[Pkg-openmpi-maintainers] Bug#848574: openmpi: frequent segfault in linker on mips64el

[Ansgar Burchardt]

Package: libopenmpi-dev
Version: 2.0.2~git.20161225-8
Severity: important

[ CC'ed debian-mips@ as a segfault in the linker might not be a bug in MPI ]

OpenMPI crashed frequenly in the runtime linker on mips64el, even for a
trivial program calling just MPI_Init and MPI_Finalize:

+---
| #include <mpi.h>
|
| int main(int argc, char** argv)
| {
|   MPI_Init(&argc, &argv);
|   MPI_Finalize();
|   return 0;
| }
+---[ test.cc ]

After building with `mpic++ -o test test.cc`, I often get the following
backtrace from the core file:

+---
| Core was generated by `./test'.
| Program terminated with signal SIGSEGV, Segmentation fault.
| #0  elf_machine_runtime_link_map (gpreg=<optimized out>, stub_pc=1099310712688)
|     at ../sysdeps/mips/dl-trampoline.c:84
| 84	../sysdeps/mips/dl-trampoline.c: No such file or directory.
| [Current thread is 1 (LWP 2837)]
| (gdb) bt
| #0  elf_machine_runtime_link_map (gpreg=<optimized out>, stub_pc=1099310712688)
|     at ../sysdeps/mips/dl-trampoline.c:84
| #1  __dl_runtime_resolve (sym_index=151, return_address=<optimized out>, old_gpreg=<optimized out>, 
|     stub_pc=1099310712688) at ../sysdeps/mips/dl-trampoline.c:125
| #2  0x000000fff5e341ac in _dl_runtime_resolve () from /lib64/ld.so.1
| Backtrace stopped: frame did not save the PC
+---[ backtrace from `gdb ./test core` ]

I noticed as src:dune-common/2.5.0-1 failed on mips64el even though the last
upload build sucessfully.

Ansgar

-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: mips64el (mips64)

Kernel: Linux 4.7.0-0.bpo.1-octeon (SMP w/4 CPU cores)
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/dash
Init: unable to detect

Versions of packages libopenmpi-dev depends on:
ii  libc6           2.24-8
ii  libhwloc-dev    1.11.5-1
ii  libhwloc5       1.11.5-1
ii  libibverbs-dev  1.2.1-2
ii  libopenmpi2     2.0.2~git.20161225-8
ii  openmpi-common  2.0.2~git.20161225-8

libopenmpi-dev recommends no packages.

Versions of packages libopenmpi-dev suggests:
pn  openmpi-doc  <none>

-- no debconf information