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| author | Kees Cook <keescook@chromium.org> | 2017-07-04 21:41:31 -0700 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2017-07-04 21:41:31 -0700 |
| commit | d1185a8c5dd21182012e6dd531b00fd72f4d30cb (patch) | |
| tree | 1c394d6e27bad00e0f3aba4e59ca19823d0486d5 /arch/arm | |
| parent | 6f7da290413ba713f0cdd9ff1a2a9bb129ef4f6c (diff) | |
| parent | 03232e0ddebdc2c9d088e6748075704885f039a5 (diff) | |
| download | linux-d1185a8c5dd21182012e6dd531b00fd72f4d30cb.tar.bz2 | |
Merge branch 'merge/randstruct' into for-next/gcc-plugins
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/include/asm/assembler.h | 2 | ||||
| -rw-r--r-- | arch/arm/kernel/entry-armv.S | 5 | ||||
| -rw-r--r-- | arch/arm/mm/proc-macros.S | 10 |
3 files changed, 10 insertions, 7 deletions
diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h index 68b06f9c65de..ad301f107dd2 100644 --- a/arch/arm/include/asm/assembler.h +++ b/arch/arm/include/asm/assembler.h @@ -87,6 +87,8 @@ #define CALGN(code...) #endif +#define IMM12_MASK 0xfff + /* * Enable and disable interrupts */ diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S index 9f157e7c51e7..c731f0d2b2af 100644 --- a/arch/arm/kernel/entry-armv.S +++ b/arch/arm/kernel/entry-armv.S @@ -797,7 +797,10 @@ ENTRY(__switch_to) #if defined(CONFIG_CC_STACKPROTECTOR) && !defined(CONFIG_SMP) ldr r7, [r2, #TI_TASK] ldr r8, =__stack_chk_guard - ldr r7, [r7, #TSK_STACK_CANARY] + .if (TSK_STACK_CANARY > IMM12_MASK) + add r7, r7, #TSK_STACK_CANARY & ~IMM12_MASK + .endif + ldr r7, [r7, #TSK_STACK_CANARY & IMM12_MASK] #endif #ifdef CONFIG_CPU_USE_DOMAINS mcr p15, 0, r6, c3, c0, 0 @ Set domain register diff --git a/arch/arm/mm/proc-macros.S b/arch/arm/mm/proc-macros.S index 0d40c285bd86..f944836da8a2 100644 --- a/arch/arm/mm/proc-macros.S +++ b/arch/arm/mm/proc-macros.S @@ -25,11 +25,6 @@ ldr \rd, [\rn, #VMA_VM_FLAGS] .endm - .macro tsk_mm, rd, rn - ldr \rd, [\rn, #TI_TASK] - ldr \rd, [\rd, #TSK_ACTIVE_MM] - .endm - /* * act_mm - get current->active_mm */ @@ -37,7 +32,10 @@ bic \rd, sp, #8128 bic \rd, \rd, #63 ldr \rd, [\rd, #TI_TASK] - ldr \rd, [\rd, #TSK_ACTIVE_MM] + .if (TSK_ACTIVE_MM > IMM12_MASK) + add \rd, \rd, #TSK_ACTIVE_MM & ~IMM12_MASK + .endif + ldr \rd, [\rd, #TSK_ACTIVE_MM & IMM12_MASK] .endm /* |