---

yaml --- r: 201505 b: refs/heads/master c: df0698b h: refs/heads/master i: 201503: 4eb3dad v: v3
git-mirror · Jun 15, 2010 · 0639654 · 0639654
1 parent a22a5d1
commit 0639654
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Showing 3 changed files with 12 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: c743f38013aeff58ef6252601e397b5ba281c633
+refs/heads/master: df0698be14c6683606d5df2d83e3ae40f85ed0d9
diff --git a/trunk/arch/arm/kernel/asm-offsets.c b/trunk/arch/arm/kernel/asm-offsets.c
@@ -40,6 +40,9 @@
 int main(void)
 {
   DEFINE(TSK_ACTIVE_MM,		offsetof(struct task_struct, active_mm));
+#ifdef CONFIG_CC_STACKPROTECTOR
+  DEFINE(TSK_STACK_CANARY,	offsetof(struct task_struct, stack_canary));
+#endif
   BLANK();
   DEFINE(TI_FLAGS,		offsetof(struct thread_info, flags));
   DEFINE(TI_PREEMPT,		offsetof(struct thread_info, preempt_count));

diff --git a/trunk/arch/arm/kernel/entry-armv.S b/trunk/arch/arm/kernel/entry-armv.S
@@ -745,6 +745,11 @@ ENTRY(__switch_to)
 	mov	r4, #0xffff0fff
 	str	r3, [r4, #-15]			@ TLS val at 0xffff0ff0
 #endif
+#if defined(CONFIG_CC_STACKPROTECTOR) && !defined(CONFIG_SMP)
+	ldr	r7, [r2, #TI_TASK]
+	ldr	r8, =__stack_chk_guard
+	ldr	r7, [r7, #TSK_STACK_CANARY]
+#endif
 #ifdef CONFIG_MMU
 	mcr	p15, 0, r6, c3, c0, 0		@ Set domain register
 #endif
@@ -753,6 +758,9 @@ ENTRY(__switch_to)
 	ldr	r0, =thread_notify_head
 	mov	r1, #THREAD_NOTIFY_SWITCH
 	bl	atomic_notifier_call_chain
+#if defined(CONFIG_CC_STACKPROTECTOR) && !defined(CONFIG_SMP)
+	str	r7, [r8]
+#endif
  THUMB(	mov	ip, r4			   )
 	mov	r0, r5
  ARM(	ldmia	r4, {r4 - sl, fp, sp, pc}  )	@ Load all regs saved previously