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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-Id: <20200829181520.ec52c425fc0a9d220559230a@kernel.org>
Date:   Sat, 29 Aug 2020 18:15:20 +0900
From:   Masami Hiramatsu <mhiramat@...nel.org>
To:     Cameron <cameron@...dycamel.com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        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, 28 Aug 2020 22:31:17 -0400
Cameron <cameron@...dycamel.com> wrote:

> 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.

Thanks for the check, but I personally would like to keep it separated
because the memory layouts of those in-kernel list-like data structures
can be changed by debug config option...

Thank you,


-- 
Masami Hiramatsu <mhiramat@...nel.org>