[Bug 240609] iflib: Panic with INVARIANTS: sleeping in an epoch section (12.1-pre-QA) (vlan + lagg involved)

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=240609

--- Comment #11 from commit-hook at FreeBSD.org ---
A commit in branch stable/12 references this bug:

URL:
https://cgit.FreeBSD.org/src/commit/?id=4058265d605de7e6e66d9ad5153ac496f4f3c628

commit 4058265d605de7e6e66d9ad5153ac496f4f3c628
Author:     Gleb Smirnoff <glebius at FreeBSD.org>
AuthorDate: 2020-12-08 16:46:00 +0000
Commit:     Alexander Motin <mav at FreeBSD.org>
CommitDate: 2021-03-09 22:39:06 +0000

    The list of ports in configuration path shall be protected by locks,
    epoch shall be used only for fast path.  Thus use LAGG_XLOCK() in
    lagg_[un]register_vlan.  This fixes sleeping in epoch panic.

    PR:             240609
    (cherry picked from commit e1074ed6a08033ee571b4bedb3ffe6049a4a7361)

 sys/net/if_lagg.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

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