linux-kernel - Re: [tip: core/kprobes] arm/ftrace: Use __patch

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Message-ID: <20200207102656.GS14946@hirez.programming.kicks-ass.net>
Date:   Fri, 7 Feb 2020 11:26:56 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Dmitry Osipenko <digetx@...il.com>
Cc:     linux-kernel@...r.kernel.org,
        tip-bot2 for Peter Zijlstra <tip-bot2@...utronix.de>,
        linux-tip-commits@...r.kernel.org, Will Deacon <will@...nel.org>,
        Thierry Reding <thierry.reding@...il.com>,
        Jon Hunter <jonathanh@...dia.com>,
        Andy Lutomirski <luto@...nel.org>,
        Borislav Petkov <bp@...en8.de>,
        Brian Gerst <brgerst@...il.com>,
        Denys Vlasenko <dvlasenk@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Mark Rutland <mark.rutland@....com>,
        Thomas Gleixner <tglx@...utronix.de>,
        ard.biesheuvel@...aro.org, james.morse@....com, rabin@....in,
        Ingo Molnar <mingo@...nel.org>, x86 <x86@...nel.org>,
        "linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [tip: core/kprobes] arm/ftrace: Use __patch_text()

On Fri, Feb 07, 2020 at 11:17:47AM +0100, Peter Zijlstra wrote:
> Is that crash with FTRACE=y or =n ?
> 
> This really isn't making much sense to me, Will, Mark, any clues?

Does the initial patch:

  https://lkml.kernel.org/r/20191111132458.220458362@infradead.org

work, or does it crash the exact same?