diff mbox series

[v2,9/9] tools/power/x86/intel-speed-select: Fix memory leak

Message ID 20190905120311.15286-10-prarit@redhat.com (mailing list archive)
State Accepted, archived
Delegated to: Andy Shevchenko
Headers show
Series tools-power-x86-intel-speed-select: Fixes and updates for output | expand

Commit Message

Prarit Bhargava Sept. 5, 2019, 12:03 p.m. UTC
cpumasks are allocated by calling the alloc_cpu_mask() function and are
never free'd.  They should be free'd after the commands have run.

Fix the memory leaks by calling free_cpu_set().

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: David Arcari <darcari@redhat.com>
Cc: linux-kernel@vger.kernel.org
---
 tools/power/x86/intel-speed-select/isst-config.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

Comments

srinivas pandruvada Sept. 5, 2019, 7:42 p.m. UTC | #1
On Thu, 2019-09-05 at 08:03 -0400, Prarit Bhargava wrote:
> cpumasks are allocated by calling the alloc_cpu_mask() function and
> are
> never free'd.  They should be free'd after the commands have run.
> 
> Fix the memory leaks by calling free_cpu_set().
Good to fix this. But after one command execution the process will
exit.

Thanks,
Srinivas

> 
> Signed-off-by: Prarit Bhargava <prarit@redhat.com>
> Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
> Cc: David Arcari <darcari@redhat.com>
> Cc: linux-kernel@vger.kernel.org
> ---
>  tools/power/x86/intel-speed-select/isst-config.c | 16 +++++++++++---
> --
>  1 file changed, 11 insertions(+), 5 deletions(-)
> 
> diff --git a/tools/power/x86/intel-speed-select/isst-config.c
> b/tools/power/x86/intel-speed-select/isst-config.c
> index 78f0cebda1da..59753b3917bb 100644
> --- a/tools/power/x86/intel-speed-select/isst-config.c
> +++ b/tools/power/x86/intel-speed-select/isst-config.c
> @@ -603,6 +603,10 @@ static int isst_fill_platform_info(void)
>  
>  	close(fd);
>  
> +	if (isst_platform_info.api_version > supported_api_ver) {
> +		printf("Incompatible API versions; Upgrade of tool is
> required\n");
> +		return -1;
> +	}
>  	return 0;
>  }
>  
> @@ -1528,6 +1532,7 @@ static void cmdline(int argc, char **argv)
>  {
>  	int opt;
>  	int option_index = 0;
> +	int ret;
>  
>  	static struct option long_options[] = {
>  		{ "cpu", required_argument, 0, 'c' },
> @@ -1589,13 +1594,14 @@ static void cmdline(int argc, char **argv)
>  	set_max_cpu_num();
>  	set_cpu_present_cpu_mask();
>  	set_cpu_target_cpu_mask();
> -	isst_fill_platform_info();
> -	if (isst_platform_info.api_version > supported_api_ver) {
> -		printf("Incompatible API versions; Upgrade of tool is
> required\n");
> -		exit(0);
> -	}
> +	ret = isst_fill_platform_info();
> +	if (ret)
> +		goto out;
>  
>  	process_command(argc, argv);
> +out:
> +	free_cpu_set(present_cpumask);
> +	free_cpu_set(target_cpumask);
>  }
>  
>  int main(int argc, char **argv)
Prarit Bhargava Sept. 5, 2019, 8:56 p.m. UTC | #2
On 9/5/19 3:42 PM, Srinivas Pandruvada wrote:
> On Thu, 2019-09-05 at 08:03 -0400, Prarit Bhargava wrote:
>> cpumasks are allocated by calling the alloc_cpu_mask() function and
>> are
>> never free'd.  They should be free'd after the commands have run.
>>
>> Fix the memory leaks by calling free_cpu_set().
> Good to fix this. But after one command execution the process will
> exit.

Oh ... I didn't realize it was possible to execute multiple commands in one
call.  I'll go off and fix that and send a v3.

P.

> 
> Thanks,
> Srinivas
> 
>>
>> Signed-off-by: Prarit Bhargava <prarit@redhat.com>
>> Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
>> Cc: David Arcari <darcari@redhat.com>
>> Cc: linux-kernel@vger.kernel.org
>> ---
>>  tools/power/x86/intel-speed-select/isst-config.c | 16 +++++++++++---
>> --
>>  1 file changed, 11 insertions(+), 5 deletions(-)
>>
>> diff --git a/tools/power/x86/intel-speed-select/isst-config.c
>> b/tools/power/x86/intel-speed-select/isst-config.c
>> index 78f0cebda1da..59753b3917bb 100644
>> --- a/tools/power/x86/intel-speed-select/isst-config.c
>> +++ b/tools/power/x86/intel-speed-select/isst-config.c
>> @@ -603,6 +603,10 @@ static int isst_fill_platform_info(void)
>>  
>>  	close(fd);
>>  
>> +	if (isst_platform_info.api_version > supported_api_ver) {
>> +		printf("Incompatible API versions; Upgrade of tool is
>> required\n");
>> +		return -1;
>> +	}
>>  	return 0;
>>  }
>>  
>> @@ -1528,6 +1532,7 @@ static void cmdline(int argc, char **argv)
>>  {
>>  	int opt;
>>  	int option_index = 0;
>> +	int ret;
>>  
>>  	static struct option long_options[] = {
>>  		{ "cpu", required_argument, 0, 'c' },
>> @@ -1589,13 +1594,14 @@ static void cmdline(int argc, char **argv)
>>  	set_max_cpu_num();
>>  	set_cpu_present_cpu_mask();
>>  	set_cpu_target_cpu_mask();
>> -	isst_fill_platform_info();
>> -	if (isst_platform_info.api_version > supported_api_ver) {
>> -		printf("Incompatible API versions; Upgrade of tool is
>> required\n");
>> -		exit(0);
>> -	}
>> +	ret = isst_fill_platform_info();
>> +	if (ret)
>> +		goto out;
>>  
>>  	process_command(argc, argv);
>> +out:
>> +	free_cpu_set(present_cpumask);
>> +	free_cpu_set(target_cpumask);
>>  }
>>  
>>  int main(int argc, char **argv)
>
Prarit Bhargava Sept. 5, 2019, 9 p.m. UTC | #3
On 9/5/19 3:42 PM, Srinivas Pandruvada wrote:
> On Thu, 2019-09-05 at 08:03 -0400, Prarit Bhargava wrote:
>> cpumasks are allocated by calling the alloc_cpu_mask() function and
>> are
>> never free'd.  They should be free'd after the commands have run.
>>
>> Fix the memory leaks by calling free_cpu_set().
> Good to fix this. But after one command execution the process will
> exit.
> 

I'm sorry, I misunderstood your comment.  Yes, the process will exit after one
command :)

P.

> Thanks,
> Srinivas
> 
>>
>> Signed-off-by: Prarit Bhargava <prarit@redhat.com>
>> Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
>> Cc: David Arcari <darcari@redhat.com>
>> Cc: linux-kernel@vger.kernel.org
>> ---
>>  tools/power/x86/intel-speed-select/isst-config.c | 16 +++++++++++---
>> --
>>  1 file changed, 11 insertions(+), 5 deletions(-)
>>
>> diff --git a/tools/power/x86/intel-speed-select/isst-config.c
>> b/tools/power/x86/intel-speed-select/isst-config.c
>> index 78f0cebda1da..59753b3917bb 100644
>> --- a/tools/power/x86/intel-speed-select/isst-config.c
>> +++ b/tools/power/x86/intel-speed-select/isst-config.c
>> @@ -603,6 +603,10 @@ static int isst_fill_platform_info(void)
>>  
>>  	close(fd);
>>  
>> +	if (isst_platform_info.api_version > supported_api_ver) {
>> +		printf("Incompatible API versions; Upgrade of tool is
>> required\n");
>> +		return -1;
>> +	}
>>  	return 0;
>>  }
>>  
>> @@ -1528,6 +1532,7 @@ static void cmdline(int argc, char **argv)
>>  {
>>  	int opt;
>>  	int option_index = 0;
>> +	int ret;
>>  
>>  	static struct option long_options[] = {
>>  		{ "cpu", required_argument, 0, 'c' },
>> @@ -1589,13 +1594,14 @@ static void cmdline(int argc, char **argv)
>>  	set_max_cpu_num();
>>  	set_cpu_present_cpu_mask();
>>  	set_cpu_target_cpu_mask();
>> -	isst_fill_platform_info();
>> -	if (isst_platform_info.api_version > supported_api_ver) {
>> -		printf("Incompatible API versions; Upgrade of tool is
>> required\n");
>> -		exit(0);
>> -	}
>> +	ret = isst_fill_platform_info();
>> +	if (ret)
>> +		goto out;
>>  
>>  	process_command(argc, argv);
>> +out:
>> +	free_cpu_set(present_cpumask);
>> +	free_cpu_set(target_cpumask);
>>  }
>>  
>>  int main(int argc, char **argv)
>
diff mbox series

Patch

diff --git a/tools/power/x86/intel-speed-select/isst-config.c b/tools/power/x86/intel-speed-select/isst-config.c
index 78f0cebda1da..59753b3917bb 100644
--- a/tools/power/x86/intel-speed-select/isst-config.c
+++ b/tools/power/x86/intel-speed-select/isst-config.c
@@ -603,6 +603,10 @@  static int isst_fill_platform_info(void)
 
 	close(fd);
 
+	if (isst_platform_info.api_version > supported_api_ver) {
+		printf("Incompatible API versions; Upgrade of tool is required\n");
+		return -1;
+	}
 	return 0;
 }
 
@@ -1528,6 +1532,7 @@  static void cmdline(int argc, char **argv)
 {
 	int opt;
 	int option_index = 0;
+	int ret;
 
 	static struct option long_options[] = {
 		{ "cpu", required_argument, 0, 'c' },
@@ -1589,13 +1594,14 @@  static void cmdline(int argc, char **argv)
 	set_max_cpu_num();
 	set_cpu_present_cpu_mask();
 	set_cpu_target_cpu_mask();
-	isst_fill_platform_info();
-	if (isst_platform_info.api_version > supported_api_ver) {
-		printf("Incompatible API versions; Upgrade of tool is required\n");
-		exit(0);
-	}
+	ret = isst_fill_platform_info();
+	if (ret)
+		goto out;
 
 	process_command(argc, argv);
+out:
+	free_cpu_set(present_cpumask);
+	free_cpu_set(target_cpumask);
 }
 
 int main(int argc, char **argv)