This is a note to let you know that I've just added the patch titled
tools/virtio: initialize spinlocks in vring_test.c
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
tools-virtio-initialize-spinlocks-in-vring_test.c.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 4f01931fd87e20aab431f4ae209beaad456783b9
Author: Ricardo Cañuelo <ricardo.canuelo@xxxxxxxxxxxxx>
Date: Wed Oct 12 08:29:49 2022 +0200
tools/virtio: initialize spinlocks in vring_test.c
[ Upstream commit c262f75cb6bb5a63828e72ce3b8fe808e5029479 ]
The virtio_device vqs_list spinlocks must be initialized before use to
prevent functions that manipulate the device virtualqueues, such as
vring_new_virtqueue(), from blocking indefinitely.
Signed-off-by: Ricardo Cañuelo <ricardo.canuelo@xxxxxxxxxxxxx>
Message-Id: <20221012062949.1526176-1-ricardo.canuelo@xxxxxxxxxxxxx>
Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
Reviewed-by: Xuan Zhuo <xuanzhuo@xxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/tools/virtio/vringh_test.c b/tools/virtio/vringh_test.c
index fa87b58bd5fa..98ff808d6f0c 100644
--- a/tools/virtio/vringh_test.c
+++ b/tools/virtio/vringh_test.c
@@ -308,6 +308,7 @@ static int parallel_test(u64 features,
gvdev.vdev.features = features;
INIT_LIST_HEAD(&gvdev.vdev.vqs);
+ spin_lock_init(&gvdev.vdev.vqs_list_lock);
gvdev.to_host_fd = to_host[1];
gvdev.notifies = 0;
@@ -455,6 +456,7 @@ int main(int argc, char *argv[])
getrange = getrange_iov;
vdev.features = 0;
INIT_LIST_HEAD(&vdev.vqs);
+ spin_lock_init(&vdev.vqs_list_lock);
while (argv[1]) {
if (strcmp(argv[1], "--indirect") == 0)
