Update.

2001-11-22  Wolfram Gloger  <wg@malloc.de>

	* pthread.c (pthread_onexit_process): Don't call free
	after threads have been asynchronously terminated.

	* manager.c (pthread_handle_exit): Surround cancellation
	of threads with __flockfilelist()/__funlockfilelist().

linuxthreads/ChangeLog

@@ -1,3 +1,11 @@
+2001-11-22  Wolfram Gloger  <wg@malloc.de>
+
+	* pthread.c (pthread_onexit_process): Don't call free
+	after threads have been asynchronously terminated.
+
+	* manager.c (pthread_handle_exit): Surround cancellation
+	of threads with __flockfilelist()/__funlockfilelist().
+
 2001-11-26  Andreas Schwab  <schwab@suse.de>
 
 	* manager.c (pthread_handle_create): Start the child thread with

linuxthreads/manager.c

@@ -909,6 +909,12 @@ static void pthread_handle_exit(pthread_descr issuing_thread, int exitcode)
   pthread_descr th;
   __pthread_exit_requested = 1;
   __pthread_exit_code = exitcode;
+  /* A forced asynchronous cancellation follows.  Make sure we won't
+     get stuck later in the main thread with a system lock being held
+     by one of the cancelled threads.  Ideally one would use the same
+     code as in pthread_atfork(), but we can't distinguish system and
+     user handlers there.  */
+  __flockfilelist();
   /* Send the CANCEL signal to all running threads, including the main
      thread, but excluding the thread from which the exit request originated
      (that thread must complete the exit, e.g. calling atexit functions
@@ -925,6 +931,7 @@ static void pthread_handle_exit(pthread_descr issuing_thread, int exitcode)
        th = th->p_nextlive) {
     waitpid(th->p_pid, NULL, __WCLONE);
   }
+  __fresetlockfiles();
   restart(issuing_thread);
   _exit(0);
 }

linuxthreads/pthread.c

@@ -795,7 +795,9 @@ static void pthread_onexit_process(int retcode, void *arg)
     if (self == __pthread_main_thread)
       {
 	waitpid(__pthread_manager_thread.p_pid, NULL, __WCLONE);
-	free (__pthread_manager_thread_bos);
+	/* Since all threads have been asynchronously terminated
+           (possibly holding locks), free cannot be used any more.  */
+	/*free (__pthread_manager_thread_bos);*/
 	__pthread_manager_thread_bos = __pthread_manager_thread_tos = NULL;
       }
   }