2023-07-23 18:48:51

by Mike Christie

[permalink] [raw]
Subject: Re: [PATCH v2] scsi: iscsi: kfree_sensitive() in iscsi_session_free()

On 7/19/23 2:45 AM, 杜敏杰 wrote:
> session might contain private part of the password, so better use
> kfree_sensitive() to free it.
> In iscsi_session_free() use kfree_sensitive() to free session->password,
> session->password_in, session->username, session->username_in.
>
> Signed-off-by: Minjie Du <[email protected]>
> ---
> drivers/scsi/libiscsi.c | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
> index 0fda8905e..a307da898 100644
> --- a/drivers/scsi/libiscsi.c
> +++ b/drivers/scsi/libiscsi.c
> @@ -3132,10 +3132,10 @@ void iscsi_session_free(struct iscsi_cls_session *cls_session)
> struct module *owner = cls_session->transport->owner;
>
> iscsi_pool_free(&session->cmdpool);
> - kfree(session->password);
> - kfree(session->password_in);
> - kfree(session->username);
> - kfree(session->username_in);
> + kfree_sensitive(session->password);
> + kfree_sensitive(session->password_in);
> + kfree_sensitive(session->username);
> + kfree_sensitive(session->username_in);
> kfree(session->targetname);
> kfree(session->targetalias);
> kfree(session->initiatorname);

Reviewed-by: Mike Christie <[email protected]>