Merge branch 'fix/hda' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6

[pandora-kernel.git] / arch / x86 / kernel / dumpstack.h

diff --git a/arch/x86/kernel/dumpstack.h b/arch/x86/kernel/dumpstack.h
index e39e771..e1a93be 100644 (file)
--- a/arch/x86/kernel/dumpstack.h
+++ b/arch/x86/kernel/dumpstack.h
@@ -14,6 +14,8 @@
 #define get_bp(bp) asm("movq %%rbp, %0" : "=r" (bp) :)
 #endif
 
+#include <linux/uaccess.h>
+
 extern void
 show_trace_log_lvl(struct task_struct *task, struct pt_regs *regs,
                unsigned long *stack, unsigned long bp, char *log_lvl);
@@ -42,8 +44,10 @@ static inline unsigned long rewind_frame_pointer(int n)
        get_bp(frame);
 
 #ifdef CONFIG_FRAME_POINTER
-       while (n--)
-               frame = frame->next_frame;
+       while (n--) {
+               if (probe_kernel_address(&frame->next_frame, frame))
+                       break;
+       }
 #endif
 
        return (unsigned long)frame;