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Reply-To: alex.popov@linux.com
Subject: Re: [PATCH 1/1] stackleak: Register the 'stackleak_cleanup' pass
 before the 'mach' pass
From:   Alexander Popov <alex.popov@linux.com>
To:     Kees Cook <keescook@chromium.org>
Cc:     Kernel Hardening <kernel-hardening@lists.openwall.com>,
        Jann Horn <jannh@google.com>,
        Andy Lutomirski <luto@kernel.org>,
        Borislav Petkov <bp@alien8.de>,
        Thomas Gleixner <tglx@linutronix.de>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Steven Rostedt <rostedt@goodmis.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Masami Hiramatsu <mhiramat@kernel.org>,
        Florian Weimer <fweimer@redhat.com>,
        Richard Sandiford <richard.sandiford@arm.com>,
        Segher Boessenkool <segher@kernel.crashing.org>,
        amonakov@ispras.ru, Tycho Andersen <tycho@tycho.ws>,
        Laura Abbott <labbott@redhat.com>,
        Mark Rutland <mark.rutland@arm.com>,
        Emese Revfy <re.emese@gmail.com>,
        Thomas Garnier <thgarnie@google.com>,
        Ingo Molnar <mingo@kernel.org>,
        Will Deacon <will.deacon@arm.com>,
        Alexei Starovoitov <ast@kernel.org>,
        Ard Biesheuvel <ard.biesheuvel@linaro.org>,
        "H. Peter Anvin" <hpa@zytor.com>,
        "David S. Miller" <davem@davemloft.net>,
        linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
        gcc@gcc.gnu.org, LKML <linux-kernel@vger.kernel.org>
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Date:   Thu, 6 Dec 2018 18:10:31 +0300
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On 03.12.2018 21:25, Alexander Popov wrote:
> But I think it's better to register the 'stackleak_cleanup' pass just one pass
> earlier -- before the '*free_cfg' pass. I'll double check it for different
> versions of gcc on all supported architectures and return with a new patch.

I've tested this idea for gcc-5,6,7,8 on x86_64, x86_32, and arm64.
I'll send the patch soon.

Best regards,
Alexander