---

yaml --- r: 136347 b: refs/heads/master c: 7e09b2a h: refs/heads/master i: 136345: f9ad3bc 136343: 20f1721 v: v3
git-mirror · May 26, 2008 · 818cc47 · 818cc47
1 parent e0d82cc
commit 818cc47
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Showing 2 changed files with 7 additions and 3 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: ce22bd92cba0958e052cb1ce0f89f1d3a02b60a7
+refs/heads/master: 7e09b2a02dae4616a5a26000169964b32f86cd35
diff --git a/trunk/arch/x86/kernel/process_64.c b/trunk/arch/x86/kernel/process_64.c
@@ -150,9 +150,13 @@ void cpu_idle(void)
 #ifdef CONFIG_CC_STACKPROTECTOR
 	/*
 	 * If we're the non-boot CPU, nothing set the PDA stack
-	 * canary up for us. This is as good a place as any for
-	 * doing that.
+	 * canary up for us - and if we are the boot CPU we have
+	 * a 0 stack canary. This is a good place for updating
+	 * it, as we wont ever return from this function (so the
+	 * invalid canaries already on the stack wont ever
+	 * trigger):
 	 */
+	current->stack_canary = get_random_int();
 	write_pda(stack_canary, current->stack_canary);
 #endif
 	/* endless idle loop with no priority at all */