linux-kernel - Re: [PATCH 1/2 v3] ftrace: don't allow IPMODIFY without proper compiler support

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

Message-ID: <alpine.LNX.2.10.1501161737320.1074@wotan.suse.de>
Date:	Fri, 16 Jan 2015 17:41:58 +0100 (CET)
From:	Jiri Kosina <jkosina@...e.cz>
To:	Steven Rostedt <rostedt@...dmis.org>
cc:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Josh Poimboeuf <jpoimboe@...hat.com>,
	Christoph Hellwig <hch@...radead.org>,
	linux-kernel@...r.kernel.org, live-patching@...r.kernel.org,
	linux-next@...r.kernel.org
Subject: Re: [PATCH 1/2 v3] ftrace: don't allow IPMODIFY without proper
 compiler support

On Fri, 16 Jan 2015, Steven Rostedt wrote:

> Instead, make live kernel patching fail to load if fentry isn't 
> supported. IOW, instead of ftrace_ipmodify_supported, have a 
> live_kernel_patching_supported that could be based on fentry being used 
> or not.

I can live with that, we are handling non-fentry case ourselves already.

You expressed that you would accept such patch for ftrace in a past, so I 
thought I'll move it out from livepatching to ftrace. But if you don't 
want it now, that's not a big issue, and handling the possible fallout 
stays the responsibility of ftrace_ops "owner".

-- 
Jiri Kosina
SUSE Labs
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/