[ovs-build] Broken: williamtu/ovs-travis#397 (libunwind - 7ea1eb3)

Travis CI builds at travis-ci.org
Mon Mar 23 15:27:29 UTC 2020

Build Update for williamtu/ovs-travis

Build: #397
Status: Broken

Duration: 3 mins and 43 secs
Commit: 7ea1eb3 (libunwind)
Author: William Tu
Message: fatal-signal: Log backtrace when no monitor daemon.

Currently the backtrace logging is only available when monitor
daemon is running.  This patch enables backtrace logging when
no monitor daemon exists.  At signal handling context, it detects
whether monitor daemon exists.  If not, write directly the backtrace
to the vlog fd.  Note that using VLOG_* macro doesn't work due to
it's buffer I/O, so this patch directly issue write() syscall to
the file descriptor.

Signed-off-by: William Tu <u9012063 at gmail.com>
For some system we stop using monitor daemon and use systemd to monitor
ovs-vswitchd, thus need this patch. Example of ovs-vswitchd.log:
2020-03-23T14:42:12.949Z|00049|memory|INFO|175332 kB peak resident set size after 10.0 seconds
2020-03-23T14:42:12.949Z|00050|memory|INFO|handlers:2 ports:3 revalidators:2 rules:8 udpif keys:8
SIGSEGV detected, backtrace:
0x0000000000486969 <fatal_signal_handler+0x49>
0x00007f7f5e57f4b0 <killpg+0x40>
0x000000000047daa8 <pmd_thread_main+0x238>
0x0000000000504edd <ovsthread_wrapper+0x7d>
0x00007f7f5f0476ba <start_thread+0xca>
0x00007f7f5e65141d <clone+0x6d>
0x0000000000000000 <+0x0>

View the changeset: https://github.com/williamtu/ovs-travis/compare/3aeceec3a957...7ea1eb340888

View the full build log and details: https://travis-ci.org/github/williamtu/ovs-travis/builds/665909423?utm_medium=notification&utm_source=email


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