linux-kernel - Re: [PATCH] livepatch: fix deferred module patching order

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Message-ID: <alpine.LNX.2.00.1501092228010.15299@pobox.suse.cz>
Date:	Fri, 9 Jan 2015 22:29:05 +0100 (CET)
From:	Jiri Kosina <jkosina@...e.cz>
To:	Josh Poimboeuf <jpoimboe@...hat.com>
cc:	Seth Jennings <sjenning@...hat.com>,
	Vojtech Pavlik <vojtech@...e.cz>,
	live-patching@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] livepatch: fix deferred module patching order

On Fri, 9 Jan 2015, Josh Poimboeuf wrote:

> When applying multiple patches to a module, if the module is loaded
> after the patches are loaded, the patches are applied in reverse order:
> 
>   $ insmod patch1.ko
>   [   43.172992] livepatch: enabling patch 'patch1'
> 
>   $ insmod patch2.ko
>   [   46.571563] livepatch: enabling patch 'patch2'
> 
>   $ modprobe nfsd
>   [   52.888922] livepatch: applying patch 'patch2' to loading module 'nfsd'
>   [   52.899847] livepatch: applying patch 'patch1' to loading module 'nfsd'
> 
> Fix the loading order by storing the klp_patches list in queue order.
> 
> Signed-off-by: Josh Poimboeuf <jpoimboe@...hat.com>

Applied and pushed out, thanks.

-- 
Jiri Kosina
SUSE Labs
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