linux-kernel - Re: [PATCH] x86/process: Silence KASAN warnings in get

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Message-ID: <20151005131559.GB26329@nazgul.tnic>
Date:	Mon, 5 Oct 2015 15:15:59 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Andrey Ryabinin <aryabinin@...tuozzo.com>
Cc:	Dmitry Vyukov <dvyukov@...gle.com>, Ingo Molnar <mingo@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	"x86@...nel.org" <x86@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Andy Lutomirski <luto@...capital.net>,
	Andrey Konovalov <andreyknvl@...gle.com>,
	Kostya Serebryany <kcc@...gle.com>,
	Alexander Potapenko <glider@...gle.com>,
	kasan-dev <kasan-dev@...glegroups.com>,
	Denys Vlasenko <dvlasenk@...hat.com>,
	Andi Kleen <ak@...ux.intel.com>,
	Sasha Levin <sasha.levin@...cle.com>,
	Wolfram Gloger <wmglo@...t.med.uni-muenchen.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] x86/process: Silence KASAN warnings in get_wchan()

On Mon, Oct 05, 2015 at 02:46:30PM +0300, Andrey Ryabinin wrote:
> It's absolutely unusable:( https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67368
> If we add it here, it won't built because of: '__always_inline __read_once_size()'
> 
> But, I think I have the solution.
> We could have some blacklist - list of function names which we should be ignored.
> In kasan_report() we could resolve return address to function name and compare it with name in list.
> If name in list -> ignore report.

Sounds better. :)

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
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