From: ilia.lin@gmail.com
To: Ilia Lin <ilia.lin@gmail.com>, Ilia Lin <ilialin@codeaurora.org>,
"Rafael J . Wysocki" <rjw@rjwysocki.net>,
Viresh Kumar <viresh.kumar@linaro.org>
Cc: Dan Carpenter <dan.carpenter@oracle.com>,
linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] cpufreq: kryo: Fix possible error code dereference
Date: Thu, 14 Jun 2018 22:29:21 +0200 [thread overview]
Message-ID: <20180614202921.32535-1-ilia.lin@gmail.com> (raw)
From: Ilia Lin <ilia.lin@gmail.com>
In event of error returned by the nvmem_cell_read() non-pointer value
may be dereferenced. Fix this with error handling.
Signed-off-by: Ilia Lin <ilia.lin@gmail.com>
---
drivers/cpufreq/qcom-cpufreq-kryo.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/cpufreq/qcom-cpufreq-kryo.c b/drivers/cpufreq/qcom-cpufreq-kryo.c
index d049fe4b80c4..5e9511223ce9 100644
--- a/drivers/cpufreq/qcom-cpufreq-kryo.c
+++ b/drivers/cpufreq/qcom-cpufreq-kryo.c
@@ -115,6 +115,8 @@ static int qcom_cpufreq_kryo_probe(struct platform_device *pdev)
speedbin = nvmem_cell_read(speedbin_nvmem, &len);
nvmem_cell_put(speedbin_nvmem);
+ if (IS_ERR(speedbin))
+ return PTR_ERR(speedbin);
switch (msm8996_version) {
case MSM8996_V3:
--
2.11.0
next reply other threads:[~2018-06-14 20:29 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-14 20:29 ilia.lin [this message]
2018-06-15 2:46 ` [PATCH] cpufreq: kryo: Fix possible error code dereference Viresh Kumar
2018-06-17 19:58 ` [PATCH v2] " ilia.lin
2018-06-18 4:55 ` Viresh Kumar
2018-06-21 13:22 ` Rafael J. Wysocki
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20180614202921.32535-1-ilia.lin@gmail.com \
--to=ilia.lin@gmail.com \
--cc=dan.carpenter@oracle.com \
--cc=ilialin@codeaurora.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pm@vger.kernel.org \
--cc=rjw@rjwysocki.net \
--cc=viresh.kumar@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox