linux-kernel - Re: [PATCH] livepatch/module: make TAINT

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Message-ID: <87lgzleb8t.fsf@rustcorp.com.au>
Date:   Thu, 25 Aug 2016 13:44:10 +0930
From:   Rusty Russell <rusty@...tcorp.com.au>
To:     Jiri Kosina <jikos@...nel.org>,
        Josh Poimboeuf <jpoimboe@...hat.com>
Cc:     Jessica Yu <jeyu@...hat.com>, Miroslav Benes <mbenes@...e.cz>,
        Petr Mladek <pmladek@...e.com>, linux-kernel@...r.kernel.org,
        live-patching@...r.kernel.org, Chunyu Hu <chuhu@...hat.com>
Subject: Re: [PATCH] livepatch/module: make TAINT_LIVEPATCH module-specific

Jiri Kosina <jikos@...nel.org> writes:
> On Wed, 24 Aug 2016, Josh Poimboeuf wrote:
>
>> There's no reliable way to determine which module tainted the kernel
>> with CONFIG_LIVEPATCH.  For example, /sys/module/<klp module>/taint
>> doesn't report it.  Neither does the "mod -t" command in the crash tool.
>> 
>> Make it crystal clear who the guilty party is by converting
>> CONFIG_LIVEPATCH to a module taint flag.
>> 
>> This changes the behavior a bit: now the the flag gets set when the
>> module is loaded, rather than when it's enabled.
>> 
>> Reviewed-by: Chunyu Hu <chuhu@...hat.com>
>> Signed-off-by: Josh Poimboeuf <jpoimboe@...hat.com>
>
> I like this change.
>
> Rusty, in case you're okay with it as well, could you please either 
> provide your Ack so that I could take it through livepatching.git? 
> Alternatively, if you prefer to merge this through your tree, please feel 
> free to add

Happy to leave it to you :)

Acked-by: Rusty Russell <rusty@...tcorp.com.au>

Thanks,
Rusty.