S_mach_notify_new_task: Ignore notification of dead tasks

In case the new task notification gets late, the task may have terminated
already, and thus a dead name gets provided in the notification. We should
just ignore this, otherwise the task hashing would get collisions on all
such dead tasks ports.

1 files changed, 3 insertions, 0 deletions

diff --git a/proc/mgt.c b/proc/mgt.c
index 38a3a90c..67d74049 100644
--- a/proc/mgt.c
+++ b/proc/mgt.c
@@ -1365,6 +1365,9 @@ S_mach_notify_new_task (struct port_info *notify,
       || (kernel_proc != NULL && notify != (struct port_info *) kernel_proc))
     return EOPNOTSUPP;
 
+  if (task == MACH_PORT_DEAD)
+    return ESRCH;
+
   parentp = task_find_nocreate (parent);
   if (! parentp)
     return ESRCH;