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-rw-r--r--sysdeps/hurd/htl/pt-kill.c4
-rw-r--r--sysdeps/mach/htl/pt-thread-terminate.c3
2 files changed, 7 insertions, 0 deletions
diff --git a/sysdeps/hurd/htl/pt-kill.c b/sysdeps/hurd/htl/pt-kill.c
index c06542b587..b6ee4232a9 100644
--- a/sysdeps/hurd/htl/pt-kill.c
+++ b/sysdeps/hurd/htl/pt-kill.c
@@ -35,6 +35,10 @@ __pthread_kill (pthread_t thread, int sig)
   if (pthread == NULL)
     return ESRCH;
 
+  if (pthread->kernel_thread == MACH_PORT_DEAD)
+    /* The pthread ID is still valid but we cannot send a signal any more.  */
+    return 0;
+
   ss = _hurd_thread_sigstate (pthread->kernel_thread);
   assert (ss);
 
diff --git a/sysdeps/mach/htl/pt-thread-terminate.c b/sysdeps/mach/htl/pt-thread-terminate.c
index 8bc37b38e4..0cf72b330f 100644
--- a/sysdeps/mach/htl/pt-thread-terminate.c
+++ b/sysdeps/mach/htl/pt-thread-terminate.c
@@ -68,6 +68,9 @@ __pthread_thread_terminate (struct __pthread *thread)
   /* The wake up port is now no longer needed.  */
   __mach_port_destroy (__mach_task_self (), wakeup_port);
 
+  /* The kernel thread won't be there any more.  */
+  thread->kernel_thread = MACH_PORT_DEAD;
+
   /* Terminate and release all that's left.  */
   err = __thread_terminate_release (kernel_thread, mach_task_self (),
 				    kernel_thread, reply_port,