netdev - Re: [RFC PATCH net-next 0/5] tcp: TCP tracer

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 for Android: free password hash cracker in your pocket

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

Message-ID: <5491EE01.5020406@gmail.com>
Date:	Wed, 17 Dec 2014 13:56:33 -0700
From:	David Ahern <dsahern@...il.com>
To:	Alexei Starovoitov <alexei.starovoitov@...il.com>,
	Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
CC:	Martin KaFai Lau <kafai@...com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"David S. Miller" <davem@...emloft.net>,
	Hannes Frederic Sowa <hannes@...essinduktion.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Lawrence Brakmo <brakmo@...com>, Josef Bacik <jbacik@...com>,
	Kernel Team <Kernel-team@...com>
Subject: Re: [RFC PATCH net-next 0/5] tcp: TCP tracer

On 12/17/14 1:42 PM, Alexei Starovoitov wrote:
>> It is not strictly necessary to carry vmlinux, that is just a probe
>> >point resolution time problem, solvable when generating a shell script,
>> >on the development machine, to insert the probes.
> on N development machines with kernels that
> would match worker machines...
> I'm not saying it's impossible, just operationally difficult.
> This is my understanding of Martin's use case.
>

That's the use case I am talking about ... N-different kernel versions 
and the probe definitions would need to be generated at *build* time of 
the kernel that uses a cross-compile environment. ie., can't assume 
there is a development machine running the kernel from which you can 
generate the probe definitions. This gets messy quick for embedded 
deployments.

David
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html