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-rw-r--r--arch/powerpc/kernel/process.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index f698aa77127..995b14688d3 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -362,7 +362,11 @@ static void show_instructions(struct pt_regs *regs)
if (!(i % 8))
printk("\n");
- if (BAD_PC(pc) || __get_user(instr, (unsigned int *)pc)) {
+ /* We use __get_user here *only* to avoid an OOPS on a
+ * bad address because the pc *should* only be a
+ * kernel address.
+ */
+ if (BAD_PC(pc) || __get_user(instr, (unsigned int __user *)pc)) {
printk("XXXXXXXX ");
} else {
if (regs->nip == pc)