Created attachment 1301446 [details]
Logs with backtrace

state map is read from outside of a lock on line 770:

	if existingConfig, exists := r.state[backendKey]; exists {

Commit pushed to master at https://github.com/openshift/origin

https://github.com/openshift/origin/commit/0b305fba3645f1313b54c30e7890a7a6cf4290f1
Moved locking to protect a read of a map in the router

The locking was not protecting a read, so a simultaneous write would
crash the router.  I made a bunch of new functions that implemented
the functional part of the function without the locking, then made the
locking functions acquire the lock and then call the internal part.
Then in the rename, I moved the lock acquisition earlier and called
the internal functions.

In brief: re-jiggered the code so we could lock properly.

Fixes bug 1473031 (https://bugzilla.redhat.com/show_bug.cgi?id=1473031)

verified this bug on v3.7.0-0.127.0

Create route using the following script
*****test.sh*******************
#!/bin/bash
function _create_routes() {
    local name=$1
    echo "  - worker name: ${name} ... "
    sleep 0.0$((RANDOM%3))

    for idx in `seq $((RANDOM%10))`; do
      local route_name="${NAME_PREFIX}-${name}-id-${idx}"
      oc expose service tc-500001 --name="${route_name}"
    done

}  #  End of function  _create_routes.


#
#  main():
#
ntimes=${1:-20}

for i in `seq ${ntimes}`; do
  _create_routes "worker-${i}" &
done

_create_routes "main"

*****************

No above error logs found in the haproxy pod

So verified this bug.  please correct me if the step is not enough. thanks

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2017:3188