From: Wang YanQing <udknight@gmail.com>
To: FlorianSchandinat@gmx.de
Cc: spock@gentoo.org, linux-fbdev@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH]video:uvesafb: Fix dereference NULL pointer code path
Date: Sun, 27 Jan 2013 06:13:32 +0000 [thread overview]
Message-ID: <20130127061331.GA4314@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:[~2013-01-27 6:13 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-27 6:13 Wang YanQing [this message]
-- strict thread matches above, loose matches on Subject: below --
2013-03-30 2:53 [PATCH]video:uvesafb: Fix dereference NULL pointer code path Wang YanQing
2013-04-02 10:34 ` Tomi Valkeinen
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