Wow, that is a very strange finding.
I also see it on Fedora 23 with gcc (GCC) 5.3.1 20160406 (Red Hat 5.3.1-6),
2/100 failures with default configuration, 100% failure rate with -march=native.
Lance
----- Original Message -----
> From: "Ilya Maximets" <i.maxim...@samsung.com>
> To: "Numan Siddique" <nusid...@redhat.com>, "Ben Pfaff" <b...@ovn.org>,
> b...@openvswitch.org
> Cc: dev@openvswitch.org, "Ramu Ramamurthy" <ramu.ramamur...@us.ibm.com>,
> "Dyasly Sergey" <s.dya...@samsung.com>
> Sent: Friday, August 5, 2016 9:21:33 AM
> Subject: Re: [ovs-dev] [openvswitch 2.5.90] testsuite: 2224 failed
>
> Exactly same situation with gcc (GCC) 6.1.1 20160510 (Red Hat 6.1.1-2).
>
> On 05.08.2016 14:37, Ilya Maximets wrote:
> > There is one interesting bug:
> >
> > Test 2224 (ovn -- dhcpv4 : 1 HV, 2 LS, 2 LSPs/LS) constantly fails
> > with 'CFLAGS=-march=native'. All other tests works normally.
> >
> > Environment:
> >
> > * OVS current master:
> > commit d59831e9b08e ("bridge: No QoS configured is not an error")
> > * Red Hat Enterprise Linux Server release 7.2 (Maipo)
> > * Compiler: gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-4)
> > * Intel(R) Xeon(R) CPU E5-2690 v3
> >
> > Test scenario:
> >
> > 1. Checkout current master branch.
> >
> > 2. Configure OVS with default configuration:
> >
> > # ./boot.sh && ./configure && make
> >
> > 3. Check test #2224
> >
> > # make check TESTSUITEFLAGS='2224'
> > 2224: ovn -- dhcpv4 : 1 HV, 2 LS, 2 LSPs/LS ok
> >
> > 4. Clean up
> >
> > # make distclean
> >
> > 5. Configure OVS with '-march=native':
> >
> > # ./boot.sh && ./configure CFLAGS="-march=native" && make
> >
> > 6. Check test #2224
> >
> > # make check TESTSUITEFLAGS='2224'
> > 2224: ovn -- dhcpv4 : 1 HV, 2 LS, 2 LSPs/LS FAILED
> > (ovn.at:3205)
> >
> > Test failed because of bad packet:
> >
> > ./ovn.at:3205: cat 1.packets | cut -c 53-
> > --- expout 2016-08-05 14:29:47.205360523 +0300
> > +++ /ovs/tests/testsuite.dir/at-groups/2224/stdout 2016-08-05
> > 14:29:47.215360172 +0300
> > @@ -1 +1 @@
> > -0a0000010a00000400430044011c0000020106006359aa7600000000000000000a0000040000000000000000
> >
> > f000000000010000000000000000000000000000000000000000000000000000000000000000000000000000
> >
> > 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
> >
> > 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
> >
> > 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
> >
> > 0000000000000000000000000000000000000000000000000000000000000000638253633501020104ffffff
> > 0003040a00000136040a000001330400000e1000000000ff00000000
> > +0a0000010a00000400430044011c0000020106006359aa7600000000000000000a0000040000000000000000
> >
> > f000000000010000000000000000000000000000000000000000000000000000000000000000000000000000
> >
> > 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
> >
> > 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
> >
> > 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
> >
> > 00000000000000000000000000000000000000000000000000000000000000006382536335010236040a0000
> > 010104ffffff0003040a000001330400000e1000000000ff00000000
> >
> > Full log attached.
> >
> > Best regards, Ilya Maximets.
> >
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