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pve-kernel-lowlatency-qoup/patches/kernel/0063-x86-unwind-Rename-unwinder-config-options-to-CONFIG_.patch
Fabian Grünbichler e4cdf2a53e KPTI: add follow-up fixes
2018-01-08 10:25:09 +01:00

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From dcc61cf4d482d478979471795935733845fe757e Mon Sep 17 00:00:00 2001
From: Josh Poimboeuf <jpoimboe@redhat.com>
Date: Fri, 13 Oct 2017 15:02:00 -0500
Subject: [PATCH 063/241] x86/unwind: Rename unwinder config options to
'CONFIG_UNWINDER_*'
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
CVE-2017-5754
Rename the unwinder config options from:
CONFIG_ORC_UNWINDER
CONFIG_FRAME_POINTER_UNWINDER
CONFIG_GUESS_UNWINDER
to:
CONFIG_UNWINDER_ORC
CONFIG_UNWINDER_FRAME_POINTER
CONFIG_UNWINDER_GUESS
... in order to give them a more logical config namespace.
Suggested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/73972fc7e2762e91912c6b9584582703d6f1b8cc.1507924831.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
(cherry picked from commit 11af847446ed0d131cf24d16a7ef3d5ea7a49554)
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
(cherry picked from commit 27ab2a240a797b073ce63385b1d5db06e44fc3ae)
Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
---
Documentation/x86/orc-unwinder.txt | 2 +-
Makefile | 4 ++--
arch/x86/kernel/Makefile | 6 +++---
scripts/Makefile.build | 2 +-
arch/x86/include/asm/module.h | 2 +-
arch/x86/include/asm/unwind.h | 8 ++++----
include/asm-generic/vmlinux.lds.h | 2 +-
arch/x86/Kconfig | 2 +-
arch/x86/Kconfig.debug | 10 +++++-----
arch/x86/configs/tiny.config | 4 ++--
arch/x86/configs/x86_64_defconfig | 2 +-
lib/Kconfig.debug | 2 +-
12 files changed, 23 insertions(+), 23 deletions(-)
diff --git a/Documentation/x86/orc-unwinder.txt b/Documentation/x86/orc-unwinder.txt
index af0c9a4c65a6..cd4b29be29af 100644
--- a/Documentation/x86/orc-unwinder.txt
+++ b/Documentation/x86/orc-unwinder.txt
@@ -4,7 +4,7 @@ ORC unwinder
Overview
--------
-The kernel CONFIG_ORC_UNWINDER option enables the ORC unwinder, which is
+The kernel CONFIG_UNWINDER_ORC option enables the ORC unwinder, which is
similar in concept to a DWARF unwinder. The difference is that the
format of the ORC data is much simpler than DWARF, which in turn allows
the ORC unwinder to be much simpler and faster.
diff --git a/Makefile b/Makefile
index 490ce18685ea..b740e3dc9ff8 100644
--- a/Makefile
+++ b/Makefile
@@ -965,8 +965,8 @@ ifdef CONFIG_STACK_VALIDATION
ifeq ($(has_libelf),1)
objtool_target := tools/objtool FORCE
else
- ifdef CONFIG_ORC_UNWINDER
- $(error "Cannot generate ORC metadata for CONFIG_ORC_UNWINDER=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel")
+ ifdef CONFIG_UNWINDER_ORC
+ $(error "Cannot generate ORC metadata for CONFIG_UNWINDER_ORC=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel")
else
$(warning "Cannot use CONFIG_STACK_VALIDATION=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel")
endif
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index e2315aecc441..5bf0d5a473b4 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -125,9 +125,9 @@ obj-$(CONFIG_PERF_EVENTS) += perf_regs.o
obj-$(CONFIG_TRACING) += tracepoint.o
obj-$(CONFIG_SCHED_MC_PRIO) += itmt.o
-obj-$(CONFIG_ORC_UNWINDER) += unwind_orc.o
-obj-$(CONFIG_FRAME_POINTER_UNWINDER) += unwind_frame.o
-obj-$(CONFIG_GUESS_UNWINDER) += unwind_guess.o
+obj-$(CONFIG_UNWINDER_ORC) += unwind_orc.o
+obj-$(CONFIG_UNWINDER_FRAME_POINTER) += unwind_frame.o
+obj-$(CONFIG_UNWINDER_GUESS) += unwind_guess.o
###
# 64 bit specific files
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index ab2c8ef43cdb..436005392047 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -258,7 +258,7 @@ ifneq ($(SKIP_STACK_VALIDATION),1)
__objtool_obj := $(objtree)/tools/objtool/objtool
-objtool_args = $(if $(CONFIG_ORC_UNWINDER),orc generate,check)
+objtool_args = $(if $(CONFIG_UNWINDER_ORC),orc generate,check)
ifndef CONFIG_FRAME_POINTER
objtool_args += --no-fp
diff --git a/arch/x86/include/asm/module.h b/arch/x86/include/asm/module.h
index 9eb7c718aaf8..9f05a1002aa9 100644
--- a/arch/x86/include/asm/module.h
+++ b/arch/x86/include/asm/module.h
@@ -5,7 +5,7 @@
#include <asm/orc_types.h>
struct mod_arch_specific {
-#ifdef CONFIG_ORC_UNWINDER
+#ifdef CONFIG_UNWINDER_ORC
unsigned int num_orcs;
int *orc_unwind_ip;
struct orc_entry *orc_unwind;
diff --git a/arch/x86/include/asm/unwind.h b/arch/x86/include/asm/unwind.h
index e9f793e2df7a..35d67dc7b69f 100644
--- a/arch/x86/include/asm/unwind.h
+++ b/arch/x86/include/asm/unwind.h
@@ -12,11 +12,11 @@ struct unwind_state {
struct task_struct *task;
int graph_idx;
bool error;
-#if defined(CONFIG_ORC_UNWINDER)
+#if defined(CONFIG_UNWINDER_ORC)
bool signal, full_regs;
unsigned long sp, bp, ip;
struct pt_regs *regs;
-#elif defined(CONFIG_FRAME_POINTER_UNWINDER)
+#elif defined(CONFIG_UNWINDER_FRAME_POINTER)
bool got_irq;
unsigned long *bp, *orig_sp, ip;
struct pt_regs *regs;
@@ -50,7 +50,7 @@ void unwind_start(struct unwind_state *state, struct task_struct *task,
__unwind_start(state, task, regs, first_frame);
}
-#if defined(CONFIG_ORC_UNWINDER) || defined(CONFIG_FRAME_POINTER_UNWINDER)
+#if defined(CONFIG_UNWINDER_ORC) || defined(CONFIG_UNWINDER_FRAME_POINTER)
static inline struct pt_regs *unwind_get_entry_regs(struct unwind_state *state)
{
if (unwind_done(state))
@@ -65,7 +65,7 @@ static inline struct pt_regs *unwind_get_entry_regs(struct unwind_state *state)
}
#endif
-#ifdef CONFIG_ORC_UNWINDER
+#ifdef CONFIG_UNWINDER_ORC
void unwind_init(void);
void unwind_module_init(struct module *mod, void *orc_ip, size_t orc_ip_size,
void *orc, size_t orc_size);
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 9fdb54a95976..e71e42432360 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -686,7 +686,7 @@
#define BUG_TABLE
#endif
-#ifdef CONFIG_ORC_UNWINDER
+#ifdef CONFIG_UNWINDER_ORC
#define ORC_UNWIND_TABLE \
. = ALIGN(4); \
.orc_unwind_ip : AT(ADDR(.orc_unwind_ip) - LOAD_OFFSET) { \
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 3a0b8cb57caf..bf9f03740c30 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -168,7 +168,7 @@ config X86
select HAVE_PERF_REGS
select HAVE_PERF_USER_STACK_DUMP
select HAVE_REGS_AND_STACK_ACCESS_API
- select HAVE_RELIABLE_STACKTRACE if X86_64 && FRAME_POINTER_UNWINDER && STACK_VALIDATION
+ select HAVE_RELIABLE_STACKTRACE if X86_64 && UNWINDER_FRAME_POINTER && STACK_VALIDATION
select HAVE_STACK_VALIDATION if X86_64
select HAVE_SYSCALL_TRACEPOINTS
select HAVE_UNSTABLE_SCHED_CLOCK
diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug
index c441b5d65ec8..5435a943f894 100644
--- a/arch/x86/Kconfig.debug
+++ b/arch/x86/Kconfig.debug
@@ -358,13 +358,13 @@ config PUNIT_ATOM_DEBUG
choice
prompt "Choose kernel unwinder"
- default FRAME_POINTER_UNWINDER
+ default UNWINDER_FRAME_POINTER
---help---
This determines which method will be used for unwinding kernel stack
traces for panics, oopses, bugs, warnings, perf, /proc/<pid>/stack,
livepatch, lockdep, and more.
-config FRAME_POINTER_UNWINDER
+config UNWINDER_FRAME_POINTER
bool "Frame pointer unwinder"
select FRAME_POINTER
---help---
@@ -379,7 +379,7 @@ config FRAME_POINTER_UNWINDER
consistency model, as this is currently the only way to get a
reliable stack trace (CONFIG_HAVE_RELIABLE_STACKTRACE).
-config ORC_UNWINDER
+config UNWINDER_ORC
bool "ORC unwinder"
depends on X86_64
select STACK_VALIDATION
@@ -396,7 +396,7 @@ config ORC_UNWINDER
Enabling this option will increase the kernel's runtime memory usage
by roughly 2-4MB, depending on your kernel config.
-config GUESS_UNWINDER
+config UNWINDER_GUESS
bool "Guess unwinder"
depends on EXPERT
---help---
@@ -411,7 +411,7 @@ config GUESS_UNWINDER
endchoice
config FRAME_POINTER
- depends on !ORC_UNWINDER && !GUESS_UNWINDER
+ depends on !UNWINDER_ORC && !UNWINDER_GUESS
bool
endmenu
diff --git a/arch/x86/configs/tiny.config b/arch/x86/configs/tiny.config
index 550cd5012b73..66c9e2aab16c 100644
--- a/arch/x86/configs/tiny.config
+++ b/arch/x86/configs/tiny.config
@@ -1,5 +1,5 @@
CONFIG_NOHIGHMEM=y
# CONFIG_HIGHMEM4G is not set
# CONFIG_HIGHMEM64G is not set
-CONFIG_GUESS_UNWINDER=y
-# CONFIG_FRAME_POINTER_UNWINDER is not set
+CONFIG_UNWINDER_GUESS=y
+# CONFIG_UNWINDER_FRAME_POINTER is not set
diff --git a/arch/x86/configs/x86_64_defconfig b/arch/x86/configs/x86_64_defconfig
index eb65c248708d..e32fc1f274d8 100644
--- a/arch/x86/configs/x86_64_defconfig
+++ b/arch/x86/configs/x86_64_defconfig
@@ -299,7 +299,7 @@ CONFIG_DEBUG_STACKOVERFLOW=y
# CONFIG_DEBUG_RODATA_TEST is not set
CONFIG_DEBUG_BOOT_PARAMS=y
CONFIG_OPTIMIZE_INLINING=y
-CONFIG_ORC_UNWINDER=y
+CONFIG_UNWINDER_ORC=y
CONFIG_SECURITY=y
CONFIG_SECURITY_NETWORK=y
CONFIG_SECURITY_SELINUX=y
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 0b4d1b3880b0..4f6ca5f60f7e 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -375,7 +375,7 @@ config STACK_VALIDATION
that runtime stack traces are more reliable.
This is also a prerequisite for generation of ORC unwind data, which
- is needed for CONFIG_ORC_UNWINDER.
+ is needed for CONFIG_UNWINDER_ORC.
For more information, see
tools/objtool/Documentation/stack-validation.txt.
--
2.14.2
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