Linux crashes when trying to online secondary core
Thomas Gleixner
tglx at linutronix.de
Wed Dec 14 09:08:14 PST 2016
On Wed, 14 Dec 2016, Mason wrote:
> Hello,
>
> I'm seeing Linux v4.9 crash (dereferencing NULL) when I try to online
> the secondary core, after putting it offline.
Does the patch below fix the issue?
Thanks,
tglx
8<---------------
diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h
index 22acee76cf4c..2594c287b078 100644
--- a/include/linux/cpuhotplug.h
+++ b/include/linux/cpuhotplug.h
@@ -101,7 +101,6 @@ enum cpuhp_state {
CPUHP_AP_ARM_L2X0_STARTING,
CPUHP_AP_ARM_ARCH_TIMER_STARTING,
CPUHP_AP_ARM_GLOBAL_TIMER_STARTING,
- CPUHP_AP_DUMMY_TIMER_STARTING,
CPUHP_AP_JCORE_TIMER_STARTING,
CPUHP_AP_EXYNOS4_MCT_TIMER_STARTING,
CPUHP_AP_ARM_TWD_STARTING,
@@ -111,6 +110,7 @@ enum cpuhp_state {
CPUHP_AP_MARCO_TIMER_STARTING,
CPUHP_AP_MIPS_GIC_TIMER_STARTING,
CPUHP_AP_ARC_TIMER_STARTING,
+ CPUHP_AP_DUMMY_TIMER_STARTING,
CPUHP_AP_KVM_STARTING,
CPUHP_AP_KVM_ARM_VGIC_INIT_STARTING,
CPUHP_AP_KVM_ARM_VGIC_STARTING,
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