[Bug 1446974] Re: python-greenlet coredump on Power8 LE guest

[Chuck Short]

This should be fixed in 0.4.10-1

** Changed in: python-greenlet (Ubuntu)
       Status: Triaged => Fix Released

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https://bugs.launchpad.net/bugs/1446974

Title:
  python-greenlet coredump on Power8 LE guest

Status in python-greenlet package in Ubuntu:
  Fix Released

Bug description:
  I was trying to configure openstack nova-compute service on an Power8 LE guest with ubutu 15.04 ppc64el beta2 installed.
  But it crash when calling greenlet 'switch' function.

  So I re-build the greenlet.so from the source, and found that it still
  crash when running tests. Here are log,

  # apt-get source python-greenlet
  # apt-get build-dep python-greenlet
  # dpkg-source -x python-greenlet_0.4.5-1ubuntu1.dsc
  # cd python-greenlet-0.4.5/
  # python setup.py  build
  running build
  running build_ext
  building 'greenlet' extension
  creating build
  creating build/temp.linux-ppc64le-2.7
  powerpc64le-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -D_FORTIFY_SOURCE=2 -g -fstack-protector-strong -Wformat -Werror=format-security -fPIC -I/usr/include/python2.7 -c greenlet.c -o build/temp.linux-ppc64le-2.7/greenlet.o
  creating build/lib.linux-ppc64le-2.7
  powerpc64le-linux-gnu-gcc -pthread -shared -Wl,-O1 -Wl,-Bsymbolic-functions -Wl,-Bsymbolic-functions -Wl,-z,relro -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -D_FORTIFY_SOURCE=2 -g -fstack-protector-strong -Wformat -Werror=format-security -Wl,-Bsymbolic-functions -Wl,-z,relro -D_FORTIFY_SOURCE=2 -g -fstack-protector-strong -Wformat -Werror=format-security build/temp.linux-ppc64le-2.7/greenlet.o -o build/lib.linux-ppc64le-2.7/greenlet.so

  # ./run-tests.py
  running build_ext
  Linking /root/greenlet/python-greenlet-0.4.5/build/lib.linux-ppc64le-2.7/greenlet.so to /root/greenlet/python-greenlet-0.4.5/greenlet.so
  python 2.7.9 (64 bit) using greenlet 0.4.5 from /root/greenlet/python-greenlet-0.4.5/greenlet.so
  test_version (tests.test_version.VersionTests) ... ok
  test_generator (tests.test_generator.GeneratorTests) ... ERROR
  test_arg_refs (tests.test_leaks.ArgRefcountTests) ... Segmentation fault (core dumped)

  # gdb python core
  GNU gdb (Ubuntu 7.9-1ubuntu1) 7.9
  Copyright (C) 2015 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 "powerpc64le-linux-gnu".
  Type "show configuration" for configuration details.
  For bug reporting instructions, please see:
  <http://www.gnu.org/software/gdb/bugs/>.
  Find the GDB manual and other documentation resources online at:
  <http://www.gnu.org/software/gdb/documentation/>.
  For help, type "help".
  Type "apropos word" to search for commands related to "word"...
  Reading symbols from python...Reading symbols from /usr/lib/debug//usr/bin/python2.7...done.
  done.

  warning: core file may not match specified executable file.
  [New LWP 27993]
  [Thread debugging using libthread_db enabled]
  Using host libthread_db library "/lib/powerpc64le-linux-gnu/libthread_db.so.1".
  Core was generated by `python ./run-tests.py '.
  Program terminated with signal SIGSEGV, Segmentation fault.
  #0  slp_save_state (stackref=0x3fffc065e4d0 "\002") at greenlet.c:369
  369             while (owner->stack_stop < target_stop) {
  (gdb) bt
  #0  slp_save_state (stackref=0x3fffc065e4d0 "\002") at greenlet.c:369
  #1  0x00003fffaa3d2a4c in slp_switch () at platform/switch_ppc64_linux.h:69
  #2  0x0000000000000000 in ?? ()
  (gdb) quit

  powerpc64le-linux-gnu-gcc -v
  Using built-in specs.
  COLLECT_GCC=powerpc64le-linux-gnu-gcc
  COLLECT_LTO_WRAPPER=/usr/lib/gcc/powerpc64le-linux-gnu/4.9/lto-wrapper
  Target: powerpc64le-linux-gnu
  Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.9.2-10ubuntu12' --with-bugurl=file:///usr/share/doc/gcc-4.9/README.Bugs --enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.9 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.9 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-libsanitizer --disable-libsanitizer --disable-libquadmath --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.9-ppc64el/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.9-ppc64el --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.9-ppc64el --with-arch-directory=ppc64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc --enable-secureplt --with-cpu=power7 --with-tune=power8 --enable-targets=powerpcle-linux --disable-multilib --enable-multiarch --disable-werror --with-long-double-128 --enable-checking=release --build=powerpc64le-linux-gnu --host=powerpc64le-linux-gnu --target=powerpc64le-linux-gnu
  Thread model: posix
  gcc version 4.9.2 (Ubuntu 4.9.2-10ubuntu12)

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