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Message-ID: <875zwyabac.fsf@oldenburg.str.redhat.com>
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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