[Bug 280817] With DMAR enabled, my laptop panics

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=280817

--- Comment #23 from commit-hook@FreeBSD.org ---
A commit in branch main references this bug:

URL:
https://cgit.FreeBSD.org/src/commit/?id=45543d3424d46f84a5399879e190fc359dcefbd4

commit 45543d3424d46f84a5399879e190fc359dcefbd4
Author:     Konstantin Belousov <kib@FreeBSD.org>
AuthorDate: 2024-08-20 14:41:33 +0000
Commit:     Konstantin Belousov <kib@FreeBSD.org>
CommitDate: 2024-08-21 15:23:07 +0000

    DMAR: clear dmar_devs[unit] if attach failed

    This should stop attempts to use a unit which was not completely
    initialized, but referenced by ACPI DMAR table during scoped devices
    operions.

    PR:     280817
    Sponsored by:   Advanced Micro Devices (AMD)
    Sponsored by:   The FreeBSD Foundation
    MFC after:      1 week
    Differential revision:  https://reviews.freebsd.org/D46382

 sys/x86/iommu/intel_drv.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

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