2.4.25

 kernel

diff -urN linux-2.4.24/kernel/signal.c linux-2.4.25/kernel/signal.c
--- linux-2.4.24/kernel/signal.c   2003-06-13 07:51:39.000000000 -0700
+++ linux-2.4.25/kernel/signal.c   2004-02-18 05:36:32.000000000 -0800
@@ -879,16 +879,16 @@
          error = -EINVAL;
          break;
       case SIG_BLOCK:
-         sigorsets(&new_set, &old_set, &new_set);
+         sigorsets(¤t->blocked, &old_set, &new_set);
          break;
       case SIG_UNBLOCK:
-         signandsets(&new_set, &old_set, &new_set);
+         signandsets(¤t->blocked, &old_set, &new_set);
          break;
       case SIG_SETMASK:
+         current->blocked = new_set;
          break;
       }
 
-      current->blocked = new_set;
       recalc_sigpending(current);
       spin_unlock_irq(¤t->sigmask_lock);
       if (error)