linux-kernel - Re: Long standing kernel warning: perfevents: irq loop stuck!

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Message-ID: <alpine.DEB.2.21.1908121933310.7324@nanos.tec.linutronix.de>
Date:   Mon, 12 Aug 2019 19:54:56 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Josh Hunt <joshhunt00@...il.com>
cc:     Andi Kleen <ak@...ux.intel.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Cong Wang <xiyou.wangcong@...il.com>,
        "Liang, Kan" <kan.liang@...el.com>, jolsa@...hat.com,
        bigeasy@...utronix.de, "H. Peter Anvin" <hpa@...or.com>,
        Ingo Molnar <mingo@...hat.com>, x86 <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: Long standing kernel warning: perfevents: irq loop stuck!

On Mon, 12 Aug 2019, Josh Hunt wrote:
> Was there any progress made on debugging this issue? We are still
> seeing it on 4.19.44:

I haven't seen anyone looking at this.

Can you please try the patch Ingo posted:

  https://lore.kernel.org/lkml/20150501070226.GB18957@gmail.com/

and if it fixes the issue decrease the value from 128 to the point where it
comes back, i.e. 128 -> 64 -> 32 ...

Thanks,

	tglx