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;
next 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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