[Ocfs2-devel] [PATCH] ocfs2/dlm: fix a variable overflow problem in dlmdomain.c

[piaojun <piaojun@huawei.com>]

On 2016/3/14 20:21, Joseph Qi wrote:
> 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@huawei.com>
>> Reviewed-by: Joseph Qi <joseph.qi@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.
> 
Hi Joseph Qi, Thanks for your prompt, I have sent a V2 patch to fix this.
>>
>>  	if (map_size != (BITS_TO_LONGS(O2NM_MAX_NODES) *
>>  			 sizeof(unsigned long))) {
>>
> 
> 
> 
> .
>