diff --git a/arch/arm/src/common/arm_backtrace_thumb.c b/arch/arm/src/common/arm_backtrace_thumb.c
index 83265c5df72..d7423193d79 100644
--- a/arch/arm/src/common/arm_backtrace_thumb.c
+++ b/arch/arm/src/common/arm_backtrace_thumb.c
@@ -319,7 +319,7 @@ __attribute__((no_sanitize_address))
 static int backtrace_push(FAR void *limit, FAR void **sp, FAR void *pc,
                           FAR void **buffer, int size, FAR int *skip)
 {
-  int i = 1;
+  int i = 0;
 
   if (!in_code_region(pc))
     {
@@ -350,11 +350,6 @@ static int backtrace_push(FAR void *limit, FAR void **sp, FAR void *pc,
         {
           *buffer++ = pc;
         }
-
-      if (ip)
-        {
-          ip = NULL;
-        }
     }
 
   return i;
@@ -521,7 +516,7 @@ int up_backtrace(FAR struct tcb_s *tcb,
                                &g_intstacktop,
 #  endif /* CONFIG_SMP */
                                &sp, (FAR void *)up_backtrace + 10,
-                               buffer, size);
+                               buffer, size, &skip);
 #else
           ret = backtrace_push(rtcb->stack_base_ptr +
                                rtcb->adj_stack_size,