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-rw-r--r--arch/powerpc/kernel/process.c1
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;