>>-----Original Message----- >>From: Kevin Hilman [mailto:[email protected]] >>Sent: Thursday, August 05, 2010 2:36 AM >>To: Gopinath, Thara >>Cc: [email protected]; [email protected]; Cousson, Benoit; Sripathy, >>Vishwanath; Sawant, Anand; >>Basak, Partha >>Subject: Re: [RFC 3/7] OMAP: Introduce voltage domain pointer and device >>specific set rate and get >>rate in device opp structures. >> >>"Gopinath, Thara" <[email protected]> writes: >> >>>>>> @@ -385,6 +380,11 @@ int opp_add(const struct omap_opp_def *opp_def) >>>>>> >>>>>> dev_opp->oh = oh; >>>>>> dev_opp->dev = &oh->od->pdev.dev; >>>>>> + dev_opp->vdd_name = kzalloc(strlen(opp_def->vdd_name) + >>>>>> 1, >>>>>> + GFP_KERNEL); >>>>>> + strcpy(dev_opp->vdd_name, opp_def->vdd_name); >>>>> >>>>>Since this is user-defined data/string, should probably have a max >>>>>strlen and use strncpy. >>> >>> I did not get this. What is the problem with the strlen here ? >> >>It's more of a paranoia issue than a technical issue. I don't like >>blindly using strlen on strings that are user-configurable. I guess, >>since they're coming from the OPP table, they're not terribly >>configurable, so it's probably not a big deal. >> >>However, since opp_add() is already doing one kzalloc, I think it's >>probably cleaner to just to make this field a fixed lenght and >>then use strncpy(): >> >>#define VDD_NAME_LEN 8 >> >>struct device_opp { >> ... >> char vdd_name[VDD_NAME_LEN]; >> ... >>}
Gotcha! Will incorporate in V2. Regards Thara -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
