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From: Jiri Slaby <jslaby@suse.cz>
To: Seth Jennings <sjenning@redhat.com>,
	Josh Poimboeuf <jpoimboe@redhat.com>,
	Jiri Kosina <jkosina@suse.cz>, Vojtech Pavlik <vojtech@suse.cz>,
	Steven Rostedt <rostedt@goodmis.org>,
	Petr Mladek <pmladek@suse.cz>, Miroslav Benes <mbenes@suse.cz>,
	Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Christoph Hellwig <hch@infradead.org>,
	Greg KH <gregkh@linuxfoundation.org>,
	Andy Lutomirski <luto@amacapital.net>,
	live-patching@vger.kernel.org, x86@kernel.org, kpatch@redhat.com,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCHv5 2/3] kernel: add support for live patching
Date: Fri, 05 Dec 2014 18:55:04 +0100	[thread overview]
Message-ID: <5481F178.9000306@suse.cz> (raw)
In-Reply-To: <1417708411-23655-3-git-send-email-sjenning@redhat.com>

On 12/04/2014, 04:53 PM, Seth Jennings wrote:
...
> --- /dev/null
> +++ b/kernel/livepatch/core.c
> @@ -0,0 +1,902 @@
...
> +static struct kobj_type klp_ktype_patch = {
> +	.sysfs_ops = &kobj_sysfs_ops,
> +	.default_attrs = klp_patch_attrs
> +};

Hi, I seem to have only a single comment here. If I am looking
correctly, the last put on this kobject will cause kobject_cleanup to
generate a warning:
   "kobject: '%s' (%p): does not have a release() "
   "function, it is broken and must be fixed.\n",

There should be some .release. IMO, this is a place where we will
release the module with the patch. So the .release hook should contain
something like a commented out module_put() with a pointer to
klp_register_patch. (Or be empty at worst.)

thanks,
-- 
js
suse labs

  reply	other threads:[~2014-12-05 17:55 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-12-04 15:53 [PATCHv5 0/3] Kernel Live Patching Seth Jennings
2014-12-04 15:53 ` [PATCHv5 1/3] kernel: add TAINT_LIVEPATCH Seth Jennings
2014-12-04 15:53 ` [PATCHv5 2/3] kernel: add support for live patching Seth Jennings
2014-12-05 17:55   ` Jiri Slaby [this message]
2014-12-05 19:50     ` Josh Poimboeuf
2014-12-09 17:56   ` Petr Mladek
2014-12-04 15:53 ` [PATCHv5 3/3] samples: add sample live patching module Seth Jennings

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