Received: by 2002:a25:8b12:0:0:0:0:0 with SMTP id i18csp16092ybl; Mon, 12 Aug 2019 10:56:16 -0700 (PDT) X-Google-Smtp-Source: APXvYqy+48JoLxPehby6oDDFX3YL2bh8/VPtAmeH8eY1nLlYpRHxb7jjD8yqkfnCPb/LvxKbVx3b X-Received: by 2002:a17:902:b949:: with SMTP id h9mr31389608pls.120.1565632576066; Mon, 12 Aug 2019 10:56:16 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1565632576; cv=none; d=google.com; s=arc-20160816; b=vAp6u+hpuajnk8DG/paVvITGijyGMwP14j+U5nEq2t+P13Qt/C9wQr80RyNxpcllqy +TIcA9iRjUF2Y9tfpdZ6z21Robdkxi7lCi1zhJOeq7JpQkE+8dFfDuUb3RyUszDCT4j/ PRq/zfP7AtZWkaeOqpeVXfIKx13dk9XoYV2u5GhAaiClGCTxBxUg+GfV3zh3dJ7RS9q0 b7BmrMSfx3udWRSmnqe4JQS2Bvw8lSKCXU8ZvinsBmJ7avZ+zljZxgyFWiDW8ArNb07m YJ3mZ7SL6/fE1b1vTK5ycH1D3Z4fKDleFaD0fMyxe7fs2nMEv3u10nmLr1bAE3+G4w5M sPKw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:user-agent:references :message-id:in-reply-to:subject:cc:to:from:date; bh=xymAHbVNfSX/KCm5FNurPlbhm+IhDlJOTSmfzhUMFTA=; b=ppFoF9VsnsW6CupkPGPlB388RdH/bSfYdUie6bE0LpOwxBMg2di/bpVBCHfw1cQjHz rbNw62CptBkY0zUxZzoPg9A1KtWdJxiTjOcNZRqJPVseH4G9AlVGOnhndmaiU+A153rd mlqmuHI9OjsjtE6C1IbWEaVyPm7PBsZC07tigH+2vo0b/W5ZVoZZWdlXsqpYwppHJumG kYUl7Qx9FBqDtKuZfXE5KSB7/gsi3+M2rPOFvkheXql6X34b0EHfyQq3Go/mUiWl0eJG RZfMnpk0G31CkRB7JFGquzAY37HHYiqzvRO+OFDyjmCB1pUTxOodbjtA5XIpreHjvE+T duuQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id i2si845814plt.100.2019.08.12.10.56.00; Mon, 12 Aug 2019 10:56:16 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726519AbfHLRzR (ORCPT + 99 others); Mon, 12 Aug 2019 13:55:17 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:60461 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726185AbfHLRzR (ORCPT ); Mon, 12 Aug 2019 13:55:17 -0400 Received: from p200300ddd71876867e7a91fffec98e25.dip0.t-ipconnect.de ([2003:dd:d718:7686:7e7a:91ff:fec9:8e25]) by Galois.linutronix.de with esmtpsa (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1hxEX8-0002xp-C9; Mon, 12 Aug 2019 19:55:02 +0200 Date: Mon, 12 Aug 2019 19:54:56 +0200 (CEST) From: Thomas Gleixner To: Josh Hunt cc: Andi Kleen , Peter Zijlstra , Cong Wang , "Liang, Kan" , jolsa@redhat.com, bigeasy@linutronix.de, "H. Peter Anvin" , Ingo Molnar , x86 , LKML Subject: Re: Long standing kernel warning: perfevents: irq loop stuck! In-Reply-To: Message-ID: References: <20180223121456.GZ25201@hirez.programming.kicks-ass.net> <20180226203937.GA21543@tassilo.jf.intel.com> User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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