1 files changed, 1 insertions, 0 deletions

diff --git a/arch/mips/kernel/irixsig.c b/arch/mips/kernel/irixsig.c
index 33506ff25910..5b10ac133ec8 100644
--- a/arch/mips/kernel/irixsig.c
+++ b/arch/mips/kernel/irixsig.c
@@ -430,6 +430,7 @@ asmlinkage int irix_sigprocmask(int how, irix_sigset_t __user *new,
                         break;
 
                 default:
+                        spin_unlock_irq(&current->sighand->siglock);
                         return -EINVAL;
                 }
                 recalc_sigpending();