From: Wang YanQing <udknight@gmail.com>
To: tomi.valkeinen@ti.com
Cc: spock@gentoo.org, linux-fbdev@vger.kernel.org,
FlorianSchandinat@gmx.de, linux-kernel@vger.kernel.org
Subject: [PATCH]video:uvesafb: Fix dereference NULL pointer code path
Date: Sat, 30 Mar 2013 02:53:30 +0000 [thread overview]
Message-ID: <20130330025330.GA25246@udknight> (raw)
platform_device_alloc could failed and return NULL,
we should check this before call platform_device_put.
Signed-off-by: Wang YanQing <udknight@gmail.com>
---
drivers/video/uvesafb.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/video/uvesafb.c b/drivers/video/uvesafb.c
index 2f8f82d..230bd45 100644
--- a/drivers/video/uvesafb.c
+++ b/drivers/video/uvesafb.c
@@ -1975,7 +1975,8 @@ static int __devinit uvesafb_init(void)
err = -ENOMEM;
if (err) {
- platform_device_put(uvesafb_device);
+ if (uvesafb_device)
+ platform_device_put(uvesafb_device);
platform_driver_unregister(&uvesafb_driver);
cn_del_callback(&uvesafb_cn_id);
return err;
--
1.7.11.1.116.g8228a23
WARNING: multiple messages have this Message-ID (diff)
From: Wang YanQing <udknight@gmail.com>
To: tomi.valkeinen@ti.com
Cc: spock@gentoo.org, linux-fbdev@vger.kernel.org,
FlorianSchandinat@gmx.de, linux-kernel@vger.kernel.org
Subject: [PATCH]video:uvesafb: Fix dereference NULL pointer code path
Date: Sat, 30 Mar 2013 10:53:30 +0800 [thread overview]
Message-ID: <20130330025330.GA25246@udknight> (raw)
platform_device_alloc could failed and return NULL,
we should check this before call platform_device_put.
Signed-off-by: Wang YanQing <udknight@gmail.com>
---
drivers/video/uvesafb.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/video/uvesafb.c b/drivers/video/uvesafb.c
index 2f8f82d..230bd45 100644
--- a/drivers/video/uvesafb.c
+++ b/drivers/video/uvesafb.c
@@ -1975,7 +1975,8 @@ static int __devinit uvesafb_init(void)
err = -ENOMEM;
if (err) {
- platform_device_put(uvesafb_device);
+ if (uvesafb_device)
+ platform_device_put(uvesafb_device);
platform_driver_unregister(&uvesafb_driver);
cn_del_callback(&uvesafb_cn_id);
return err;
--
1.7.11.1.116.g8228a23
next reply other threads:[~2013-03-30 2:53 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-30 2:53 Wang YanQing [this message]
2013-03-30 2:53 ` [PATCH]video:uvesafb: Fix dereference NULL pointer code path Wang YanQing
2013-04-02 10:34 ` Tomi Valkeinen
2013-04-02 10:34 ` Tomi Valkeinen
-- strict thread matches above, loose matches on Subject: below --
2013-01-27 6:13 Wang YanQing
2013-01-27 6:13 ` Wang YanQing
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