linux-kernel - Re: [PATCH v2 0/3] ubsan: Split out bounds checker

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Message-Id: <4B3C1889-DE01-43A5-B0BD-0CFC33A5315A@lca.pw>
Date:   Thu, 28 Nov 2019 11:14:38 -0500
From:   Qian Cai <cai@....pw>
To:     Dmitry Vyukov <dvyukov@...gle.com>
Cc:     Kees Cook <keescook@...omium.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Elena Petrova <lenaptr@...gle.com>,
        Alexander Potapenko <glider@...gle.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Arnd Bergmann <arnd@...db.de>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        kasan-dev <kasan-dev@...glegroups.com>,
        LKML <linux-kernel@...r.kernel.org>,
        kernel-hardening@...ts.openwall.com,
        syzkaller <syzkaller@...glegroups.com>
Subject: Re: [PATCH v2 0/3] ubsan: Split out bounds checker



> On Nov 28, 2019, at 5:39 AM, 'Dmitry Vyukov' via kasan-dev <kasan-dev@...glegroups.com> wrote:
> 
> But also LOCKDEP, KMEMLEAK, ODEBUG, FAULT_INJECTS, etc, all untested
> too. Nobody knows what they produce, and if they even still detect
> bugs, report false positives, etc.
> But that's the kernel testing story...

Yes, those work except PROVE_LOCKING where there are existing potential deadlocks are almost impossible to fix them properly now. I have been running those for linux-next daily with all those debugging on where you can borrow the configs etc.

https://github.com/cailca/linux-mm