[Skiboot] [PATCH] core/cpu: Call memset with proper cpu_thread offset

[Vasant Hegde]

"cpu_thread *t + value" vs "(void *)t + val"

Fixes: cfe9d441 (core/cpu: Prevent clobbering of stack guard for boot-cpu)
CC: stable <skiboot at lists.ozlabs.org> # v6.0+
CC: Vaibhav Jain <vaibhav at linux.vnet.ibm.com>
CC: Nicholas Piggin <npiggin at gmail.com>
CC: Mahesh Salgaonkar <mahesh at linux.vnet.ibm.com>
Acked-by: Mahesh Salgaonkar <mahesh at linux.vnet.ibm.com>
Signed-off-by: Vasant Hegde <hegdevasant at linux.vnet.ibm.com>
---
 core/cpu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/cpu.c b/core/cpu.c
index b5bfb2773..9d7532962 100644
--- a/core/cpu.c
+++ b/core/cpu.c
@@ -889,7 +889,7 @@ static void init_cpu_thread(struct cpu_thread *t,
 	const size_t guard_skip = container_off_var(t, stack_guard) +
 		sizeof(t->stack_guard);
 
-	memset(t + guard_skip, 0, sizeof(struct cpu_thread) - guard_skip);
+	memset(((void *)t) + guard_skip, 0, sizeof(struct cpu_thread) - guard_skip);
 	init_lock(&t->dctl_lock);
 	init_lock(&t->job_lock);
 	list_head_init(&t->job_queue);
-- 
2.14.3