[Bug 262829] epair: New panic when destroying epair interface of vnet jail

From: <bugzilla-noreply_at_freebsd.org>
Date: Sat, 26 Mar 2022 13:18:40 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=262829

            Bug ID: 262829
           Summary: epair: New panic when destroying epair interface of
                    vnet jail
           Product: Base System
           Version: 13.1-RELEASE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: grembo@FreeBSD.org
                CC: bz@FreeBSD.org, kp@freebsd.org

Created attachment 232736
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=232736&action=edit
Script to trigger epair panic

This panic looks very similar to bug #234985 and can be triggered easily using
the attached crash_epair.sh script.

Tested on:
- 13.0-RELEASE-p8
- 13.1-BETA1
- 13.1-BETA2

If it helps, I could create a separate PR for 13.0 (as epair changed a lot,
crashdumps differ), but for know I would like to keep the discussion in one
place.

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