r187880 causes fatal trap 30 when unloading drivers

[Andrew Gallatin]

Paul B. Mahol wrote:

> Fatal trap 30: reserved (unknown) fault while in kernel modecpuid = 1;

<...>

> The only workaroud is to disable SMP.

Try backing out the commit in question and see if that helps.
I used the attached patch on yesterday's -current.

Drew
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