X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;f=kernel%2Fworkqueue.c;h=193e977a10eaeb6a7f9ca5927d08f558d68df434;hb=18f2af2d68815e1c4d5c275ebd030e27ef627582;hp=82ef9f3b7473a81ef5004362c7281ae9f4aea82a;hpb=5c2740280fef1c2da7835dea3856b5e9fc2a4bfd;p=~andy%2Flinux

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 82ef9f3b747..193e977a10e 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -1851,6 +1851,12 @@ static void destroy_worker(struct worker *worker)
 	if (worker->flags & WORKER_IDLE)
 		pool->nr_idle--;
 
+	/*
+	 * Once WORKER_DIE is set, the kworker may destroy itself at any
+	 * point.  Pin to ensure the task stays until we're done with it.
+	 */
+	get_task_struct(worker->task);
+
 	list_del_init(&worker->entry);
 	worker->flags |= WORKER_DIE;
 
@@ -1859,6 +1865,7 @@ static void destroy_worker(struct worker *worker)
 	spin_unlock_irq(&pool->lock);
 
 	kthread_stop(worker->task);
+	put_task_struct(worker->task);
 	kfree(worker);
 
 	spin_lock_irq(&pool->lock);