1 files changed, 1 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index ceb4e7b62cf4..21981a89e394 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -971,6 +971,7 @@ int copy_thread(unsigned long clone_flags, unsigned long usp,
          * do some house keeping and then return from the fork or clone
          * system call, using the stack frame created above.
          */
+        ((unsigned long *)sp)[0] = 0;
         sp -= sizeof(struct pt_regs);
         kregs = (struct pt_regs *) sp;
         sp -= STACK_FRAME_OVERHEAD;