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[Qemu-stable] [PATCH] virtio-9p: use accessor to get thread_pool

From: Greg Kurz
Subject: [Qemu-stable] [PATCH] virtio-9p: use accessor to get thread_pool
Date: Sun, 20 Dec 2015 12:19:05 +0100
User-agent: StGit/0.17.1-dirty

The aio_context_new() function does not allocate a thread pool. This is
deferred to the first call to the aio_get_thread_pool() accessor. It is
hence forbidden to access the thread_pool field directly, as it may be
NULL. The accessor *must* be used always.

Fixes: ebac1202c95a4f1b76b6ef3f0f63926fa76e753e
Signed-off-by: Greg Kurz <address@hidden>


I did not have time to reproduce the issue, and therefore to
effectively test this patch fixes it. Maybe you can do it ?



 hw/9pfs/virtio-9p-coth.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/9pfs/virtio-9p-coth.c b/hw/9pfs/virtio-9p-coth.c
index fb6e8f80e0f4..ab9425c60fd2 100644
--- a/hw/9pfs/virtio-9p-coth.c
+++ b/hw/9pfs/virtio-9p-coth.c
@@ -36,6 +36,6 @@ static int coroutine_enter_func(void *arg)
 void co_run_in_worker_bh(void *opaque)
     Coroutine *co = opaque;
-    thread_pool_submit_aio(qemu_get_aio_context()->thread_pool,
+    thread_pool_submit_aio(aio_get_thread_pool(qemu_get_aio_context()),
                            coroutine_enter_func, co, coroutine_enter_cb, co);

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