diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c
index c9b2a75563e1..c1632e87b679 100644
--- a/arch/mips/kernel/signal.c
+++ b/arch/mips/kernel/signal.c
@@ -562,6 +562,13 @@ void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs,
 	/* Default to using normal stack */
 	sp = regs->regs[29];
 
+	/*
+	 * If we are on the alternate signal stack and would overflow it, don't.
+	 * Return an always-bogus address instead so we will die with SIGSEGV.
+	 */
+	if (on_sig_stack(sp) && !likely(on_sig_stack(sp - frame_size)))
+		return (void __user __force *)(-1UL);
+
 	/*
 	 * FPU emulator may have it's own trampoline active just
 	 * above the user stack, 16-bytes before the next lowest