lkml.org 
[lkml]   [2022]   [Apr]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 3/3] mtd: rawnand: tmio: check return value after calling platform_get_resource()
Date
It will cause null-ptr-deref if platform_get_resource() returns NULL,
we need check the return value.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
---
drivers/mtd/nand/raw/tmio_nand.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/mtd/nand/raw/tmio_nand.c b/drivers/mtd/nand/raw/tmio_nand.c
index de8e919d0ebe..8f1a42bf199c 100644
--- a/drivers/mtd/nand/raw/tmio_nand.c
+++ b/drivers/mtd/nand/raw/tmio_nand.c
@@ -390,6 +390,9 @@ static int tmio_probe(struct platform_device *dev)
if (data == NULL)
dev_warn(&dev->dev, "NULL platform data!\n");

+ if (!ccr || !fcr)
+ return -EINVAL;
+
tmio = devm_kzalloc(&dev->dev, sizeof(*tmio), GFP_KERNEL);
if (!tmio)
return -ENOMEM;
--
2.25.1
\
 
 \ /
  Last update: 2022-04-26 11:04    [W:0.040 / U:0.364 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site