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Date: Fri, 27 Apr 2018 11:45:02 -0400 From: Kevin Easton <kevin@...rana.org> To: "Michael S. Tsirkin" <mst@...hat.com>, Jason Wang <jasowang@...hat.com>, kvm@...r.kernel.org, virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com Subject: [PATCH net] vhost: Use kzalloc() to allocate vhost_msg_node 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@...rana.org> Reported-by: syzbot+87cfa083e727a224754b@...kaller.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
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