Re: kern/58387: Adding vlan to bridge causes lockup

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

The following reply was made to PR kern/58387; it has been noted by GNATS.

From: Manuel Bouyer <bouyer%antioche.eu.org@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost
Subject: Re: kern/58387: Adding vlan to bridge causes lockup
Date: Mon, 1 Jul 2024 22:32:58 +0200

 On Mon, Jul 01, 2024 at 08:00:05PM +0000, john%ziaspace.com@localhost wrote:
 > >Number:         58387
 > >Category:       kern
 > >Synopsis:       Adding vlan to bridge causes lockup
 > >Confidential:   no
 > >Severity:       serious
 > >Priority:       medium
 > >Responsible:    kern-bug-people
 > >State:          open
 > >Class:          sw-bug
 > >Submitter-Id:   net
 > >Arrival-Date:   Mon Jul 01 20:00:05 +0000 2024
 > >Originator:     John Klos
 > >Release:        NetBSD 10.0_STABLE
 > >Organization:
 > 	
 > >Environment:
 > 	
 > 	
 > System: NetBSD cat.zia.io 10.0_STABLE NetBSD 10.0_STABLE (GENERIC) #0: Thu Jun 27 05:26:35 UTC 2024  john%cat.zia.io@localhost:/usr/obj-amd64/sys/arch/amd64/compile/GENERIC amd64
 > Architecture: x86_64
 > Machine: amd64
 > >Description:
 > 	
 > When adding a vlan interface to a bridge, things work as expected for a minute or two.
 > However, after a short time, the kernel locks up completely. Can't get in to kernel
 > debugger because USB stops working.
 > How-To-Repeat:
 > 	<code/input/activities to reproduce the problem (multiple lines)>
 > ifconfig.vlan0:
 > create
 > vlan 108 vlanif bge1
 > up
 > 
 > Then:
 > ifconfig bridge0 create
 > ifconfig bridge0 up
 > ifconfig tap0 create
 > ifconfig tap0 up
 > brconfig bridge0 add vlan0 add tap0
 
 I'm not sure it's related to vlan; I'm using vlans with bridges here
 (on wm or ixl interfaces) without issue.
 It may be related to bge, or tap
 
 -- 
 Manuel Bouyer <bouyer%antioche.eu.org@localhost>
      NetBSD: 26 ans d'experience feront toujours la difference
 --