1 files changed, 19 insertions, 9 deletions

diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c
index 321119881abf..9f7195a5773e 100644
--- a/arch/arm64/kernel/smp.c
+++ b/arch/arm64/kernel/smp.c
@@ -154,7 +154,7 @@ int __cpu_up(unsigned int cpu, struct task_struct *idle)
 	 * page tables.
 	 */
 	secondary_data.task = idle;
-	secondary_data.stack = task_stack_page(idle) + THREAD_START_SP;
+	secondary_data.stack = task_stack_page(idle) + THREAD_SIZE;
 	update_cpu_boot_status(CPU_MMU_OFF);
 	__flush_dcache_area(&secondary_data, sizeof(secondary_data));
 
@@ -469,7 +469,7 @@ static u64 __init of_get_cpu_mpidr(struct device_node *dn)
 	 */
 	cell = of_get_property(dn, "reg", NULL);
 	if (!cell) {
-		pr_err("%s: missing reg property\n", dn->full_name);
+		pr_err("%pOF: missing reg property\n", dn);
 		return INVALID_HWID;
 	}
 
@@ -478,7 +478,7 @@ static u64 __init of_get_cpu_mpidr(struct device_node *dn)
 	 * Non affinity bits must be set to 0 in the DT
 	 */
 	if (hwid & ~MPIDR_HWID_BITMASK) {
-		pr_err("%s: invalid reg property\n", dn->full_name);
+		pr_err("%pOF: invalid reg property\n", dn);
 		return INVALID_HWID;
 	}
 	return hwid;
@@ -627,8 +627,8 @@ static void __init of_parse_and_init_cpus(void)
 			goto next;
 
 		if (is_mpidr_duplicate(cpu_count, hwid)) {
-			pr_err("%s: duplicate cpu reg properties in the DT\n",
-				dn->full_name);
+			pr_err("%pOF: duplicate cpu reg properties in the DT\n",
+				dn);
 			goto next;
 		}
 
@@ -640,8 +640,8 @@ static void __init of_parse_and_init_cpus(void)
 		 */
 		if (hwid == cpu_logical_map(0)) {
 			if (bootcpu_valid) {
-				pr_err("%s: duplicate boot cpu reg property in DT\n",
-					dn->full_name);
+				pr_err("%pOF: duplicate boot cpu reg property in DT\n",
+					dn);
 				goto next;
 			}
 
@@ -690,7 +690,7 @@ void __init smp_init_cpus(void)
 				      acpi_parse_gic_cpu_interface, 0);
 
 	if (cpu_count > nr_cpu_ids)
-		pr_warn("Number of cores (%d) exceeds configured maximum of %d - clipping\n",
+		pr_warn("Number of cores (%d) exceeds configured maximum of %u - clipping\n",
 			cpu_count, nr_cpu_ids);
 
 	if (!bootcpu_valid) {
@@ -977,11 +977,21 @@ void smp_send_stop(void)
 }
 
 #ifdef CONFIG_KEXEC_CORE
-void smp_send_crash_stop(void)
+void crash_smp_send_stop(void)
 {
+	static int cpus_stopped;
 	cpumask_t mask;
 	unsigned long timeout;
 
+	/*
+	 * This function can be called twice in panic path, but obviously
+	 * we execute this only once.
+	 */
+	if (cpus_stopped)
+		return;
+
+	cpus_stopped = 1;
+
 	if (num_online_cpus() == 1)
 		return;