linux-kernel - Re: [PATCH v1 09/11] x86: perf: intel

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:	Fri, 07 Feb 2014 11:03:59 +0200
From:	Alexander Shishkin <alexander.shishkin@...ux.intel.com>
To:	Andi Kleen <ak@...ux.intel.com>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
	Frederic Weisbecker <fweisbec@...il.com>,
	Mike Galbraith <efault@....de>,
	Paul Mackerras <paulus@...ba.org>,
	Stephane Eranian <eranian@...gle.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Matt Fleming <matt.fleming@...el.com>
Subject: Re: [PATCH v1 09/11] x86: perf: intel_pt: Add core dump functionality

Andi Kleen <ak@...ux.intel.com> writes:

>>  			   char *buf)
>> @@ -114,6 +143,7 @@ static ssize_t pt_cap_store(struct device *cdev,
>>  		return -EINVAL;
>>  
>>  	pt_cap_set(cap, new);
>> +	pt_cap_string();
>
> Don't we need some lock here? Otherwise it may leak memory with racing writes
> and become inconsistent.

Good point.

Regards,
--
Alex
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/