From bd9e5eefecb3d69018bb95796298019d309cbec8 Mon Sep 17 00:00:00 2001
From: Milton Miller <miltonm@bga.com>
Date: Tue, 10 May 2011 19:28:41 +0000
Subject: [PATCH] powerpc/kdump64: Don't reference freed memory as pacas
Starting with 1426d5a3bd07589534286375998c0c8c6fdc5260 (powerpc:
Dynamically allocate pacas) the space for pacas beyond cpu_possible
is freed, but we failed to update the loop in crash.c.
Since c1854e00727f50f7ac99e98d26ece04c087ef785 (powerpc: Set nr_cpu_ids
early and use it to free PACAs) the number of pacas allocated is
always nr_cpu_ids.
Signed-off-by: Milton Miller <miltonm@bga.com>
Cc: <stable@kernel.org> # .34.x
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/powerpc/kernel/crash.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/crash.c b/arch/powerpc/kernel/crash.c
index 21f2c781ded1..4e6ee944495a 100644
--- a/arch/powerpc/kernel/crash.c
+++ b/arch/powerpc/kernel/crash.c
@@ -236,7 +236,7 @@ static void crash_kexec_wait_realmode(int cpu)
int i;
msecs = 10000;
- for (i=0; i < NR_CPUS && msecs > 0; i++) {
+ for (i=0; i < nr_cpu_ids && msecs > 0; i++) {
if (i == cpu)
continue;
--
2.20.1