linux-kernel - [PATCH 5.4 072/388] module: Remove accidental change of module_enable

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Date:   Tue, 29 Sep 2020 12:56:43 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jessica Yu <jeyu@...nel.org>,
        Divya Indi <divya.indi@...cle.com>,
        Peter Zijlstra <peterz@...radead.org>,
        "Steven Rostedt (VMware)" <rostedt@...dmis.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.4 072/388] module: Remove accidental change of module_enable_x()

From: Steven Rostedt (VMware) <rostedt@...dmis.org>

[ Upstream commit af74262337faa65d5ac2944553437d3f5fb29123 ]

When pulling in Divya Indi's patch, I made a minor fix to remove unneeded
braces. I commited my fix up via "git commit -a --amend". Unfortunately, I
didn't realize I had some changes I was testing in the module code, and
those changes were applied to Divya's patch as well.

This reverts the accidental updates to the module code.

Cc: Jessica Yu <jeyu@...nel.org>
Cc: Divya Indi <divya.indi@...cle.com>
Reported-by: Peter Zijlstra <peterz@...radead.org>
Fixes: e585e6469d6f ("tracing: Verify if trace array exists before destroying it.")
Signed-off-by: Steven Rostedt (VMware) <rostedt@...dmis.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 kernel/module.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/kernel/module.c b/kernel/module.c
index 0e3743dd3a568..819c5d3b4c295 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -3753,6 +3753,7 @@ static int complete_formation(struct module *mod, struct load_info *info)
 
 	module_enable_ro(mod, false);
 	module_enable_nx(mod);
+	module_enable_x(mod);
 
 	/* Mark state as coming so strong_try_module_get() ignores us,
 	 * but kallsyms etc. can see us. */
@@ -3775,11 +3776,6 @@ static int prepare_coming_module(struct module *mod)
 	if (err)
 		return err;
 
-	/* Make module executable after ftrace is enabled */
-	mutex_lock(&module_mutex);
-	module_enable_x(mod);
-	mutex_unlock(&module_mutex);
-
 	blocking_notifier_call_chain(&module_notify_list,
 				     MODULE_STATE_COMING, mod);
 	return 0;
-- 
2.25.1