On Mon, Jul 17, 2017 at 10:13 AM, Dan Carpenter
<dan.carpenter@xxxxxxxxxx> wrote:
> If kmem_cache_zalloc() returns NULL then the INIT_LIST_HEAD(&data->links);
> will Oops. The callers aren't really prepared for NULL returns so it
> doesn't make a lot of difference in real life.
>
> Fixes: 5240d9f95dfe ("libceph: replace message data pointer with list")
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
>
> diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
> index 0c31035bbfee..b7cc615d42ef 100644
> --- a/net/ceph/messenger.c
> +++ b/net/ceph/messenger.c
> @@ -3203,8 +3203,10 @@ static struct ceph_msg_data *ceph_msg_data_create(enum ceph_msg_data_type type)
> return NULL;
>
> data = kmem_cache_zalloc(ceph_msg_data_cache, GFP_NOFS);
> - if (data)
> - data->type = type;
> + if (!data)
> + return NULL;
> +
> + data->type = type;
> INIT_LIST_HEAD(&data->links);
>
> return data;
Applied.
Thanks,
Ilya
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