[Bug 254661] Debug registers seem to be inherited in forked processes

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=254661

--- Comment #6 from commit-hook at FreeBSD.org ---
A commit in branch stable/13 references this bug:

URL:
https://cgit.FreeBSD.org/src/commit/?id=17b0a38d96feb77d4b019ab9108b2c5050273823

commit 17b0a38d96feb77d4b019ab9108b2c5050273823
Author:     Mitchell Horne <mhorne at FreeBSD.org>
AuthorDate: 2021-04-07 19:23:46 +0000
Commit:     Mitchell Horne <mhorne at FreeBSD.org>
CommitDate: 2021-04-16 13:47:32 +0000

    arm64: clear debug register state on fork

    Following the analogous change for amd64 and i386 in 8223717ce62c,
    ensure that new processes start with these registers inactive.

    PR:             254661
    Reported by:    MichaŠGórny
    Reviewed by:    kib, emaste
    Sponsored by:   The FreeBSD Foundation

    (cherry picked from commit 1fd001db9c330f133708f3c04c8852f8b07cfed9)

 sys/arm64/arm64/vm_machdep.c | 3 +++
 1 file changed, 3 insertions(+)

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