lkml.org 
[lkml]   [2019]   [Oct]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[GIT PULL 3/7] intel_th: msu: Fix missing allocation failure check on a kstrndup
Date
From: Colin Ian King <colin.king@canonical.com>

Commit 615c164da0eb ("intel_th: msu: Introduce buffer interface") forgot
to add a NULL pointer check for the value returned from kstrdup(), which
will be troublesome if the allocation fails.

Fix that by adding the check.

Addresses-Coverity: ("Dereference null return")
Fixes: 615c164da0eb ("intel_th: msu: Introduce buffer interface")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
[alexander.shishkin: amended the commit message]
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/lkml/20190726120421.9650-1-colin.king@canonical.com/
---
drivers/hwtracing/intel_th/msu.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/hwtracing/intel_th/msu.c b/drivers/hwtracing/intel_th/msu.c
index 51021020fa3f..201a166fdff5 100644
--- a/drivers/hwtracing/intel_th/msu.c
+++ b/drivers/hwtracing/intel_th/msu.c
@@ -1848,6 +1848,9 @@ mode_store(struct device *dev, struct device_attribute *attr, const char *buf,
len = cp - buf;

mode = kstrndup(buf, len, GFP_KERNEL);
+ if (!mode)
+ return -ENOMEM;
+
i = match_string(msc_mode, ARRAY_SIZE(msc_mode), mode);
if (i >= 0)
goto found;
--
2.23.0
\
 
 \ /
  Last update: 2019-10-28 08:08    [W:0.084 / U:0.452 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site