Bug 239224

Summary:	Virtual Interface: Not Working in Netmap Mode on 11.3 STABLE
Product:	Base System	Reporter:	Charles Goncalves <halfling>
Component:	kern	Assignee:	Vincenzo Maffione <vmaffione>
Status:	Closed DUPLICATE
Severity:	Affects Many People	CC:	vmaffione
Priority:	---	Keywords:	regression
Version:	11.3-STABLE
Hardware:	Any
OS:	Any

Description Charles Goncalves 2019-07-15 13:25:55 UTC

Hello!

I was trying to update my servers from FreeBSD 11.2-STABLE to 11.3-STABLE and first a tested Netmap on top of 11.3-STABLE. My application did a Kernel Panic on my first try.

First I thought my application was wrong so I tried netmap/apps in Virtual Interfaces like(VLAN/TAP/TUN):

pkt-gen -f rx -i vlan5 (Kernel Panic. Server reboot)
pkt-gen -f rx -i tap5 (Kernel Panic. Server reboot)
pkt-gen -f rx -i tun5 (Kernel Panic. Server reboot)

vale-ctl -h vale0:vlan5 (Kernal Panic. Server reboot)
vale-ctl -h vale0:tap5 (Kernal Panic. Server reboot)
vale-ctl -h vale0:tun5 (Kernal Panic. Server reboot)

So I tried with tcpdump:
tcpdump -eni netmap:vlan5 (Kernal Panic. Server reboot)
tcpdump -eni netmap:tap5 (Kernal Panic. Server reboot)
tcpdump -eni netmap:tun5 (Kernal Panic. Server reboot)

This tests is full working in my FreeBSD 11.2-STABLE, but is not working in FreeBSD 11.3-STABLE

Comment 1 Vincenzo Maffione freebsd_committer

2019-07-15 16:07:17 UTC

Hi,
  Maybe you hit the bug introduced by r349922 (fixed in HEAD, will MFC today)?
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=238642 
Can you check if the stack trace is the same?

Comment 2 Charles Goncalves 2019-07-15 18:55:24 UTC

(In reply to Vincenzo Maffione from comment #1)
Yeah it’s the same bug when a run command like Aleksandr Fedorov:

root@current:~ # ifconfig vlan0 create up                                                                                                                                
root@current:~ # vale-ctl -a vale0:vlan0


I’m running on FreeBSD 11.3-STABLE #0 r349942

Comment 3 Vincenzo Maffione freebsd_committer

2019-07-15 20:16:05 UTC

I just committed the fix as r350007.
Can you please try again?

Comment 4 Kubilay Kocak freebsd_committer

2019-07-16 01:27:58 UTC

Panic report & regression reported in bug 238642 (which was/is still open at the time of this report), so close this as a duplicate

*** This bug has been marked as a duplicate of bug 238642 ***

Comment 5 Charles Goncalves 2019-07-16 18:42:07 UTC

(In reply to Vincenzo Maffione from comment #3)
Works fine now on FreeBSD 11.3-STABLE r350026

Thank you!