linux-kernel - [PATCH AUTOSEL 4.19 03/10] module: set MODULE_STATE

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Message-Id: <20201230130422.3637448-3-sashal@kernel.org>
Date:   Wed, 30 Dec 2020 08:04:15 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Miroslav Benes <mbenes@...e.cz>, Jessica Yu <jeyu@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH AUTOSEL 4.19 03/10] module: set MODULE_STATE_GOING state when a module fails to load

From: Miroslav Benes <mbenes@...e.cz>

[ Upstream commit 5e8ed280dab9eeabc1ba0b2db5dbe9fe6debb6b5 ]

If a module fails to load due to an error in prepare_coming_module(),
the following error handling in load_module() runs with
MODULE_STATE_COMING in module's state. Fix it by correctly setting
MODULE_STATE_GOING under "bug_cleanup" label.

Signed-off-by: Miroslav Benes <mbenes@...e.cz>
Signed-off-by: Jessica Yu <jeyu@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 kernel/module.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/module.c b/kernel/module.c
index d05e1bfdd3559..8dbe0ff22134e 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -3841,6 +3841,7 @@ static int load_module(struct load_info *info, const char __user *uargs,
 				     MODULE_STATE_GOING, mod);
 	klp_module_going(mod);
  bug_cleanup:
+	mod->state = MODULE_STATE_GOING;
 	/* module_bug_cleanup needs module_mutex protection */
 	mutex_lock(&module_mutex);
 	module_bug_cleanup(mod);
-- 
2.27.0