Re: [syzbot] INFO: task hung in add_early_randomness (2)

[Jason Wang]

On Wed, Jun 8, 2022 at 10:51 AM syzbot
<syzbot+5b59d6d459306a556f54@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> Hello,
>
> syzbot tried to test the proposed patch but the build/boot failed:
>
> failed to apply patch:
> checking file drivers/char/hw_random/virtio-rng.c
> patch: **** unexpected end of file in patch
>
>

It looks like something is wrong in my email client.

Let's try with attachment.

#syz test
git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next
From 7376165fc9fab71d9a9fc0de90be00dba123d879 Mon Sep 17 00:00:00 2001
From: Jason Wang <jasowang@redhat.com>
Date: Wed, 8 Jun 2022 10:33:28 +0800
Subject: [PATCH] virtio-rng: make device ready before making request
Content-type: text/plain

Signed-off-by: Jason Wang <jasowang@redhat.com>
---
 drivers/char/hw_random/virtio-rng.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/char/hw_random/virtio-rng.c b/drivers/char/hw_random/virtio-rng.c
index e856df7e285c..a6f3a8a2aca6 100644
--- a/drivers/char/hw_random/virtio-rng.c
+++ b/drivers/char/hw_random/virtio-rng.c
@@ -159,6 +159,8 @@ static int probe_common(struct virtio_device *vdev)
 		goto err_find;
 	}
 
+	virtio_device_ready(vdev);
+
 	/* we always have a pending entropy request */
 	request_entropy(vi);
 
-- 
2.25.1