[Ocfs2-devel] [PATCH] ocfs2/dlm: fix a variable overflow problem in dlmdomain.c
Joseph Qi
joseph.qi at huawei.com
Mon Mar 14 05:21:50 PDT 2016
On 2016/3/14 19:57, piaojun wrote:
> In dlm_send_join_cancels(), unsigned int node is assigned -1, this will
> lead variable overflow. Although this won't cause any runtime problem,
> the code looks a little uncoordinated.
>
> Signed-off-by: Jun Piao <piaojun at huawei.com>
> Reviewed-by: Joseph Qi <joseph.qi at huawei.com>
> ---
> dlm/dlmdomain.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/dlm/dlmdomain.c b/dlm/dlmdomain.c
> index 2ee7fe7..61bafa7 100644
> --- a/dlm/dlmdomain.c
> +++ b/dlm/dlmdomain.c
> @@ -1395,8 +1395,7 @@ static int dlm_send_join_cancels(struct dlm_ctxt *dlm,
> unsigned long *node_map,
> unsigned int map_size)
> {
> - int status, tmpstat;
> - unsigned int node;
> + int status, tmpstat, int node;
This is not right. NAK.
>
> if (map_size != (BITS_TO_LONGS(O2NM_MAX_NODES) *
> sizeof(unsigned long))) {
>
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