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| author |   Tian Tao <tiantao6@hisilicon.com> | 2020-11-11 09:14:48 +0800 |
|---|---|---|
| committer |   Michael S. Tsirkin <mst@redhat.com> | 2020-12-18 16:14:28 -0500 |
| commit | 0ab4b8901a8edda4fd1c2aded36192566d89353f (patch) | |
| tree | 08389bbf7a14a9920e519889d9ab8fe96ba9b54f /drivers/vhost | |
| parent | virtio-mem: Big Block Mode (BBM) - safe memory hotunplug (diff) | |
| download | linux-dev-0ab4b8901a8edda4fd1c2aded36192566d89353f.tar.xz linux-dev-0ab4b8901a8edda4fd1c2aded36192566d89353f.zip | |
vhost_vdpa: switch to vmemdup_user()
Replace opencoded alloc and copy with vmemdup_user()
Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Link: https://lore.kernel.org/r/1605057288-60400-1-git-send-email-tiantao6@hisilicon.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Diffstat (limited to 'drivers/vhost')
| -rw-r--r-- | drivers/vhost/vdpa.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c index 29ed4173f04e..ef688c8c0e0e 100644 --- a/drivers/vhost/vdpa.c +++ b/drivers/vhost/vdpa.c @@ -245,14 +245,10 @@ static long vhost_vdpa_set_config(struct vhost_vdpa *v, return -EFAULT; if (vhost_vdpa_config_validate(v, &config)) return -EINVAL; - buf = kvzalloc(config.len, GFP_KERNEL); - if (!buf) - return -ENOMEM; - if (copy_from_user(buf, c->buf, config.len)) { - kvfree(buf); - return -EFAULT; - } + buf = vmemdup_user(c->buf, config.len); + if (IS_ERR(buf)) + return PTR_ERR(buf); ops->set_config(vdpa, config.off, buf, config.len); |