patches/kernel/0053-x86-head-Remove-confusing-comment.patch

   1 From 109bbd8c905806e929b67ca0b2eaf57ff88f10c1 Mon Sep 17 00:00:00 2001
   2 From: Josh Poimboeuf <jpoimboe@redhat.com>
   3 Date: Mon, 18 Sep 2017 21:43:31 -0500
   4 Subject: [PATCH 053/241] x86/head: Remove confusing comment
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
   7 Content-Transfer-Encoding: 8bit
   8
   9 CVE-2017-5754
  10
  11 This comment is actively wrong and confusing.  It refers to the
  12 registers' stack offsets after the pt_regs has been constructed on the
  13 stack, but this code is *before* that.
  14
  15 At this point the stack just has the standard iret frame, for which no
  16 comment should be needed.
  17
  18 Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
  19 Cc: Andy Lutomirski <luto@kernel.org>
  20 Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
  21 Cc: Jiri Slaby <jslaby@suse.cz>
  22 Cc: Juergen Gross <jgross@suse.com>
  23 Cc: Linus Torvalds <torvalds@linux-foundation.org>
  24 Cc: Peter Zijlstra <peterz@infradead.org>
  25 Cc: Thomas Gleixner <tglx@linutronix.de>
  26 Link: http://lkml.kernel.org/r/a3c267b770fc56c9b86df9c11c552848248aace2.1505764066.git.jpoimboe@redhat.com
  27 Signed-off-by: Ingo Molnar <mingo@kernel.org>
  28 (cherry picked from commit 17270717e80de33a884ad328fea5f407d87f6d6a)
  29 Signed-off-by: Andy Whitcroft <apw@canonical.com>
  30 Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
  31 (cherry picked from commit 49187e0108184688304260a75d29b789f36f3a2b)
  32 Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
  33 ---
  34  arch/x86/kernel/head_64.S | 4 ----
  35  1 file changed, 4 deletions(-)
  36
  37 diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S
  38 index 6225550883df..627c798b2f15 100644
  39 --- a/arch/x86/kernel/head_64.S
  40 +++ b/arch/x86/kernel/head_64.S
  41 @@ -254,10 +254,6 @@ bad_address:
  42
  43         __INIT
  44  ENTRY(early_idt_handler_array)
  45 -       # 104(%rsp) %rflags
  46 -       #  96(%rsp) %cs
  47 -       #  88(%rsp) %rip
  48 -       #  80(%rsp) error code
  49         i = 0
  50         .rept NUM_EXCEPTION_VECTORS
  51         .ifeq (EXCEPTION_ERRCODE_MASK >> i) & 1
  52 --
  53 2.14.2
  54