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
WARNING: multiple messages have this Message-ID (diff)
From: zumeng.chen@windriver.com (Zumeng Chen) To: linux-arm-kernel@lists.infradead.org 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: 14+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-09-27 7:08 Zumeng Chen [this message] 2017-09-27 7:08 ` [PATCH ] cpufreq: ti-cpufreq: kfree opp_data when failure Zumeng Chen 2017-09-27 17:40 ` Viresh Kumar 2017-09-27 17:40 ` Viresh Kumar 2017-09-27 23:49 ` Zumeng Chen 2017-09-27 23:49 ` Zumeng Chen 2017-09-28 4:19 ` Viresh Kumar 2017-09-28 4:19 ` Viresh Kumar 2017-09-28 5:00 ` Zumeng Chen 2017-09-28 5:00 ` Zumeng Chen 2017-10-04 5:36 ` Viresh Kumar 2017-10-04 5:36 ` Viresh Kumar 2017-10-09 5:51 ` Zumeng Chen 2017-10-09 5:51 ` Zumeng Chen
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