Commit 092c3def authored by Dan Carpenter's avatar Dan Carpenter Committed by Greg Kroah-Hartman

staging: lustre: obdclass: return -EFAULT if copy_from_user() fails

The copy_from_user() function returns the number of bytes which we
weren't able to copy.  We don't want to return that to the user but
instead we want to return -EFAULT.

Fixes: d7e09d03 ("staging: add Lustre file system client support")
Signed-off-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 3ca121c2
...@@ -180,7 +180,8 @@ int class_handle_ioctl(unsigned int cmd, unsigned long arg) ...@@ -180,7 +180,8 @@ int class_handle_ioctl(unsigned int cmd, unsigned long arg)
err = -ENOMEM; err = -ENOMEM;
goto out; goto out;
} }
err = copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1); if (copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1))
err = -EFAULT;
if (!err) if (!err)
err = lustre_cfg_sanity_check(lcfg, data->ioc_plen1); err = lustre_cfg_sanity_check(lcfg, data->ioc_plen1);
if (!err) if (!err)
......
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