1 files changed, 5 insertions, 8 deletions

diff --git a/arch/sparc64/kernel/stacktrace.c b/arch/sparc64/kernel/stacktrace.c
index e9d7f0660f2e..4e21d4a57d3b 100644
--- a/arch/sparc64/kernel/stacktrace.c
+++ b/arch/sparc64/kernel/stacktrace.c
@@ -5,10 +5,12 @@
 #include <asm/ptrace.h>
 #include <asm/stacktrace.h>
 
+#include "kstack.h"
+
 void save_stack_trace(struct stack_trace *trace)
 {
-        unsigned long ksp, fp, thread_base;
         struct thread_info *tp = task_thread_info(current);
+        unsigned long ksp, fp;
 
         stack_trace_flush();
 
@@ -18,23 +20,18 @@ void save_stack_trace(struct stack_trace *trace)
         );
 
         fp = ksp + STACK_BIAS;
-        thread_base = (unsigned long) tp;
         do {
                 struct sparc_stackf *sf;
                 struct pt_regs *regs;
                 unsigned long pc;
 
-                /* Bogus frame pointer? */
-                if (fp < (thread_base + sizeof(struct thread_info)) ||
-                    fp > (thread_base + THREAD_SIZE - sizeof(struct sparc_stackf)))
+                if (!kstack_valid(tp, fp))
                         break;
 
                 sf = (struct sparc_stackf *) fp;
                 regs = (struct pt_regs *) (sf + 1);
 
-                if (((unsigned long)regs <=
-                     (thread_base + THREAD_SIZE - sizeof(*regs))) &&
-                    (regs->magic & ~0x1ff) == PT_REGS_MAGIC) {
+                if (kstack_is_trap_frame(tp, regs)) {
                         if (!(regs->tstate & TSTATE_PRIV))
                                 break;
                         pc = regs->tpc;