Re: [Qemu-devel] [PATCH] rdma: fix memory leak

[Gonglei <arei.gonglei@huawei.com>]

On 2015/6/23 17:20, Markus Armbruster wrote:
> Markus Armbruster <armbru@redhat.com> writes:
> 
>> <arei.gonglei@huawei.com> writes:
>>
>>> From: Gonglei <arei.gonglei@huawei.com>
>>>
>>> Variable "r" going out of scope leaks the storage
>>> it points to in line 3268.
>>>
>>> Signed-off-by: Gonglei <arei.gonglei@huawei.com>
>>> ---
>>>  migration/rdma.c | 3 ++-
>>>  1 file changed, 2 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/migration/rdma.c b/migration/rdma.c
>>> index cf5de7e..de80860 100644
>>> --- a/migration/rdma.c
>>> +++ b/migration/rdma.c
>>> @@ -3262,12 +3262,13 @@ static const QEMUFileOps rdma_write_ops = {
>>>  
>>>  static void *qemu_fopen_rdma(RDMAContext *rdma, const char *mode)
>>>  {
>>> -    QEMUFileRDMA *r = g_malloc0(sizeof(QEMUFileRDMA));
>>> +    QEMUFileRDMA *r = NULL;
>>
>> Dead initialization, please drop.
>>
>>>  
>>>      if (qemu_file_mode_is_not_valid(mode)) {
>>>          return NULL;
>>>      }
>>>  
>>> +    r = g_malloc0(sizeof(QEMUFileRDMA));
>>>      r->rdma = rdma;
>>>  
>>>      if (mode[0] == 'w') {
>>
>> Looks good otherwise.
> 
> Since you're touching this, you could
> 
>     r = g_new0(QEMUFileRDMA, 1)
> 
> See commit 5839e53.
> 
I noticed this, but this whole file is using g_malloc, maybe using
another patch fix them is better. This path is just fix memory leak. :)

Regards,
-Gonglei