[Bug 295528] FreeBSD 15.1-RC1: freebsd-update upgrade from 15.0-RELEASE triggers boot loop / Kernel Panic on systems with amdgpu (drm-kmod) due to ABI mismatch during stage 1 reboot

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=295528

Warner Losh <imp@FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |imp@FreeBSD.org

--- Comment #1 from Warner Losh <imp@FreeBSD.org> ---
I thought we were building tied modules, that only work with the specific minor
rev, so the driver shouldn't have even loaded. 

`disable-module amdgpu`

would work if the loader is loading it... but /etc/rc.conf loaded modules
override this.

`boot -s` would boot to single user, which won't run /etc/rc to load the
driver. You can mount -uw / and use vi to edit it out. You may also need to
mount /var.

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