633c5ed17f
this causes kernel OOPS and upstream is unresponsive about it. see https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1726519
101 lines
3.7 KiB
Diff
101 lines
3.7 KiB
Diff
From b6ebe31d563b5fade20c8516eaff92ab3122f1b8 Mon Sep 17 00:00:00 2001
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From: Josh Poimboeuf <jpoimboe@redhat.com>
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Date: Mon, 6 Nov 2017 07:21:51 -0600
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Subject: [PATCH 130/242] objtool: Move kernel headers/code sync check to a
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script
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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CVE-2017-5754
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Replace the nasty diff checks in the objtool Makefile with a clean bash
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script, and make the warnings more specific.
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Heavily inspired by tools/perf/check-headers.sh.
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Suggested-by: Ingo Molnar <mingo@kernel.org>
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Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
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Cc: Linus Torvalds <torvalds@linux-foundation.org>
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Cc: Peter Zijlstra <peterz@infradead.org>
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Cc: Thomas Gleixner <tglx@linutronix.de>
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Link: http://lkml.kernel.org/r/ab015f15ccd8c0c6008493c3c6ee3d495eaf2927.1509974346.git.jpoimboe@redhat.com
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Signed-off-by: Ingo Molnar <mingo@kernel.org>
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(cherry picked from commit a89ec413c623eb2870180bcad678046bf7bc8465)
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Signed-off-by: Andy Whitcroft <apw@canonical.com>
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Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
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(cherry picked from commit 4e72ce95a057e744b8d580239e2d8afa51118d82)
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Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
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---
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tools/objtool/Makefile | 16 +---------------
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tools/objtool/sync-check.sh | 29 +++++++++++++++++++++++++++++
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2 files changed, 30 insertions(+), 15 deletions(-)
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create mode 100755 tools/objtool/sync-check.sh
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diff --git a/tools/objtool/Makefile b/tools/objtool/Makefile
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index f95f48e445c3..90b0241f3ccc 100644
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--- a/tools/objtool/Makefile
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+++ b/tools/objtool/Makefile
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@@ -41,22 +41,8 @@ include $(srctree)/tools/build/Makefile.include
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$(OBJTOOL_IN): fixdep FORCE
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@$(MAKE) $(build)=objtool
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-# Busybox's diff doesn't have -I, avoid warning in that case
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-#
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$(OBJTOOL): $(LIBSUBCMD) $(OBJTOOL_IN)
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- @(diff -I 2>&1 | grep -q 'option requires an argument' && \
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- test -d ../../kernel -a -d ../../tools -a -d ../objtool && (( \
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- diff arch/x86/lib/insn.c ../../arch/x86/lib/insn.c >/dev/null && \
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- diff arch/x86/lib/inat.c ../../arch/x86/lib/inat.c >/dev/null && \
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- diff arch/x86/lib/x86-opcode-map.txt ../../arch/x86/lib/x86-opcode-map.txt >/dev/null && \
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- diff arch/x86/tools/gen-insn-attr-x86.awk ../../arch/x86/tools/gen-insn-attr-x86.awk >/dev/null && \
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- diff arch/x86/include/asm/insn.h ../../arch/x86/include/asm/insn.h >/dev/null && \
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- diff arch/x86/include/asm/inat.h ../../arch/x86/include/asm/inat.h >/dev/null && \
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- diff arch/x86/include/asm/inat_types.h ../../arch/x86/include/asm/inat_types.h >/dev/null) \
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- || echo "warning: objtool: x86 instruction decoder differs from kernel" >&2 )) || true
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- @(test -d ../../kernel -a -d ../../tools -a -d ../objtool && (( \
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- diff ../../arch/x86/include/asm/orc_types.h arch/x86/include/asm/orc_types.h >/dev/null) \
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- || echo "warning: objtool: orc_types.h differs from kernel" >&2 )) || true
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+ @./sync-check.sh
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$(QUIET_LINK)$(CC) $(OBJTOOL_IN) $(LDFLAGS) -o $@
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diff --git a/tools/objtool/sync-check.sh b/tools/objtool/sync-check.sh
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new file mode 100755
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index 000000000000..1470e74e9d66
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--- /dev/null
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+++ b/tools/objtool/sync-check.sh
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@@ -0,0 +1,29 @@
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+#!/bin/sh
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+# SPDX-License-Identifier: GPL-2.0
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+
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+FILES='
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+arch/x86/lib/insn.c
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+arch/x86/lib/inat.c
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+arch/x86/lib/x86-opcode-map.txt
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+arch/x86/tools/gen-insn-attr-x86.awk
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+arch/x86/include/asm/insn.h
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+arch/x86/include/asm/inat.h
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+arch/x86/include/asm/inat_types.h
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+arch/x86/include/asm/orc_types.h
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+'
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+
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+check()
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+{
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+ local file=$1
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+
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+ diff $file ../../$file > /dev/null ||
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+ echo "Warning: synced file at 'tools/objtool/$file' differs from latest kernel version at '$file'"
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+}
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+
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+if [ ! -d ../../kernel ] || [ ! -d ../../tools ] || [ ! -d ../objtool ]; then
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+ exit 0
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+fi
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+
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+for i in $FILES; do
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+ check $i
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+done
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--
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2.14.2
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