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From: matthieu castet <castet.matthieu@free.fr>
To: Linux Kernel list <linux-kernel@vger.kernel.org>
Subject: [PATCH] fix leakes in request_firmware_nowait
Date: Thu, 10 Nov 2005 22:45:38 +0100	[thread overview]
Message-ID: <4373BF82.40003@free.fr> (raw)

[-- Attachment #1: Type: text/plain, Size: 185 bytes --]

Hi,


request_firmware_nowait wasn't checking return error and forgot to free 
memory in some case.

This patch should fix it.

Signed-off-by: Matthieu CASTET <castet.matthieu@free.fr>

[-- Attachment #2: firmware_nowait_leak --]
[-- Type: text/plain, Size: 965 bytes --]

Index: linux-2.6.14/drivers/base/firmware_class.c
===================================================================
--- linux-2.6.14.orig/drivers/base/firmware_class.c	2005-10-28 02:02:08.000000000 +0200
+++ linux-2.6.14/drivers/base/firmware_class.c	2005-11-10 22:42:56.000000000 +0100
@@ -511,13 +511,18 @@
 {
 	struct firmware_work *fw_work = arg;
 	const struct firmware *fw;
+	int ret;
 	if (!arg) {
 		WARN_ON(1);
 		return 0;
 	}
 	daemonize("%s/%s", "firmware", fw_work->name);
-	_request_firmware(&fw, fw_work->name, fw_work->device,
+	ret = _request_firmware(&fw, fw_work->name, fw_work->device,
 		fw_work->hotplug);
+	if (ret < 0) {
+		fw_work->cont(NULL, fw_work->context);
+		return ret;
+	}
 	fw_work->cont(fw, fw_work->context);
 	release_firmware(fw);
 	module_put(fw_work->module);
@@ -573,6 +578,8 @@
 
 	if (ret < 0) {
 		fw_work->cont(NULL, fw_work->context);
+		module_put(fw_work->module);
+		kfree(fw_work);
 		return ret;
 	}
 	return 0;

             reply	other threads:[~2005-11-10 21:45 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-11-10 21:45 matthieu castet [this message]
2005-11-10 21:48 ` [PATCH] fix leakes in request_firmware_nowait matthieu castet
2005-11-12  2:13   ` Andrew Morton
2005-11-12 13:48     ` matthieu castet

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