diff --git a/[refs] b/[refs]
index 5f20c2017fbd..e265417fa6c9 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 60ed7951d0c9bf8de8588384134f16474367b410
+refs/heads/master: 7c1b90a1e964f72bde88511e5cfe1c04318ff3d1
diff --git a/trunk/arch/avr32/kernel/signal.c b/trunk/arch/avr32/kernel/signal.c
index 5616a00c10ba..c5b11f9067f1 100644
--- a/trunk/arch/avr32/kernel/signal.c
+++ b/trunk/arch/avr32/kernel/signal.c
@@ -93,6 +93,9 @@ asmlinkage int sys_rt_sigreturn(struct pt_regs *regs)
 	if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
 		goto badframe;
 
+	if (do_sigaltstack(&frame->uc.uc_stack, NULL, regs->sp) == -EFAULT)
+		goto badframe;
+
 	pr_debug("Context restored: pc = %08lx, lr = %08lx, sp = %08lx\n",
 		 regs->pc, regs->lr, regs->sp);