On 15 Apr 2020, at 15:34, Kristof Provost wrote:
On 15 Apr 2020, at 0:37, Li-Wen Hsu wrote:
(Please send the followup to freebsd-testing@ and note Reply-To is set.)

FreeBSD CI Weekly Report 2020-04-12
===================================

Here is a summary of the FreeBSD Continuous Integration results for the period
from 2020-04-06 to 2020-04-12.

During this period, we have:

* 1801 builds (94.0% (+0.4) passed, 6.0% (-0.4) failed) of buildworld and buildkernel (GENERIC and LINT) were executed on aarch64, amd64, armv6,
  armv7, i386, mips, mips64, powerpc, powerpc64, powerpcspe, riscv64,
  sparc64 architectures for head, stable/12, stable/11 branches.
* 288 test runs (25.1% (-24.6) passed, 29.9% (+10.6) unstable, 45.1% (+14.1) exception) were executed on amd64, i386, riscv64 architectures for head,
  stable/12, stable/11 branches.
* 30 doc and www builds (83.3% (-1.3) passed, 16.7% (+1.3) failed)

Test case status (on 2020-04-12 23:59):
| Branch/Architecture | Total | Pass | Fail | Skipped | | ------------------- | --------- | ---------- | -------- | -------- | | head/amd64 | 7744 (+4) | 7638 (+19) | 14 (+5) | 92 (-20) | | head/i386 | 7742 (+4) | 7628 (+15) | 16 (+5) | 98 (-16) | | 12-STABLE/amd64 | 7508 (0) | 7449 (-3) | 1 (+1) | 58 (+2) | | 12-STABLE/i386 | 7506 (0) | 7425 (-17) | 2 (+2) | 79 (+15) | | 11-STABLE/amd64 | 6882 (0) | 6829 (-6) | 1 (+1) | 52 (+5) | | 11-STABLE/i386 | 6880 (0) | 6749 (-82) | 80 (+80) | 51 (+2) |

(The statistics from experimental jobs are omitted)

If any of the issues found by CI are in your area of interest or expertise
please investigate the PRs listed below.

The latest web version of this report is available at
https://hackmd.io/@FreeBSD-CI/report-20200412 and archive is available at
https://hackmd.io/@FreeBSD-CI/ , any help is welcome.

## News

* The test env now loads the required module for firewall tests.

* New armv7 job is added (to replace armv6 one):
  * FreeBSD-head-armv7-testvm
  The images are available at https://artifact.ci.freebsd.org
  FreeBSD-head-armv7-test is ready but needs test env update.

## Failing jobs

* https://ci.freebsd.org/job/FreeBSD-head-amd64-gcc6_build/
  * See console log for the error details.

## Failing tests

* https://ci.freebsd.org/job/FreeBSD-head-amd64-test/
  * local.kyua.integration.cmd_about_test.topic__authors__installed
  * sys.netipsec.tunnel.empty.v4
  * sys.netipsec.tunnel.empty.v6
  * sys.netpfil.common.forward.ipf_v4
  * sys.netpfil.common.forward.ipfw_v4
  * sys.netpfil.common.forward.pf_v4
  * sys.netpfil.common.tos.ipfw_tos
  * sys.netpfil.common.tos.pf_tos
  * sys.netpfil.pf.forward.v4
I can’t actually reproduce this failure in my test VM, but with the ci test VM I can reproduce the problem. It’s not related to pf, because the sanity check ping we do before we set up pf already fails. Or rather pft_ping.py sends an incorrect packet, because `ping` does get the packet to go where it’s supposed to go.

Scapy seems to fail to find the source IP address, so we get this:

12:12:22.152652 IP 0.0.0.0 > 198.51.100.3: ICMP echo request, id 0, seq 0, length 12

I have a vague recollection that we’ve seem this problem before, but I can’t remember what we did about it.

In all likelihood most of the other netpfil tests fail for exactly the same reason.

The problem appears to be that /usr/local/lib/python3.7/site-packages/scapy/arch/unix.py is misparsing the `netstat -rnW` output.

For reference, this is the output in the test VM:

        Routing tables

        Internet:
Destination Gateway Flags Nhop# Mtu Netif Expire
        127.0.0.1          link#2             UH          1  16384        lo0
        192.0.2.0/24       link#4             U           2   1500    epair0a
        192.0.2.1          link#4             UHS         1  16384        lo0
        198.51.100.0/24    192.0.2.2          UGS         3   1500    epair0a

        Internet6:
Destination Gateway Flags Nhop# Mtu Netif Expire ::/96 ::1 UGRS 4 16384 lo0 ::1 link#2 UH 1 16384 lo0 ::ffff:0.0.0.0/96 ::1 UGRS 4 16384 lo0 fe80::/10 ::1 UGRS 4 16384 lo0 fe80::%lo0/64 link#2 U 3 16384 lo0 fe80::1%lo0 link#2 UHS 2 16384 lo0 fe80::%epair0a/64 link#4 U 5 1500 epair0a fe80::3d:9dff:fe7c:d70a%epair0a link#4 UHS 1 16384 lo0 fe80::%epair1a/64 link#6 U 6 1500 epair1a fe80::37:9eff:fe03:250a%epair1a link#6 UHS 1 16384 lo0 ff02::/16 ::1 UGRS 4 16384 lo0

The parsing code seems to think that the netif for the 198.51.100.0/24 route is 1500 rather than epair0a. This may be related to the difference in netstat output, because on my VM it looks like this:

        Routing tables

        Internet:
Destination Gateway Flags Use Mtu Netif Expire
        default            172.16.2.1         UGS         319   1500     vtnet0
        127.0.0.1          link#2             UH            0  16384        lo0
        172.16.2.0/24      link#1             U            14   1500     vtnet0
        172.16.2.2         link#1             UHS           0  16384        lo0

        Internet6:
Destination Gateway Flags Use Mtu Netif Expire ::/96 ::1 UGRS 0 16384 lo0 ::1 link#2 UH 0 16384 lo0 ::ffff:0.0.0.0/96 ::1 UGRS 0 16384 lo0 fe80::/10 ::1 UGRS 0 16384 lo0 fe80::%vtnet0/64 link#1 U 0 1500 vtnet0 fe80::5a9c:fcff:fe02:a95e%vtnet0 link#1 UHS 0 16384 lo0 fe80::%lo0/64 link#2 U 0 16384 lo0 fe80::1%lo0 link#2 UHS 0 16384 lo0 ff02::/16 ::1 UGRS 0 16384 lo0

I suspect that this change was introduced in r359823 (Introduce nexthop objects and new routing KPI).

Best regards,
Kristof
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