From: Zumeng Chen <zumeng.chen@windriver.com>
To: linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-omap@vger.kernel.org
Cc: tony@atomide.com, viresh.kumar@linaro.org, rjw@rjwysocki.net,
d-gerlach@ti.com
Subject: [PATCH ] cpufreq: ti-cpufreq: kfree opp_data when failure
Date: Wed, 27 Sep 2017 15:08:17 +0800 [thread overview]
Message-ID: <1506496097-30852-1-git-send-email-zumeng.chen@windriver.com> (raw)
From: Zumeng Chen <zumeng.chen@gmail.com>
memory leakage was found by kmemleak. opp_data needs to be freed
when failure, including fail_put_node.
unreferenced object 0xccdd4c40 (size 64):
comm "swapper", pid 1, jiffies 4294938465 (age 888.520s)
hex dump (first 32 bytes):
00 7c 00 c1 98 69 d8 ce 00 24 03 ce 00 24 03 ce .|...i...$...$..
20 35 23 c1 00 00 00 00 00 00 00 00 00 00 00 00 5#.............
backtrace:
[<c028fb64>] kmem_cache_alloc_trace+0x2c4/0x3cc
[<c076d5f0>] ti_cpufreq_probe+0x6c/0x334
[<c068d6e4>] platform_drv_probe+0x60/0xc0
[<c068b384>] driver_probe_device+0x218/0x2c4
[<c068b5a4>] __device_attach_driver+0xa8/0xdc
[<c0689340>] bus_for_each_drv+0x70/0xa4
[<c068b020>] __device_attach+0xc0/0x124
[<c068b634>] device_initial_probe+0x1c/0x20
[<c068a3b8>] bus_probe_device+0x94/0x9c
[<c0688300>] device_add+0x404/0x590
[<c068d408>] platform_device_add+0x11c/0x230
[<c068df40>] platform_device_register_full+0x10c/0x128
[<c076d578>] ti_cpufreq_init+0x44/0x50
[<c01017c4>] do_one_initcall+0x54/0x180
[<c0e00fe0>] kernel_init_freeable+0x270/0x33c
[<c093f2bc>] kernel_init+0x18/0x124
Signed-off-by: Zumeng Chen <zumeng.chen@gmail.com>
---
drivers/cpufreq/ti-cpufreq.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/cpufreq/ti-cpufreq.c b/drivers/cpufreq/ti-cpufreq.c
index 4bf47de..ffcddcd 100644
--- a/drivers/cpufreq/ti-cpufreq.c
+++ b/drivers/cpufreq/ti-cpufreq.c
@@ -217,7 +217,8 @@ static int ti_cpufreq_init(void)
opp_data->cpu_dev = get_cpu_device(0);
if (!opp_data->cpu_dev) {
pr_err("%s: Failed to get device for CPU0\n", __func__);
- return -ENODEV;
+ ret = ENODEV;
+ goto free_opp_data;
}
opp_data->opp_node = dev_pm_opp_of_get_opp_desc_node(opp_data->cpu_dev);
@@ -262,6 +263,8 @@ static int ti_cpufreq_init(void)
fail_put_node:
of_node_put(opp_data->opp_node);
+free_opp_data:
+ kfree(opp_data);
return ret;
}
--
2.7.4
next reply other threads:[~2017-09-27 7:08 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-27 7:08 Zumeng Chen [this message]
2017-09-27 17:40 ` [PATCH ] cpufreq: ti-cpufreq: kfree opp_data when failure Viresh Kumar
2017-09-27 23:49 ` Zumeng Chen
2017-09-28 4:19 ` Viresh Kumar
2017-09-28 5:00 ` Zumeng Chen
2017-10-04 5:36 ` Viresh Kumar
2017-10-09 5:51 ` Zumeng Chen
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=1506496097-30852-1-git-send-email-zumeng.chen@windriver.com \
--to=zumeng.chen@windriver.com \
--cc=d-gerlach@ti.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-omap@vger.kernel.org \
--cc=linux-pm@vger.kernel.org \
--cc=rjw@rjwysocki.net \
--cc=tony@atomide.com \
--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;
as well as URLs for NNTP newsgroup(s).