Messages in this thread Patch in this message | | | From | Tian Tao <> | Subject | [PATCH] vhost_vdpa: switch to vmemdup_user() | Date | Wed, 11 Nov 2020 09:14:48 +0800 |
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Replace opencoded alloc and copy with vmemdup_user()
Signed-off-by: Tian Tao <tiantao6@hisilicon.com> --- drivers/vhost/vdpa.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-)
diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c index 2754f30..4c39583 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); -- 2.7.4
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