150 lines
5.0 KiB
Diff
150 lines
5.0 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Uros Bizjak <ubizjak@gmail.com>
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Date: Wed, 6 Sep 2017 17:18:08 +0200
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Subject: [PATCH] x86/asm: Remove unnecessary \n\t in front of CC_SET() from
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asm templates
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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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There is no need for \n\t in front of CC_SET(), as the macro already includes these two.
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Signed-off-by: Uros Bizjak <ubizjak@gmail.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/20170906151808.5634-1-ubizjak@gmail.com
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Signed-off-by: Ingo Molnar <mingo@kernel.org>
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(backported from commit 3c52b5c64326d9dcfee4e10611c53ec1b1b20675)
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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 1c3f29ec5586e3aecfde2c6f83b8786e1aecd9ac)
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Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
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---
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arch/x86/include/asm/archrandom.h | 8 ++++----
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arch/x86/include/asm/bitops.h | 10 +++++-----
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arch/x86/include/asm/percpu.h | 2 +-
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arch/x86/include/asm/rmwcc.h | 2 +-
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4 files changed, 11 insertions(+), 11 deletions(-)
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diff --git a/arch/x86/include/asm/archrandom.h b/arch/x86/include/asm/archrandom.h
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index 5b0579abb398..3ac991d81e74 100644
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--- a/arch/x86/include/asm/archrandom.h
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+++ b/arch/x86/include/asm/archrandom.h
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@@ -45,7 +45,7 @@ static inline bool rdrand_long(unsigned long *v)
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bool ok;
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unsigned int retry = RDRAND_RETRY_LOOPS;
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do {
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- asm volatile(RDRAND_LONG "\n\t"
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+ asm volatile(RDRAND_LONG
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CC_SET(c)
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: CC_OUT(c) (ok), "=a" (*v));
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if (ok)
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@@ -59,7 +59,7 @@ static inline bool rdrand_int(unsigned int *v)
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bool ok;
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unsigned int retry = RDRAND_RETRY_LOOPS;
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do {
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- asm volatile(RDRAND_INT "\n\t"
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+ asm volatile(RDRAND_INT
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CC_SET(c)
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: CC_OUT(c) (ok), "=a" (*v));
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if (ok)
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@@ -71,7 +71,7 @@ static inline bool rdrand_int(unsigned int *v)
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static inline bool rdseed_long(unsigned long *v)
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{
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bool ok;
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- asm volatile(RDSEED_LONG "\n\t"
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+ asm volatile(RDSEED_LONG
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CC_SET(c)
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: CC_OUT(c) (ok), "=a" (*v));
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return ok;
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@@ -80,7 +80,7 @@ static inline bool rdseed_long(unsigned long *v)
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static inline bool rdseed_int(unsigned int *v)
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{
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bool ok;
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- asm volatile(RDSEED_INT "\n\t"
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+ asm volatile(RDSEED_INT
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CC_SET(c)
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: CC_OUT(c) (ok), "=a" (*v));
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return ok;
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diff --git a/arch/x86/include/asm/bitops.h b/arch/x86/include/asm/bitops.h
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index 854022772c5b..8cee8db6dffb 100644
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--- a/arch/x86/include/asm/bitops.h
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+++ b/arch/x86/include/asm/bitops.h
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@@ -142,7 +142,7 @@ static __always_inline void __clear_bit(long nr, volatile unsigned long *addr)
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static __always_inline bool clear_bit_unlock_is_negative_byte(long nr, volatile unsigned long *addr)
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{
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bool negative;
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- asm volatile(LOCK_PREFIX "andb %2,%1\n\t"
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+ asm volatile(LOCK_PREFIX "andb %2,%1"
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CC_SET(s)
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: CC_OUT(s) (negative), ADDR
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: "ir" ((char) ~(1 << nr)) : "memory");
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@@ -245,7 +245,7 @@ static __always_inline bool __test_and_set_bit(long nr, volatile unsigned long *
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{
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bool oldbit;
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- asm("bts %2,%1\n\t"
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+ asm("bts %2,%1"
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CC_SET(c)
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: CC_OUT(c) (oldbit), ADDR
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: "Ir" (nr));
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@@ -285,7 +285,7 @@ static __always_inline bool __test_and_clear_bit(long nr, volatile unsigned long
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{
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bool oldbit;
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- asm volatile("btr %2,%1\n\t"
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+ asm volatile("btr %2,%1"
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CC_SET(c)
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: CC_OUT(c) (oldbit), ADDR
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: "Ir" (nr));
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@@ -297,7 +297,7 @@ static __always_inline bool __test_and_change_bit(long nr, volatile unsigned lon
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{
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bool oldbit;
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- asm volatile("btc %2,%1\n\t"
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+ asm volatile("btc %2,%1"
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CC_SET(c)
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: CC_OUT(c) (oldbit), ADDR
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: "Ir" (nr) : "memory");
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@@ -328,7 +328,7 @@ static __always_inline bool variable_test_bit(long nr, volatile const unsigned l
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{
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bool oldbit;
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- asm volatile("bt %2,%1\n\t"
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+ asm volatile("bt %2,%1"
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CC_SET(c)
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: CC_OUT(c) (oldbit)
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: "m" (*(unsigned long *)addr), "Ir" (nr));
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diff --git a/arch/x86/include/asm/percpu.h b/arch/x86/include/asm/percpu.h
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index 9fa03604b2b3..b21a475fd7ed 100644
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--- a/arch/x86/include/asm/percpu.h
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+++ b/arch/x86/include/asm/percpu.h
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@@ -525,7 +525,7 @@ static inline bool x86_this_cpu_variable_test_bit(int nr,
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{
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bool oldbit;
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- asm volatile("bt "__percpu_arg(2)",%1\n\t"
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+ asm volatile("bt "__percpu_arg(2)",%1"
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CC_SET(c)
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: CC_OUT(c) (oldbit)
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: "m" (*(unsigned long __percpu *)addr), "Ir" (nr));
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diff --git a/arch/x86/include/asm/rmwcc.h b/arch/x86/include/asm/rmwcc.h
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index 661dd305694a..dd7ba5aa8dca 100644
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--- a/arch/x86/include/asm/rmwcc.h
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+++ b/arch/x86/include/asm/rmwcc.h
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@@ -28,7 +28,7 @@ cc_label: \
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#define __GEN_RMWcc(fullop, var, cc, ...) \
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do { \
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bool c; \
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- asm volatile (fullop ";" CC_SET(cc) \
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+ asm volatile (fullop CC_SET(cc) \
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: "+m" (var), CC_OUT(cc) (c) \
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: __VA_ARGS__ : "memory"); \
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return c; \
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--
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2.14.2
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