linux-kernel - Re: [PATCH 3/6] x86/mbm: Intel Memory B/W Monitoring enumeration and init

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 2 Mar 2016 09:59:47 -0800 (PST)
From:	Vikas Shivappa <vikas.shivappa@...el.com>
To:	Thomas Gleixner <tglx@...utronix.de>
cc:	Vikas Shivappa <vikas.shivappa@...ux.intel.com>,
	vikas.shivappa@...el.com, linux-kernel@...r.kernel.org,
	x86@...nel.org, hpa@...or.com, mingo@...nel.org,
	peterz@...radead.org, ravi.v.shankar@...el.com,
	tony.luck@...el.com, fenghua.yu@...el.com, h.peter.anvin@...el.com
Subject: Re: [PATCH 3/6] x86/mbm: Intel Memory B/W Monitoring enumeration
 and init



On Wed, 2 Mar 2016, Thomas Gleixner wrote:

> On Tue, 1 Mar 2016, Vikas Shivappa wrote:
>> @@ -1397,8 +1543,11 @@ static int __init intel_cqm_init(void)
>>  	__perf_cpu_notifier(intel_cqm_cpu_notifier);
>>  out:
>>  	cpu_notifier_register_done();
>> -	if (ret)
>> +	if (ret) {
>> +		mbm_enabled = false;
>> +		cqm_enabled = false;
>>  		kfree(str);
>
>
> Leaks mbm_local and mbm_total ....

Will fix. Thanks for pointing out. I missed the ones which are done at the 
next level of calls from the init. Will do a check on all the globals as well.

Vikas

>
>> +	}
>>
>>  	return ret;
>>  }
>> --
>> 1.9.1
>>
>>
>