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Date: Thu, 15 Nov 2018 11:24:27 +0100
From: Florian Weimer <fweimer@...hat.com>
To: Alexander Popov <alex.popov@...ux.com>
Cc: Kees Cook <keescook@...omium.org>,  Ingo Molnar <mingo@...nel.org>,  Andy Lutomirski <luto@...nel.org>,  Tycho Andersen <tycho@...ho.ws>,  Laura Abbott <labbott@...hat.com>,  Mark Rutland <mark.rutland@....com>,  Ard Biesheuvel <ard.biesheuvel@...aro.org>,  Borislav Petkov <bp@...en8.de>,  Richard Sandiford <richard.sandiford@....com>,  Thomas Gleixner <tglx@...utronix.de>,  "H . Peter Anvin" <hpa@...or.com>,  Peter Zijlstra <a.p.zijlstra@...llo.nl>,  Emese Revfy <re.emese@...il.com>,  Thomas Garnier <thgarnie@...gle.com>,  Alexei Starovoitov <ast@...nel.org>,  Masami Hiramatsu <mhiramat@...nel.org>,  "David S . Miller" <davem@...emloft.net>,  Steven Rostedt <rostedt@...dmis.org>,  Dave Hansen <dave.hansen@...ux.intel.com>,  Will Deacon <will.deacon@....com>,  "kernel-hardening\@lists.openwall.com" <kernel-hardening@...ts.openwall.com>,  linux-arm-kernel@...ts.infradead.org,  gcc-bugs@....gnu.org,  gcc-help@....gnu.org
Subject: Re: Investigating a stack state mismatch in Linux kernel

* Alexander Popov:

> Of course, there is a naive solution for this issue -- just skip stackleak
> instrumentation for acpi_duplicate_processor_id(). But it would be great to find
> out the reasons behind this compiler behavior. It might help to create a better
> solution.

Please show us the RTL dumps with both compilers, both before and after
the plugin pass.

Thanks,
Florian

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