[Bug 265852] qat: kernel crash using krb5p with nfs

From: <bugzilla-noreply_at_freebsd.org>
Date: Mon, 15 Aug 2022 09:35:34 UTC 
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=265852

            Bug ID: 265852
           Summary: qat: kernel crash using krb5p with nfs
           Product: Base System
           Version: 13.1-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: zaltys@natrix.lt

Created attachment 235917
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=235917&action=edit
Backtrace

TruesNAS Core 13 (FreeBSD 13.1 underneath) server with Intel Atom C3558 having
integrated QAT (C3000). Files are being served via nfsd v4 with krb5p
(aes128-cts-hmac-sha1-96).

If qat is loaded (using qat_load=YES and qat_c3xxxfw_load=YES), and it is
attempted to download a file via nfs, kernel crashes with "Fatal trap 12: page
fault while in kernel mode". Directory listing works fine though.

Backtrace is attached.

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