Minor PKRU bug?

From	Andy Lutomirski <luto@amacapital.net>
Newsgroups	linux.kernel
Subject	Minor PKRU bug?
Date	2016-07-09 23:30 +0200
Message-ID	<rT7YZ-8fP-15@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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is_prefetch in arch/x86/mm/fault.c can be called on a user address
that's not readable due to PKRU.  This could break it.  You might need
to add a get_user_exec or similar.

--Andy

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Minor PKRU bug? Andy Lutomirski <luto@amacapital.net> - 2016-07-09 23:30 +0200
  Re: Minor PKRU bug? Dave Hansen <dave.hansen@linux.intel.com> - 2016-07-12 17:40 +0200
    Re: Minor PKRU bug? "H. Peter Anvin" <hpa@zytor.com> - 2016-07-13 01:00 +0200
      Re: Minor PKRU bug? Dave Hansen <dave.hansen@linux.intel.com> - 2016-07-13 01:10 +0200
      Re: Minor PKRU bug? Andy Lutomirski <luto@amacapital.net> - 2016-07-13 01:10 +0200
        Re: Minor PKRU bug? Dave Hansen <dave.hansen@linux.intel.com> - 2016-07-21 23:40 +0200
          Re: Minor PKRU bug? Andy Lutomirski <luto@amacapital.net> - 2016-07-21 23:50 +0200
            Re: Minor PKRU bug? "H. Peter Anvin" <hpa@zytor.com> - 2016-07-22 00:00 +0200
              Re: Minor PKRU bug? Dave Hansen <dave.hansen@linux.intel.com> - 2016-07-22 00:30 +0200

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