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Date: Mon, 5 Jan 2015 15:22:39 -0800 From: Andy Lutomirski <luto@...capital.net> To: Dave Hansen <dave.hansen@...ux.intel.com> Cc: Andi Kleen <andi@...stfloor.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, X86 ML <x86@...nel.org>, Thomas Gleixner <tglx@...utronix.de> Subject: Re: [PATCH 3.19 3/3] x86, mpx: Change the MPX enable/disable API to arch_prctl On Mon, Jan 5, 2015 at 3:10 PM, Dave Hansen <dave.hansen@...ux.intel.com> wrote: > On 01/05/2015 03:04 PM, Andy Lutomirski wrote: >>> > Yeah, I'd _really_ prefer not to change it. The code is in a gcc >>> > branch, but is getting pulled in to the 5.0 release. We've got >>> > *absolutely* no shortage of prctl numbers. >> We do, however, have a severe shortage of sanity in the prctl implementation. >> >> Anyway, if it's actually a problem to change it, I have no real >> problem keeping it, but I think we *really* need to validate the rest >> of the arguments at the very least. > > Do you mean just adding a pair of > > if (arg2 || arg3 || arg4 || arg5) > return -EINVAL; > > checks? Exactly. Thanks, Andy > > That's perfectly fine with me. I'm happy to queue up a patch to do just > that if that's what you're going for. -- Andy Lutomirski AMA Capital Management, LLC -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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