[Precise][CVE-2013-6282][PATCH 1/2] ARM: 7301/1: Rename the T() macro to TUSER() to avoid namespace conflicts
Luis Henriques
luis.henriques at canonical.com
Thu Nov 28 16:01:52 UTC 2013
From: Catalin Marinas <catalin.marinas at arm.com>
CVE-2013-6282
BugLink: https://bugs.launchpad.net/bugs/1254901
This macro is used to generate unprivileged accesses (LDRT/STRT) to user
space.
Signed-off-by: Catalin Marinas <catalin.marinas at arm.com>
Acked-by: Nicolas Pitre <nico at linaro.org>
Signed-off-by: Russell King <rmk+kernel at arm.linux.org.uk>
(cherry picked from commit 4e7682d077d693e34a993ae7a2831b522930ebcb)
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
arch/arm/include/asm/assembler.h | 4 +-
arch/arm/include/asm/domain.h | 8 ++--
arch/arm/include/asm/futex.h | 8 ++--
arch/arm/include/asm/uaccess.h | 16 ++++----
arch/arm/lib/getuser.S | 12 +++---
arch/arm/lib/putuser.S | 28 +++++++-------
arch/arm/lib/uaccess.S | 82 ++++++++++++++++++++--------------------
7 files changed, 79 insertions(+), 79 deletions(-)
diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h
index 7bb8bf9..fed335e 100644
--- a/arch/arm/include/asm/assembler.h
+++ b/arch/arm/include/asm/assembler.h
@@ -231,7 +231,7 @@
*/
#ifdef CONFIG_THUMB2_KERNEL
- .macro usraccoff, instr, reg, ptr, inc, off, cond, abort, t=T()
+ .macro usraccoff, instr, reg, ptr, inc, off, cond, abort, t=TUSER()
9999:
.if \inc == 1
\instr\cond\()b\()\t\().w \reg, [\ptr, #\off]
@@ -271,7 +271,7 @@
#else /* !CONFIG_THUMB2_KERNEL */
- .macro usracc, instr, reg, ptr, inc, cond, rept, abort, t=T()
+ .macro usracc, instr, reg, ptr, inc, cond, rept, abort, t=TUSER()
.rept \rept
9999:
.if \inc == 1
diff --git a/arch/arm/include/asm/domain.h b/arch/arm/include/asm/domain.h
index af18cea..b5dc173 100644
--- a/arch/arm/include/asm/domain.h
+++ b/arch/arm/include/asm/domain.h
@@ -83,9 +83,9 @@
* instructions (inline assembly)
*/
#ifdef CONFIG_CPU_USE_DOMAINS
-#define T(instr) #instr "t"
+#define TUSER(instr) #instr "t"
#else
-#define T(instr) #instr
+#define TUSER(instr) #instr
#endif
#else /* __ASSEMBLY__ */
@@ -95,9 +95,9 @@
* instructions
*/
#ifdef CONFIG_CPU_USE_DOMAINS
-#define T(instr) instr ## t
+#define TUSER(instr) instr ## t
#else
-#define T(instr) instr
+#define TUSER(instr) instr
#endif
#endif /* __ASSEMBLY__ */
diff --git a/arch/arm/include/asm/futex.h b/arch/arm/include/asm/futex.h
index 253cc86..7be5469 100644
--- a/arch/arm/include/asm/futex.h
+++ b/arch/arm/include/asm/futex.h
@@ -75,9 +75,9 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
#define __futex_atomic_op(insn, ret, oldval, tmp, uaddr, oparg) \
__asm__ __volatile__( \
- "1: " T(ldr) " %1, [%3]\n" \
+ "1: " TUSER(ldr) " %1, [%3]\n" \
" " insn "\n" \
- "2: " T(str) " %0, [%3]\n" \
+ "2: " TUSER(str) " %0, [%3]\n" \
" mov %0, #0\n" \
__futex_atomic_ex_table("%5") \
: "=&r" (ret), "=&r" (oldval), "=&r" (tmp) \
@@ -95,10 +95,10 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
return -EFAULT;
__asm__ __volatile__("@futex_atomic_cmpxchg_inatomic\n"
- "1: " T(ldr) " %1, [%4]\n"
+ "1: " TUSER(ldr) " %1, [%4]\n"
" teq %1, %2\n"
" it eq @ explicit IT needed for the 2b label\n"
- "2: " T(streq) " %3, [%4]\n"
+ "2: " TUSER(streq) " %3, [%4]\n"
__futex_atomic_ex_table("%5")
: "+r" (ret), "=&r" (val)
: "r" (oldval), "r" (newval), "r" (uaddr), "Ir" (-EFAULT)
diff --git a/arch/arm/include/asm/uaccess.h b/arch/arm/include/asm/uaccess.h
index b293616..2958976 100644
--- a/arch/arm/include/asm/uaccess.h
+++ b/arch/arm/include/asm/uaccess.h
@@ -227,7 +227,7 @@ do { \
#define __get_user_asm_byte(x,addr,err) \
__asm__ __volatile__( \
- "1: " T(ldrb) " %1,[%2],#0\n" \
+ "1: " TUSER(ldrb) " %1,[%2],#0\n" \
"2:\n" \
" .pushsection .fixup,\"ax\"\n" \
" .align 2\n" \
@@ -263,7 +263,7 @@ do { \
#define __get_user_asm_word(x,addr,err) \
__asm__ __volatile__( \
- "1: " T(ldr) " %1,[%2],#0\n" \
+ "1: " TUSER(ldr) " %1,[%2],#0\n" \
"2:\n" \
" .pushsection .fixup,\"ax\"\n" \
" .align 2\n" \
@@ -308,7 +308,7 @@ do { \
#define __put_user_asm_byte(x,__pu_addr,err) \
__asm__ __volatile__( \
- "1: " T(strb) " %1,[%2],#0\n" \
+ "1: " TUSER(strb) " %1,[%2],#0\n" \
"2:\n" \
" .pushsection .fixup,\"ax\"\n" \
" .align 2\n" \
@@ -341,7 +341,7 @@ do { \
#define __put_user_asm_word(x,__pu_addr,err) \
__asm__ __volatile__( \
- "1: " T(str) " %1,[%2],#0\n" \
+ "1: " TUSER(str) " %1,[%2],#0\n" \
"2:\n" \
" .pushsection .fixup,\"ax\"\n" \
" .align 2\n" \
@@ -366,10 +366,10 @@ do { \
#define __put_user_asm_dword(x,__pu_addr,err) \
__asm__ __volatile__( \
- ARM( "1: " T(str) " " __reg_oper1 ", [%1], #4\n" ) \
- ARM( "2: " T(str) " " __reg_oper0 ", [%1]\n" ) \
- THUMB( "1: " T(str) " " __reg_oper1 ", [%1]\n" ) \
- THUMB( "2: " T(str) " " __reg_oper0 ", [%1, #4]\n" ) \
+ ARM( "1: " TUSER(str) " " __reg_oper1 ", [%1], #4\n" ) \
+ ARM( "2: " TUSER(str) " " __reg_oper0 ", [%1]\n" ) \
+ THUMB( "1: " TUSER(str) " " __reg_oper1 ", [%1]\n" ) \
+ THUMB( "2: " TUSER(str) " " __reg_oper0 ", [%1, #4]\n" ) \
"3:\n" \
" .pushsection .fixup,\"ax\"\n" \
" .align 2\n" \
diff --git a/arch/arm/lib/getuser.S b/arch/arm/lib/getuser.S
index 1b049cd..11093a7 100644
--- a/arch/arm/lib/getuser.S
+++ b/arch/arm/lib/getuser.S
@@ -31,18 +31,18 @@
#include <asm/domain.h>
ENTRY(__get_user_1)
-1: T(ldrb) r2, [r0]
+1: TUSER(ldrb) r2, [r0]
mov r0, #0
mov pc, lr
ENDPROC(__get_user_1)
ENTRY(__get_user_2)
#ifdef CONFIG_THUMB2_KERNEL
-2: T(ldrb) r2, [r0]
-3: T(ldrb) r3, [r0, #1]
+2: TUSER(ldrb) r2, [r0]
+3: TUSER(ldrb) r3, [r0, #1]
#else
-2: T(ldrb) r2, [r0], #1
-3: T(ldrb) r3, [r0]
+2: TUSER(ldrb) r2, [r0], #1
+3: TUSER(ldrb) r3, [r0]
#endif
#ifndef __ARMEB__
orr r2, r2, r3, lsl #8
@@ -54,7 +54,7 @@ ENTRY(__get_user_2)
ENDPROC(__get_user_2)
ENTRY(__get_user_4)
-4: T(ldr) r2, [r0]
+4: TUSER(ldr) r2, [r0]
mov r0, #0
mov pc, lr
ENDPROC(__get_user_4)
diff --git a/arch/arm/lib/putuser.S b/arch/arm/lib/putuser.S
index c023fc1..7db2599 100644
--- a/arch/arm/lib/putuser.S
+++ b/arch/arm/lib/putuser.S
@@ -31,7 +31,7 @@
#include <asm/domain.h>
ENTRY(__put_user_1)
-1: T(strb) r2, [r0]
+1: TUSER(strb) r2, [r0]
mov r0, #0
mov pc, lr
ENDPROC(__put_user_1)
@@ -40,19 +40,19 @@ ENTRY(__put_user_2)
mov ip, r2, lsr #8
#ifdef CONFIG_THUMB2_KERNEL
#ifndef __ARMEB__
-2: T(strb) r2, [r0]
-3: T(strb) ip, [r0, #1]
+2: TUSER(strb) r2, [r0]
+3: TUSER(strb) ip, [r0, #1]
#else
-2: T(strb) ip, [r0]
-3: T(strb) r2, [r0, #1]
+2: TUSER(strb) ip, [r0]
+3: TUSER(strb) r2, [r0, #1]
#endif
#else /* !CONFIG_THUMB2_KERNEL */
#ifndef __ARMEB__
-2: T(strb) r2, [r0], #1
-3: T(strb) ip, [r0]
+2: TUSER(strb) r2, [r0], #1
+3: TUSER(strb) ip, [r0]
#else
-2: T(strb) ip, [r0], #1
-3: T(strb) r2, [r0]
+2: TUSER(strb) ip, [r0], #1
+3: TUSER(strb) r2, [r0]
#endif
#endif /* CONFIG_THUMB2_KERNEL */
mov r0, #0
@@ -60,18 +60,18 @@ ENTRY(__put_user_2)
ENDPROC(__put_user_2)
ENTRY(__put_user_4)
-4: T(str) r2, [r0]
+4: TUSER(str) r2, [r0]
mov r0, #0
mov pc, lr
ENDPROC(__put_user_4)
ENTRY(__put_user_8)
#ifdef CONFIG_THUMB2_KERNEL
-5: T(str) r2, [r0]
-6: T(str) r3, [r0, #4]
+5: TUSER(str) r2, [r0]
+6: TUSER(str) r3, [r0, #4]
#else
-5: T(str) r2, [r0], #4
-6: T(str) r3, [r0]
+5: TUSER(str) r2, [r0], #4
+6: TUSER(str) r3, [r0]
#endif
mov r0, #0
mov pc, lr
diff --git a/arch/arm/lib/uaccess.S b/arch/arm/lib/uaccess.S
index d0ece2a..5c908b1 100644
--- a/arch/arm/lib/uaccess.S
+++ b/arch/arm/lib/uaccess.S
@@ -32,11 +32,11 @@
rsb ip, ip, #4
cmp ip, #2
ldrb r3, [r1], #1
-USER( T(strb) r3, [r0], #1) @ May fault
+USER( TUSER( strb) r3, [r0], #1) @ May fault
ldrgeb r3, [r1], #1
-USER( T(strgeb) r3, [r0], #1) @ May fault
+USER( TUSER( strgeb) r3, [r0], #1) @ May fault
ldrgtb r3, [r1], #1
-USER( T(strgtb) r3, [r0], #1) @ May fault
+USER( TUSER( strgtb) r3, [r0], #1) @ May fault
sub r2, r2, ip
b .Lc2u_dest_aligned
@@ -59,7 +59,7 @@ ENTRY(__copy_to_user)
addmi ip, r2, #4
bmi .Lc2u_0nowords
ldr r3, [r1], #4
-USER( T(str) r3, [r0], #4) @ May fault
+USER( TUSER( str) r3, [r0], #4) @ May fault
mov ip, r0, lsl #32 - PAGE_SHIFT @ On each page, use a ld/st??t instruction
rsb ip, ip, #0
movs ip, ip, lsr #32 - PAGE_SHIFT
@@ -88,18 +88,18 @@ USER( T(str) r3, [r0], #4) @ May fault
stmneia r0!, {r3 - r4} @ Shouldnt fault
tst ip, #4
ldrne r3, [r1], #4
- T(strne) r3, [r0], #4 @ Shouldnt fault
+ TUSER( strne) r3, [r0], #4 @ Shouldnt fault
ands ip, ip, #3
beq .Lc2u_0fupi
.Lc2u_0nowords: teq ip, #0
beq .Lc2u_finished
.Lc2u_nowords: cmp ip, #2
ldrb r3, [r1], #1
-USER( T(strb) r3, [r0], #1) @ May fault
+USER( TUSER( strb) r3, [r0], #1) @ May fault
ldrgeb r3, [r1], #1
-USER( T(strgeb) r3, [r0], #1) @ May fault
+USER( TUSER( strgeb) r3, [r0], #1) @ May fault
ldrgtb r3, [r1], #1
-USER( T(strgtb) r3, [r0], #1) @ May fault
+USER( TUSER( strgtb) r3, [r0], #1) @ May fault
b .Lc2u_finished
.Lc2u_not_enough:
@@ -120,7 +120,7 @@ USER( T(strgtb) r3, [r0], #1) @ May fault
mov r3, r7, pull #8
ldr r7, [r1], #4
orr r3, r3, r7, push #24
-USER( T(str) r3, [r0], #4) @ May fault
+USER( TUSER( str) r3, [r0], #4) @ May fault
mov ip, r0, lsl #32 - PAGE_SHIFT
rsb ip, ip, #0
movs ip, ip, lsr #32 - PAGE_SHIFT
@@ -155,18 +155,18 @@ USER( T(str) r3, [r0], #4) @ May fault
movne r3, r7, pull #8
ldrne r7, [r1], #4
orrne r3, r3, r7, push #24
- T(strne) r3, [r0], #4 @ Shouldnt fault
+ TUSER( strne) r3, [r0], #4 @ Shouldnt fault
ands ip, ip, #3
beq .Lc2u_1fupi
.Lc2u_1nowords: mov r3, r7, get_byte_1
teq ip, #0
beq .Lc2u_finished
cmp ip, #2
-USER( T(strb) r3, [r0], #1) @ May fault
+USER( TUSER( strb) r3, [r0], #1) @ May fault
movge r3, r7, get_byte_2
-USER( T(strgeb) r3, [r0], #1) @ May fault
+USER( TUSER( strgeb) r3, [r0], #1) @ May fault
movgt r3, r7, get_byte_3
-USER( T(strgtb) r3, [r0], #1) @ May fault
+USER( TUSER( strgtb) r3, [r0], #1) @ May fault
b .Lc2u_finished
.Lc2u_2fupi: subs r2, r2, #4
@@ -175,7 +175,7 @@ USER( T(strgtb) r3, [r0], #1) @ May fault
mov r3, r7, pull #16
ldr r7, [r1], #4
orr r3, r3, r7, push #16
-USER( T(str) r3, [r0], #4) @ May fault
+USER( TUSER( str) r3, [r0], #4) @ May fault
mov ip, r0, lsl #32 - PAGE_SHIFT
rsb ip, ip, #0
movs ip, ip, lsr #32 - PAGE_SHIFT
@@ -210,18 +210,18 @@ USER( T(str) r3, [r0], #4) @ May fault
movne r3, r7, pull #16
ldrne r7, [r1], #4
orrne r3, r3, r7, push #16
- T(strne) r3, [r0], #4 @ Shouldnt fault
+ TUSER( strne) r3, [r0], #4 @ Shouldnt fault
ands ip, ip, #3
beq .Lc2u_2fupi
.Lc2u_2nowords: mov r3, r7, get_byte_2
teq ip, #0
beq .Lc2u_finished
cmp ip, #2
-USER( T(strb) r3, [r0], #1) @ May fault
+USER( TUSER( strb) r3, [r0], #1) @ May fault
movge r3, r7, get_byte_3
-USER( T(strgeb) r3, [r0], #1) @ May fault
+USER( TUSER( strgeb) r3, [r0], #1) @ May fault
ldrgtb r3, [r1], #0
-USER( T(strgtb) r3, [r0], #1) @ May fault
+USER( TUSER( strgtb) r3, [r0], #1) @ May fault
b .Lc2u_finished
.Lc2u_3fupi: subs r2, r2, #4
@@ -230,7 +230,7 @@ USER( T(strgtb) r3, [r0], #1) @ May fault
mov r3, r7, pull #24
ldr r7, [r1], #4
orr r3, r3, r7, push #8
-USER( T(str) r3, [r0], #4) @ May fault
+USER( TUSER( str) r3, [r0], #4) @ May fault
mov ip, r0, lsl #32 - PAGE_SHIFT
rsb ip, ip, #0
movs ip, ip, lsr #32 - PAGE_SHIFT
@@ -265,18 +265,18 @@ USER( T(str) r3, [r0], #4) @ May fault
movne r3, r7, pull #24
ldrne r7, [r1], #4
orrne r3, r3, r7, push #8
- T(strne) r3, [r0], #4 @ Shouldnt fault
+ TUSER( strne) r3, [r0], #4 @ Shouldnt fault
ands ip, ip, #3
beq .Lc2u_3fupi
.Lc2u_3nowords: mov r3, r7, get_byte_3
teq ip, #0
beq .Lc2u_finished
cmp ip, #2
-USER( T(strb) r3, [r0], #1) @ May fault
+USER( TUSER( strb) r3, [r0], #1) @ May fault
ldrgeb r3, [r1], #1
-USER( T(strgeb) r3, [r0], #1) @ May fault
+USER( TUSER( strgeb) r3, [r0], #1) @ May fault
ldrgtb r3, [r1], #0
-USER( T(strgtb) r3, [r0], #1) @ May fault
+USER( TUSER( strgtb) r3, [r0], #1) @ May fault
b .Lc2u_finished
ENDPROC(__copy_to_user)
@@ -295,11 +295,11 @@ ENDPROC(__copy_to_user)
.Lcfu_dest_not_aligned:
rsb ip, ip, #4
cmp ip, #2
-USER( T(ldrb) r3, [r1], #1) @ May fault
+USER( TUSER( ldrb) r3, [r1], #1) @ May fault
strb r3, [r0], #1
-USER( T(ldrgeb) r3, [r1], #1) @ May fault
+USER( TUSER( ldrgeb) r3, [r1], #1) @ May fault
strgeb r3, [r0], #1
-USER( T(ldrgtb) r3, [r1], #1) @ May fault
+USER( TUSER( ldrgtb) r3, [r1], #1) @ May fault
strgtb r3, [r0], #1
sub r2, r2, ip
b .Lcfu_dest_aligned
@@ -322,7 +322,7 @@ ENTRY(__copy_from_user)
.Lcfu_0fupi: subs r2, r2, #4
addmi ip, r2, #4
bmi .Lcfu_0nowords
-USER( T(ldr) r3, [r1], #4)
+USER( TUSER( ldr) r3, [r1], #4)
str r3, [r0], #4
mov ip, r1, lsl #32 - PAGE_SHIFT @ On each page, use a ld/st??t instruction
rsb ip, ip, #0
@@ -351,18 +351,18 @@ USER( T(ldr) r3, [r1], #4)
ldmneia r1!, {r3 - r4} @ Shouldnt fault
stmneia r0!, {r3 - r4}
tst ip, #4
- T(ldrne) r3, [r1], #4 @ Shouldnt fault
+ TUSER( ldrne) r3, [r1], #4 @ Shouldnt fault
strne r3, [r0], #4
ands ip, ip, #3
beq .Lcfu_0fupi
.Lcfu_0nowords: teq ip, #0
beq .Lcfu_finished
.Lcfu_nowords: cmp ip, #2
-USER( T(ldrb) r3, [r1], #1) @ May fault
+USER( TUSER( ldrb) r3, [r1], #1) @ May fault
strb r3, [r0], #1
-USER( T(ldrgeb) r3, [r1], #1) @ May fault
+USER( TUSER( ldrgeb) r3, [r1], #1) @ May fault
strgeb r3, [r0], #1
-USER( T(ldrgtb) r3, [r1], #1) @ May fault
+USER( TUSER( ldrgtb) r3, [r1], #1) @ May fault
strgtb r3, [r0], #1
b .Lcfu_finished
@@ -375,7 +375,7 @@ USER( T(ldrgtb) r3, [r1], #1) @ May fault
.Lcfu_src_not_aligned:
bic r1, r1, #3
-USER( T(ldr) r7, [r1], #4) @ May fault
+USER( TUSER( ldr) r7, [r1], #4) @ May fault
cmp ip, #2
bgt .Lcfu_3fupi
beq .Lcfu_2fupi
@@ -383,7 +383,7 @@ USER( T(ldr) r7, [r1], #4) @ May fault
addmi ip, r2, #4
bmi .Lcfu_1nowords
mov r3, r7, pull #8
-USER( T(ldr) r7, [r1], #4) @ May fault
+USER( TUSER( ldr) r7, [r1], #4) @ May fault
orr r3, r3, r7, push #24
str r3, [r0], #4
mov ip, r1, lsl #32 - PAGE_SHIFT
@@ -418,7 +418,7 @@ USER( T(ldr) r7, [r1], #4) @ May fault
stmneia r0!, {r3 - r4}
tst ip, #4
movne r3, r7, pull #8
-USER( T(ldrne) r7, [r1], #4) @ May fault
+USER( TUSER( ldrne) r7, [r1], #4) @ May fault
orrne r3, r3, r7, push #24
strne r3, [r0], #4
ands ip, ip, #3
@@ -438,7 +438,7 @@ USER( T(ldrne) r7, [r1], #4) @ May fault
addmi ip, r2, #4
bmi .Lcfu_2nowords
mov r3, r7, pull #16
-USER( T(ldr) r7, [r1], #4) @ May fault
+USER( TUSER( ldr) r7, [r1], #4) @ May fault
orr r3, r3, r7, push #16
str r3, [r0], #4
mov ip, r1, lsl #32 - PAGE_SHIFT
@@ -474,7 +474,7 @@ USER( T(ldr) r7, [r1], #4) @ May fault
stmneia r0!, {r3 - r4}
tst ip, #4
movne r3, r7, pull #16
-USER( T(ldrne) r7, [r1], #4) @ May fault
+USER( TUSER( ldrne) r7, [r1], #4) @ May fault
orrne r3, r3, r7, push #16
strne r3, [r0], #4
ands ip, ip, #3
@@ -486,7 +486,7 @@ USER( T(ldrne) r7, [r1], #4) @ May fault
strb r3, [r0], #1
movge r3, r7, get_byte_3
strgeb r3, [r0], #1
-USER( T(ldrgtb) r3, [r1], #0) @ May fault
+USER( TUSER( ldrgtb) r3, [r1], #0) @ May fault
strgtb r3, [r0], #1
b .Lcfu_finished
@@ -494,7 +494,7 @@ USER( T(ldrgtb) r3, [r1], #0) @ May fault
addmi ip, r2, #4
bmi .Lcfu_3nowords
mov r3, r7, pull #24
-USER( T(ldr) r7, [r1], #4) @ May fault
+USER( TUSER( ldr) r7, [r1], #4) @ May fault
orr r3, r3, r7, push #8
str r3, [r0], #4
mov ip, r1, lsl #32 - PAGE_SHIFT
@@ -529,7 +529,7 @@ USER( T(ldr) r7, [r1], #4) @ May fault
stmneia r0!, {r3 - r4}
tst ip, #4
movne r3, r7, pull #24
-USER( T(ldrne) r7, [r1], #4) @ May fault
+USER( TUSER( ldrne) r7, [r1], #4) @ May fault
orrne r3, r3, r7, push #8
strne r3, [r0], #4
ands ip, ip, #3
@@ -539,9 +539,9 @@ USER( T(ldrne) r7, [r1], #4) @ May fault
beq .Lcfu_finished
cmp ip, #2
strb r3, [r0], #1
-USER( T(ldrgeb) r3, [r1], #1) @ May fault
+USER( TUSER( ldrgeb) r3, [r1], #1) @ May fault
strgeb r3, [r0], #1
-USER( T(ldrgtb) r3, [r1], #1) @ May fault
+USER( TUSER( ldrgtb) r3, [r1], #1) @ May fault
strgtb r3, [r0], #1
b .Lcfu_finished
ENDPROC(__copy_from_user)
--
1.8.3.2
More information about the kernel-team
mailing list