From: Peter Zijlstra <peterz@infradead.org>
To: Sasha Levin <sasha.levin@oracle.com>
Cc: paulus@samba.org, Ingo Molnar <mingo@kernel.org>,
acme@ghostprotocols.net, Tejun Heo <tj@kernel.org>,
cl@linux-foundation.org, LKML <linux-kernel@vger.kernel.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
trinity@vger.kernel.org
Subject: Re: perf, percpu: panic in account_event
Date: Mon, 12 Aug 2013 11:23:53 +0200 [thread overview]
Message-ID: <20130812092353.GC27162@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <520016D6.8010603@oracle.com>
On Mon, Aug 05, 2013 at 05:19:18PM -0400, Sasha Levin wrote:
> Hi all,
>
> While fuzzing with trinity inside a KVM tools guest running latest -next kernel,
> I've stumbled on the following spew.
>
> It seems to happen on the following line in account_event():
>
> if (event->attr.freq)
> atomic_inc(&per_cpu(perf_freq_events, cpu)); <--- here
>
Right, Frederic even send a fix for this already. I suppose holidays got
in the way of getting it merged quickly though, sorry for that.
Merged his fix, will hopefully get it into tip soon.
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WARNING: multiple messages have this Message-ID (diff)
From: Peter Zijlstra <peterz@infradead.org>
To: Sasha Levin <sasha.levin@oracle.com>
Cc: paulus@samba.org, Ingo Molnar <mingo@kernel.org>,
acme@ghostprotocols.net, Tejun Heo <tj@kernel.org>,
cl@linux-foundation.org, LKML <linux-kernel@vger.kernel.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
trinity@vger.kernel.org
Subject: Re: perf, percpu: panic in account_event
Date: Mon, 12 Aug 2013 11:23:53 +0200 [thread overview]
Message-ID: <20130812092353.GC27162@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <520016D6.8010603@oracle.com>
On Mon, Aug 05, 2013 at 05:19:18PM -0400, Sasha Levin wrote:
> Hi all,
>
> While fuzzing with trinity inside a KVM tools guest running latest -next kernel,
> I've stumbled on the following spew.
>
> It seems to happen on the following line in account_event():
>
> if (event->attr.freq)
> atomic_inc(&per_cpu(perf_freq_events, cpu)); <--- here
>
Right, Frederic even send a fix for this already. I suppose holidays got
in the way of getting it merged quickly though, sorry for that.
Merged his fix, will hopefully get it into tip soon.
next prev parent reply other threads:[~2013-08-12 9:23 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-05 21:19 perf, percpu: panic in account_event Sasha Levin
2013-08-05 21:19 ` Sasha Levin
2013-08-12 9:23 ` Peter Zijlstra [this message]
2013-08-12 9:23 ` Peter Zijlstra
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