https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=227654
Bug ID: 227654
Summary: [panic] repeatable crash with IPv6+lagg+vlan+em
Product: Base System
Version: 11.1-STABLE
Hardware: Any
OS: Any
Status: New
Keywords: crash
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: n...@freebsd.org
Reporter: eu...@freebsd.org
CC: sta...@freebsd.org
Created attachment 192681
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=192681&action=edit
panic screenshot
Hi!
I run my workstation under FreeBSD 11.1-STABLE/amd64 r331249 with custom kernel
including IPv6 support, options DDB, KDB, INVARIANTS and WITNESS.
The following sequence of commands produces a panic reliably, including
cold-booted single user mode:
ifconfig tap0 create up
ifconfig lagg0 create up
ifconfig lagg0 laggport tap0
ifconfig em0 up
ifconfig vlan61 create vlan 61 vlandev em0
ifconfig vlan61 inet 192.168.0.1/24
ifconfig lagg0 laggport em0 # instant panic
Panic messages sometimes printed in bright-white and then system jumps to BIOS
POST within a second or so. Sometimes they are pronted in gray then system just
hangs solid without any reaction on Ctrl-Alt-ESC to enter KDB and no crashdump
generated.
Screenshot is attached.
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