[Bug 258932] panic: vm_page_free_prep: freeing mapped page

From: <bugzilla-noreply_at_freebsd.org>
Date: Mon, 04 Oct 2021 20:12:39 UTC

--- Comment #4 from Bryan Drewery <bdrewery@FreeBSD.org> ---
(In reply to Mark Johnston from comment #3)

> But it's hard to tell from ddb which process owns that pmap.  I think a kernel dump is needed to diagnose further, though then we will lose the user PTPs.

Is there a feasible script we could write to determine that? If we procvm every
proc and do some parsing... I'd hate to lose any relevant information here. I
can do the data gathering and parsing if you think it would be useful before

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