <m.schlottke-lakem...@aia.rwth-aachen.de> wrote: > Hi Evgenii, > > Just to clarify: you mean I should re-compile OpenMPI and add “-lutil” to > LDFLAGS at configure time? > > Yours > > Michael > >> On 23 Nov 2015, at 18:07 , Evgenii Stepanov <eugeni.stepa...@gmail.com> >> wrote: >> >> This is caused by missing -lutil. >> FTR, http://llvm.org/viewvc/llvm-project?rev=245619&view=rev >> >> On Mon, Nov 23, 2015 at 7:33 AM, Schlottke-Lakemper, Michael via >> cfe-users <cfe-users@lists.llvm.org> wrote: >>> Hi folks, >>> >>> When running “mpirun” of an msan-instrumented installation of OpenMPI, I >>> get the following error: >>> >>> $> mpirun -n 1 hostname >>> [aia308:48324] *** Process received signal *** >>> [aia308:48324] Signal: Segmentation fault (11) >>> [aia308:48324] Signal code: Address not mapped (1) >>> [aia308:48324] Failing at address: (nil) >>> [aia308:48324] [ 0] >>> /pds/opt/openmpi-1.8.7-clang-msan/lib64/libopen-pal.so.6(+0x123ca1)[0x7f9e21c90ca1] >>> [aia308:48324] [ 1] mpirun[0x42b602] >>> [aia308:48324] [ 2] /lib64/libpthread.so.0(+0xf890)[0x7f9e21250890] >>> [aia308:48324] *** End of error message *** >>> Segmentation fault >>> >>> Running it through gdb and printing the stacktrace, I get the following >>> additional information: >>> $> gdb -ex r --args mpirun -n 1 hostname >>> #0 0x0000000000000000 in ?? () >>> #1 0x000000000042bd5b in __interceptor_openpty () at >>> /pds/opt/install/llvm/llvm-20151121-r253770-src/projects/compiler-rt/lib/msan/msan_interceptors.cc:1355 >>> #2 0x00007ffff7705a7c in opal_openpty (amaster=0x7fffffffacf8, >>> aslave=0x7fffffffacfc, name=0x0, termp=0x0, winp=0x0) at >>> ../../../openmpi-1.8.7/opal/util/opal_pty.c:116 >>> #3 0x00007ffff7b31e9a in orte_iof_base_setup_prefork (opts=0x7ffffffface8) >>> at ../../../../openmpi-1.8.7/orte/mca/iof/base/iof_base_setup.c:89 >>> #4 0x00007fffefea465a in odls_default_fork_local_proc >>> (context=0x72400000bb80, child=0x72400000b880, environ_copy=0x73400001ec00, >>> jobdat=0x722000009d80) at >>> ../../../../../openmpi-1.8.7/orte/mca/odls/default/odls_default_module.c:860 >>> #5 0x00007ffff7b3cfb8 in orte_odls_base_default_launch_local (fd=-1, sd=4, >>> cbdata=0x70600002da80) at >>> ../../../../openmpi-1.8.7/orte/mca/odls/base/odls_base_default_fns.c:1544 >>> #6 0x00007ffff77459d7 in event_process_active_single_queue >>> (base=0x72a00000fc80, activeq=0x71000000bdc0) at >>> ../../../../../../openmpi-1.8.7/opal/mca/event/libevent2021/libevent/event.c:1367 >>> #7 0x00007ffff773bb92 in event_process_active (base=0x72a00000fc80) at >>> ../../../../../../openmpi-1.8.7/opal/mca/event/libevent2021/libevent/event.c:1437 >>> #8 0x00007ffff7738fd7 in opal_libevent2021_event_base_loop >>> (base=0x72a00000fc80, flags=1) at >>> ../../../../../../openmpi-1.8.7/opal/mca/event/libevent2021/libevent/event.c:1647 >>> #9 0x000000000048f651 in orterun (argc=4, argv=0x7fffffffcea8) at >>> ../../../../openmpi-1.8.7/orte/tools/orterun/orterun.c:1133 >>> #10 0x000000000048b20c in main (argc=4, argv=0x7fffffffcea8) at >>> ../../../../openmpi-1.8.7/orte/tools/orterun/main.c:13 >>> >>> I suspect that has something to do with using some non-msan-instrumented >>> system libraries, but how can I find out which library is the problem and >>> what to do to fix it? Any ideas? >>> >>> Regards, >>> >>> Michael >>> >>> P.S.: I compiled OpenMPI with the following configure command (the wildcard >>> blacklist was necessary because OpenMPI just has too many issues with >>> msan…): >>> >>> printf "fun:*\n" > blacklist.txt && \ >>> CC=clang CXX=clang++ \ >>> CFLAGS="-g -fsanitize=memory -fno-omit-frame-pointer >>> -fsanitize-memory-track-origins -fsanitize-blacklist=`pwd`/blacklist.txt" \ >>> CXXFLAGS="-g -fsanitize=memory -fno-omit-frame-pointer >>> -fsanitize-memory-track-origins -fsanitize-blacklist=`pwd`/blacklist.txt" \ >>> ../openmpi-1.8.7/configure --prefix=/pds/opt/openmpi-1.8.7-clang-msan >>> --disable-mpi-fortran >>> _______________________________________________ >>> cfe-users mailing list >>> cfe-users@lists.llvm.org >>> http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-users > _______________________________________________ cfe-users mailing list cfe-users@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-users
