[Bug 1096276] New: signal 27 (SIGPROF) not passed to container using --sig-proxy

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1096276

Bug ID: 1096276
           Summary: signal 27 (SIGPROF) not passed to container using
                    --sig-proxy
           Product: Red Hat Enterprise Linux 7
           Version: 7.1
         Component: docker
          Assignee: [e-mail]
          Reporter: [e-mail]
        QA Contact: [e-mail]
                CC: [e-mail], [e-mail],
                    [e-mail], [e-mail],
                    [e-mail], [e-mail],
                    [e-mail]
        Depends On: 1087720

+++ This bug was initially created as a clone of Bug #1087720 +++

Description of problem:
When I send signal 27 to the docker process, which is running with
--sig-proxy=true, it's not forwarded. Other signals are...

Version-Release number of selected component (if applicable):
docker-0.10.0-8.el7.x86_64
docker-io-0.9.1-1.fc21.x86_64
upstream Docker version 0.10.0, build dc9c28f/0.10.0

How reproducible:
always

Steps to Reproduce:
1. /usr/bin/docker -D run --tty=false --rm -i --name test_eoly
localhost:5000/ldoktor/fedora:latest bash -c 'for NUM in `seq 1 64`; do trap
"echo Received $NUM, ignoring..." $NUM; done; while :; do sleep 1; done'
2. ps ax |grep docker
3. kill -27 $PID

Actual results:
nothing

Expected results:
Received 27, ignoring...

Additional info:
When you send any other signal (apart from 19 or 9) it works fine.

--- Additional comment from Lukas Doktor on 2014-04-15 04:59:24 EDT ---

The signal 17 is also ignored.

--- Additional comment from Lukas Doktor on 2014-05-05 03:48:25 EDT ---

The same bug is in upstream Docker version 0.10.0, build dc9c28f/0.10.0

Referenced Bugs:

https://bugzilla.redhat.com/show_bug.cgi?id=1087720
[Bug 1087720] signal 27 (SIGPROF) not passed to container using --sig-proxy