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powerpc/kdump64: Don't reference freed memory as pacas
author
Milton Miller
<miltonm@bga.com>
Tue, 10 May 2011 19:28:41 +0000
(19:28 +0000)
committer
Greg Kroah-Hartman
<gregkh@suse.de>
Fri, 3 Jun 2011 00:31:29 +0000
(09:31 +0900)
commit
bd9e5eefecb3d69018bb95796298019d309cbec8
upstream.
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>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
arch/powerpc/kernel/crash.c
patch
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diff --git
a/arch/powerpc/kernel/crash.c
b/arch/powerpc/kernel/crash.c
index
5b5e1f0
..
c37ff6b
100644
(file)
--- a/
arch/powerpc/kernel/crash.c
+++ b/
arch/powerpc/kernel/crash.c
@@
-170,7
+170,7
@@
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;