svn commit: r305169 - head/sys/kern

[Patrick Kelsey]

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;