From: Kevin Easton <kevin@guarana.org>
To: "Michael S. Tsirkin" <mst@redhat.com>,
Jason Wang <jasowang@redhat.com>,
kvm@vger.kernel.org, virtualization@lists.linux-foundation.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
syzkaller-bugs@googlegroups.com
Subject: [PATCH net] vhost: Use kzalloc() to allocate vhost_msg_node
Date: Fri, 27 Apr 2018 11:45:02 -0400 [thread overview]
Message-ID: <20180427154502.GA22544@la.guarana.org> (raw)
In-Reply-To: <000000000000a5b2b1056a86e98c@google.com>
The struct vhost_msg within struct vhost_msg_node is copied to userspace,
so it should be allocated with kzalloc() to ensure all structure padding
is zeroed.
Signed-off-by: Kevin Easton <kevin@guarana.org>
Reported-by: syzbot+87cfa083e727a224754b@syzkaller.appspotmail.com
---
drivers/vhost/vhost.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index f3bd8e9..1b84dcff 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -2339,7 +2339,7 @@ EXPORT_SYMBOL_GPL(vhost_disable_notify);
/* Create a new message. */
struct vhost_msg_node *vhost_new_msg(struct vhost_virtqueue *vq, int type)
{
- struct vhost_msg_node *node = kmalloc(sizeof *node, GFP_KERNEL);
+ struct vhost_msg_node *node = kzalloc(sizeof *node, GFP_KERNEL);
if (!node)
return NULL;
node->vq = vq;
--
2.8.1
next prev parent reply other threads:[~2018-04-27 15:45 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-23 16:56 KMSAN: uninit-value in _copy_to_iter (2) syzbot
2018-04-25 19:19 ` syzbot
2018-06-07 15:38 ` Michael S. Tsirkin
2018-06-07 15:38 ` syzbot
2018-06-07 16:25 ` Dmitry Vyukov via Virtualization
2018-06-07 17:04 ` syzbot
2018-06-07 17:43 ` Al Viro
2018-06-07 17:59 ` Michael S. Tsirkin
2018-06-07 18:04 ` Al Viro
2018-06-07 19:29 ` Michael S. Tsirkin
2018-06-07 17:10 ` Michael S. Tsirkin
2018-06-07 17:31 ` syzbot
2018-04-27 15:45 ` Kevin Easton [this message]
2018-04-27 16:05 ` [PATCH net] vhost: Use kzalloc() to allocate vhost_msg_node Michael S. Tsirkin
2018-04-27 16:11 ` Dmitry Vyukov via Virtualization
2018-04-27 16:15 ` Michael S. Tsirkin
2018-04-27 16:25 ` Dmitry Vyukov
2018-04-27 16:29 ` Dmitry Vyukov
2018-04-27 19:36 ` Michael S. Tsirkin
2018-04-29 8:10 ` Dmitry Vyukov
2018-04-28 1:07 ` Kevin Easton
2018-04-28 1:51 ` Kevin Easton
2018-04-28 2:23 ` Jason Wang
2018-05-07 13:03 ` Michael S. Tsirkin
2018-05-07 13:12 ` Dmitry Vyukov
2018-05-08 8:27 ` Kevin Easton
2018-05-29 22:19 ` [net] " Guenter Roeck
2018-05-30 3:01 ` Michael S. Tsirkin
2018-05-30 3:42 ` Guenter Roeck
2018-06-04 12:34 ` Dmitry Vyukov via Virtualization
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