linux-kernel - Re: [PATCH] perf/tracing/cpuhotplug: don't release cred_guard

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Date:   Tue, 6 Jun 2017 11:08:05 +0200
From:   "bigeasy@...utronix.de" <bigeasy@...utronix.de>
To:     "Levin, Alexander (Sasha Levin)" <alexander.levin@...izon.com>
Cc:     "peterz@...radead.org" <peterz@...radead.org>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "mingo@...nel.org" <mingo@...nel.org>,
        "paulmck@...ux.vnet.ibm.com" <paulmck@...ux.vnet.ibm.com>,
        "rostedt@...dmis.org" <rostedt@...dmis.org>,
        "mathieu.desnoyers@...icios.com" <mathieu.desnoyers@...icios.com>,
        "mhiramat@...nel.org" <mhiramat@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] perf/tracing/cpuhotplug: don't release cred_guard_mutex
 if not taken

On 2017-06-03 03:39:13 [+0000], Levin, Alexander (Sasha Levin) wrote:
> From: Alexander Levin <alexander.levin@...izon.com>
> 
> If we failed to acquire task's cred_guard_mutex we shouldn't proceed
> to release it in the error path.
> 
> Fixes: a63fbed776c ("perf/tracing/cpuhotplug: Fix locking order")
> Signed-off-by: Alexander Levin <alexander.levin@...izon.com>

Acked-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>

Sebastian