From: Josh Poimboeuf <jpoimboe@redhat.com>
To: Miroslav Benes <mbenes@suse.cz>
Cc: jikos@kernel.org, pmladek@suse.com, joe.lawrence@redhat.com,
live-patching@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] livepatch: Nullify obj->mod in klp_module_coming()'s error path
Date: Sun, 28 Jul 2019 14:45:33 -0500 [thread overview]
Message-ID: <20190728194533.rghqjzwxyc2vwdvm@treble> (raw)
In-Reply-To: <20190719122840.15353-2-mbenes@suse.cz>
On Fri, Jul 19, 2019 at 02:28:39PM +0200, Miroslav Benes wrote:
> klp_module_coming() is called for every module appearing in the system.
> It sets obj->mod to a patched module for klp_object obj. Unfortunately
> it leaves it set even if an error happens later in the function and the
> patched module is not allowed to be loaded.
>
> klp_is_object_loaded() uses obj->mod variable and could currently give a
> wrong return value. The bug is probably harmless as of now.
>
> Signed-off-by: Miroslav Benes <mbenes@suse.cz>
> Reviewed-by: Petr Mladek <pmladek@suse.com>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
--
Josh
next prev parent reply other threads:[~2019-07-28 19:45 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-19 12:28 [RFC PATCH 0/2] livepatch: Clear relocation targets on a module removal Miroslav Benes
2019-07-19 12:28 ` [PATCH 1/2] livepatch: Nullify obj->mod in klp_module_coming()'s error path Miroslav Benes
2019-07-28 19:45 ` Josh Poimboeuf [this message]
2019-08-19 11:26 ` Petr Mladek
2019-07-19 12:28 ` [RFC PATCH 2/2] livepatch: Clear relocation targets on a module removal Miroslav Benes
2019-07-22 9:33 ` Petr Mladek
2019-08-14 12:33 ` Miroslav Benes
2019-07-28 20:04 ` Josh Poimboeuf
2019-08-14 11:06 ` Miroslav Benes
2019-08-14 15:12 ` Josh Poimboeuf
2019-08-16 9:46 ` Petr Mladek
2019-08-22 22:36 ` Josh Poimboeuf
2019-08-23 8:13 ` Petr Mladek
2019-08-26 14:54 ` Josh Poimboeuf
2019-08-27 15:05 ` Joe Lawrence
2019-08-27 15:37 ` Josh Poimboeuf
2019-09-02 16:13 ` Miroslav Benes
2019-09-02 17:05 ` Joe Lawrence
2019-09-03 13:02 ` Miroslav Benes
2019-09-04 8:49 ` Petr Mladek
2019-09-04 16:26 ` Joe Lawrence
2019-09-05 2:50 ` Josh Poimboeuf
2019-09-05 11:09 ` Petr Mladek
2019-09-05 11:19 ` Jiri Kosina
2019-09-05 13:23 ` Josh Poimboeuf
2019-09-05 13:31 ` Jiri Kosina
2019-09-05 13:42 ` Josh Poimboeuf
2019-09-05 11:39 ` Joe Lawrence
2019-09-05 13:08 ` Josh Poimboeuf
2019-09-05 13:15 ` Josh Poimboeuf
2019-09-05 13:52 ` Petr Mladek
2019-09-05 14:28 ` Josh Poimboeuf
2019-09-05 12:03 ` Miroslav Benes
2019-09-05 12:35 ` Josh Poimboeuf
2019-09-05 12:49 ` Miroslav Benes
2019-09-05 11:52 ` Miroslav Benes
2019-09-05 2:32 ` Josh Poimboeuf
2019-09-05 12:16 ` Miroslav Benes
2019-09-05 12:54 ` Josh Poimboeuf
2019-09-06 12:51 ` Miroslav Benes
2019-09-06 15:38 ` Joe Lawrence
2019-09-06 16:45 ` Josh Poimboeuf
2019-08-26 13:44 ` Nicolai Stange
2019-08-26 15:02 ` Josh Poimboeuf
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