[Bug 287165] drm/pseudofs panic in radeonkms.ko

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=287165

--- Comment #19 from Steve Kargl <kargl@FreeBSD.org> ---
(In reply to Jean-Sébastien Pédron from comment #17)

In the "good" case where I can load radeonkms.ko
and use startx to bring up my desktop, the driver
is only initialized **once**.

In the "bad" case, after loading radeonkms.ko, the
use of startx causes a panic.  The panic appears to
be due to an attempt to initialize the driver a
second time.

kib's patch addresses the panic, but does not address
why the initialization of the driver is occurring
**twice**.  I reduced the range of commits to the
range you quoted.  Unfortunately, slow hardware and
keeping world/kernel in sync is taking a long time
to find the commit that is causing the actual
problem.

Look for the directory kargl/drm on freefall for
crash dump

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