[Bug 259218] Fatal trap 12: page fault while in kernel mode

From: <bugzilla-noreply_at_freebsd.org>
Date: Fri, 22 Oct 2021 23:32:25 UTC

--- Comment #17 from commit-hook@FreeBSD.org ---
A commit in branch main references this bug:


commit 362c6d8dec6dfbedc5717e45769042279a1dd3df
Author:     Konstantin Belousov <kib@FreeBSD.org>
AuthorDate: 2021-10-20 22:42:05 +0000
Commit:     Konstantin Belousov <kib@FreeBSD.org>
CommitDate: 2021-10-22 23:31:16 +0000

    nehemiah: manually assemble xstore(-rng)

    It seems that clang IAS erronously adds repz prefix which should not be
    there.  Cpu would try to store around %ecx bytes of random, while we
    only expect a word.

    PR:     259218
    Reported and tested by:  Dennis Clarke <dclarke@blastwave.org>
    Sponsored by:   The FreeBSD Foundation
    MFC after:      1 week

 sys/dev/random/nehemiah.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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