Author: pkelsey
Date: Thu Sep  1 02:05:46 2016
New Revision: 305169
URL: https://svnweb.freebsd.org/changeset/base/305169

Log:
  _taskqueue_start_threads() now fails if it doesn't actually start any threads.
  
  Reviewed by:  jhb
  MFC after:    1 week
  Differential Revision:        https://reviews.freebsd.org/D7701

Modified:
  head/sys/kern/subr_taskqueue.c

Modified: head/sys/kern/subr_taskqueue.c
==============================================================================
--- head/sys/kern/subr_taskqueue.c      Thu Sep  1 01:08:18 2016        
(r305168)
+++ head/sys/kern/subr_taskqueue.c      Thu Sep  1 02:05:46 2016        
(r305169)
@@ -625,6 +625,11 @@ _taskqueue_start_threads(struct taskqueu
                } else
                        tq->tq_tcount++;
        }
+       if (tq->tq_tcount == 0) {
+               free(tq->tq_threads, M_TASKQUEUE);
+               tq->tq_threads = NULL;
+               return (ENOMEM);
+       }
        for (i = 0; i < count; i++) {
                if (tq->tq_threads[i] == NULL)
                        continue;
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