Re: port-amd64/54257 (panic in invlpg)

To: port-amd64-maintainer%netbsd.org@localhost,netbsd-bugs%netbsd.org@localhost,gnats-admin%netbsd.org@localhost,maxv%NetBSD.org@localhost,coypu%sdf.org@localhost
Subject: Re: port-amd64/54257 (panic in invlpg)
From: maxv%NetBSD.org@localhost
Date: Sat, 1 Jun 2019 08:18:41 +0000 (UTC)

Synopsis: panic in invlpg

State-Changed-From-To: open->feedback
State-Changed-By: maxv%NetBSD.org@localhost
State-Changed-When: Sat, 01 Jun 2019 08:18:40 +0000
State-Changed-Why:
I could reproduce the problem on my machine, and it should now be fixed. Please
confirm.

Basically, there was a bug in pmap_write_protect(), and PCID made it visible;
before PCID, invlpg would silently ignore the incorrect VA.

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