Am 30.01.2013 09:27, schrieb Dan Carpenter:
> On Wed, Jan 30, 2013 at 09:15:43AM +0100, walter harms wrote:
>>
>>
>> Am 30.01.2013 08:06, schrieb Dan Carpenter:
>>> There wasn't any error handling for this kzalloc().
>>>
>>> Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>
>>>
>>> diff --git a/drivers/scsi/osd/osd_initiator.c
>>> b/drivers/scsi/osd/osd_initiator.c
>>> index c06b8e5..d8293f2 100644
>>> --- a/drivers/scsi/osd/osd_initiator.c
>>> +++ b/drivers/scsi/osd/osd_initiator.c
>>> @@ -144,6 +144,10 @@ static int _osd_get_print_system_info(struct osd_dev
>>> *od,
>>> odi->osdname_len = get_attrs[a].len;
>>> /* Avoid NULL for memcmp optimization 0-length is good enough */
>>> odi->osdname = kzalloc(odi->osdname_len + 1, GFP_KERNEL);
>>> + if (!odi->osdname) {
>>> + ret = -ENOMEM;
>>> + goto out;
>>> + }
>>> if (odi->osdname_len)
>>> memcpy(odi->osdname, get_attrs[a].val_ptr, odi->osdname_len);
>>> OSD_INFO("OSD_NAME [%s]\n", odi->osdname);
>>> --
>>
>> this looks like strdup() ?
>>
>
> Maybe? It's a funny thing going on with the NUL terminator and I
> don't understand what the comment is about.
>
> It appears that normally "get_attrs[a].val_ptr" is a NUL terminated
> string but "get_attrs[a].len" does not count the terminator.
>
> Odd.
>
i have no clue what the programmer was thinking. if i read this correct
osdname is u8 *osdname; so a simple strdup() or strndup() would be ok
the comment seems to indicate that get_attrs[a].val_ptr could be NULL
but where is the check ?
Perhaps they are not using ascii here ? then a memdup(get_attrs[a].len)
would be better.
re,
wh
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