Hi, On my Fedora 29 when ever I run all the ovs tests with "-j5", I see few core dumps generated for ovsdb-server and python2.
Here's the back trace ************ [root@nusiddiq ovsdb]# gdb ./ovsdb-server /opt/core_dumps/core.ovsdb-server.24604 GNU gdb (GDB) Fedora 8.2-6.fc29 ... ... Core was generated by `ovsdb-server --monitor --pidfile --no-db'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007f813cdfe3e8 in poll () from /lib64/libc.so.6 Missing separate debuginfos, use: dnf debuginfo-install glibc-2.28-26.fc29.x86_64 libatomic-8.3.1-2.fc29.x86_64 libcap-ng-0.7.9-5.fc29.x86_64 libevent-2.1.8-3.fc29.x86_64 openssl-libs-1.1.1b-2.fc29.x86_64 python3-libs-3.7.2-4.fc29.x86_64 unbound-libs-1.8.3-2.fc29.x86_64 zlib-1.2.11-14.fc29.x86_64 (gdb) bt #0 0x00007f813cdfe3e8 in poll () from /lib64/libc.so.6 #1 0x00000000004453c4 in time_poll (pollfds=pollfds@entry=0xfbb320, n_pollfds=2, handles=handles@entry=0x0, timeout_when=24471727, elapsed=elapsed@entry=0x7fff612d09ac) at ../lib/timeval.c:326 #2 0x000000000043b1c4 in poll_block () at ../include/openvswitch/hmap.h:232 #3 0x0000000000406dd7 in main_loop (is_backup=0x7fff612d0a5e, exiting=0x7fff612d0a5f, run_process=0x0, remotes=0x7fff612d0ab0, unixctl=0xfb1420, all_dbs=0x7fff612d0af0, jsonrpc=0xf7eec0, config=0x7fff612d0b10) at ../ovsdb/ovsdb-server.c:280 #4 main (argc=<optimized out>, argv=<optimized out>) at ../ovsdb/ovsdb-server.c:460 [root@nusiddiq ovsdb]# gdb /usr/bin/python2 /opt/core_dumps/core.python2.26288 GNU gdb (GDB) Fedora 8.2-6.fc29 .. .. Core was generated by `/usr/bin/python2 ../../../../tests/test-daemon.py --pidfile --monitor'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007f7074fbeccb in select () from /lib64/libc.so.6 Missing separate debuginfos, use: dnf debuginfo-install python2-2.7.15-11.fc29.x86_64 (gdb) bt #0 0x00007f7074fbeccb in select () from /lib64/libc.so.6 #1 0x00007f7074c50e10 in ?? () from /usr/lib64/python2.7/lib-dynload/timemodule.so #2 0x00007f70753b114b in PyEval_EvalFrameEx () from /lib64/libpython2.7.so.1.0 #3 0x00007f70753b01ac in PyEval_EvalFrameEx () from /lib64/libpython2.7.so.1.0 #4 0x00007f70753b1902 in PyEval_EvalCodeEx () from /lib64/libpython2.7.so.1.0 #5 0x00007f70753b1b9d in PyEval_EvalCode () from /lib64/libpython2.7.so.1.0 #6 0x00007f70753b7b4f in ?? () from /lib64/libpython2.7.so.1.0 #7 0x00007f70753b7af8 in PyRun_FileExFlags () from /lib64/libpython2.7.so.1.0 #8 0x00007f70753b790c in PyRun_SimpleFileExFlags () from /lib64/libpython2.7.so.1.0 #9 0x00007f70753bd5ba in Py_Main () from /lib64/libpython2.7.so.1.0 #10 0x00007f7074eee413 in __libc_start_main () from /lib64/libc.so.6 #11 0x000055c873ddc0ae in _start () **************** The glibc version is 2.28 (glibc-2.28-26.fc29.x86_64) We have seen similar crashes with ovn-controller and ovs-vswitchd in this BZ - https://bugzilla.redhat.com/show_bug.cgi?id=1685058 And the backtrace goes to libc. Is anyone aware of this or have any pointers what could be going on here ? Thanks Numan _______________________________________________ dev mailing list d...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-dev