linux-kernel - Re: [RFC][PATCH 7/7] kprobes: Replace rp->free

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Message-ID: <CAFCw3dqDwP-RM20M7Uv=RS7aBHe=DLr3akhDY_XM8W0foiAEeQ@mail.gmail.com>
Date:   Fri, 28 Aug 2020 22:31:17 -0400
From:   Cameron <cameron@...dycamel.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     Masami Hiramatsu <mhiramat@...nel.org>,
        linux-kernel@...r.kernel.org, Eddy_Wu@...ndmicro.com,
        x86@...nel.org, davem@...emloft.net, rostedt@...dmis.org,
        naveen.n.rao@...ux.ibm.com, anil.s.keshavamurthy@...el.com,
        linux-arch@...r.kernel.org, oleg@...hat.com, will@...nel.org,
        paulmck@...nel.org
Subject: Re: [RFC][PATCH 7/7] kprobes: Replace rp->free_instance with freelist

On Fri, Aug 28, 2020 at 10:29 PM Cameron <cameron@...dycamel.com> wrote:
> I thought about this some more, and actually, it should be safe.

Although I should note that it's important that the flags/refcount are
not overwritten
even after the node is taken off the freelist.

Cameron