[Bug 229222] 11.2-PRERELEASE panic-General Protection Fault, aesni_encrypt_cbc implicated

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=229222

--- Comment #25 from commit-hook at freebsd.org ---
A commit references this bug:

Author: kib
Date: Mon Jun 25 11:29:04 UTC 2018
New revision: 335635
URL: https://svnweb.freebsd.org/changeset/base/335635

Log:
  Do not leave stray qword on top of stack for interrupts and exceptions
  without error code.  Doing so it mis-aligned the stack.

  Since the only consumer of the SSE instructions with the alignment
  requirements is AES-NI module, and since the FPU context cannot be
  accessed in interrupts, the only situation where the alignment matter
  are the compat32 syscalls, as reported in the PR.

  PR:   229222
  Reported and tested by:        dewayne at heuristicsystems.com.au
  Sponsored by: The FreeBSD Foundation
  MFC after:    1 week

Changes:
  head/sys/amd64/include/asmacros.h

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