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Date:      Thu, 10 Dec 2020 20:00:32 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 251736] [panic] memcpy_erms general protection fault on AMD Zen 3 (Ryzen 5000 series)
Message-ID:  <bug-251736-227-jHzQ9wdIBp@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-251736-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-251736-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D251736

--- Comment #5 from Konstantin Belousov <kib@FreeBSD.org> ---
(In reply to Greg V from comment #4)
Can you look at the abd_copy_off_cb() frame and infer the arguments used for
call
to memcpy() ?
%rdi 0x1020004000200a0 which is non-canonical address is clearly the issue,
and I do not believe that memcpy asm can result in such mangling.

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