[dpdk-dev] [PATCH v2] net/virtio-user: fix run close(0) and close callfd

[Jiawei Zhu <17826875952@163.com>]

From: Jiawei Zhu <zhujiawei12@huawei.com>

When i < VIRTIO_MAX_VIRTQUEUES and j == i,
dev->callfds[i] and dev->kickfds[i] are default 0.
So it will close(0), close the standard input (stdin).
And when the code fails in kickfd creation,
it will leaves one callfd not closed.

Fixes: e6e7ad8b3024 ("net/virtio-user: move eventfd open/close into init/uninit")
Cc: stable@dpdk.org:

Signed-off-by: Jiawei Zhu <zhujiawei12@huawei.com>
---
v2:
* Add close callfd when fail in kickfd creation before break.
---
---
 drivers/net/virtio/virtio_user/virtio_user_dev.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.c b/drivers/net/virtio/virtio_user/virtio_user_dev.c
index 053f026..e1cbad0 100644
--- a/drivers/net/virtio/virtio_user/virtio_user_dev.c
+++ b/drivers/net/virtio/virtio_user/virtio_user_dev.c
@@ -276,6 +276,7 @@ int virtio_user_stop_device(struct virtio_user_dev *dev)
 		}
 		kickfd = eventfd(0, EFD_CLOEXEC | EFD_NONBLOCK);
 		if (kickfd < 0) {
+			close(callfd);
 			PMD_DRV_LOG(ERR, "kickfd error, %s", strerror(errno));
 			break;
 		}
@@ -284,7 +285,7 @@ int virtio_user_stop_device(struct virtio_user_dev *dev)
 	}
 
 	if (i < VIRTIO_MAX_VIRTQUEUES) {
-		for (j = 0; j <= i; ++j) {
+		for (j = 0; j < i; ++j) {
 			close(dev->callfds[j]);
 			close(dev->kickfds[j]);
 		}
-- 
1.8.3.1