From: Anton Blanchard <anton@samba.org>
Date: Fri, 13 Oct 2006 02:17:16 +0000 (+1000)
Subject: [POWERPC] Better check in show_instructions
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=00ae36de49cc718d4122e1c8aac96fd1a5a2553c;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[POWERPC] Better check in show_instructions

Instead of just checking that an address is in the right range, use the
provided __kernel_text_address() helper which covers both the kernel and
module text sections.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---

diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 7b2f6452ba72..f3d4dd580dd6 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -341,13 +341,6 @@ struct task_struct *__switch_to(struct task_struct *prev,
 
 static int instructions_to_print = 16;
 
-#ifdef CONFIG_PPC64
-#define BAD_PC(pc)	((REGION_ID(pc) != KERNEL_REGION_ID) && \
-		         (REGION_ID(pc) != VMALLOC_REGION_ID))
-#else
-#define BAD_PC(pc)	((pc) < KERNELBASE)
-#endif
-
 static void show_instructions(struct pt_regs *regs)
 {
 	int i;
@@ -366,7 +359,8 @@ static void show_instructions(struct pt_regs *regs)
 		 * bad address because the pc *should* only be a
 		 * kernel address.
 		 */
-		if (BAD_PC(pc) || __get_user(instr, (unsigned int __user *)pc)) {
+		if (!__kernel_text_address(pc) ||
+		     __get_user(instr, (unsigned int __user *)pc)) {
 			printk("XXXXXXXX ");
 		} else {
 			if (regs->nip == pc)