Received: by 10.192.165.148 with SMTP id m20csp3867094imm; Mon, 7 May 2018 21:52:16 -0700 (PDT) X-Google-Smtp-Source: AB8JxZqxJPx/KHy3VC7sr91+PfFnxeflhZreYttRbIpePZVg9nFcOzKd7pfPu/gXUI2QcQYnW+6Q X-Received: by 2002:a65:4584:: with SMTP id o4-v6mr32275493pgq.213.1525755136207; Mon, 07 May 2018 21:52:16 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1525755136; cv=none; d=google.com; s=arc-20160816; b=s7uMKff9jU88dQWK+7unyDpgFovItaji0MfN+N/AtDBZq25A2z5k4m/aCAFTVVVJbw kklxIe8iD9UA3+lDuk/NgW0NUXrHjOM92C/fsBgskfjkJqpiMhwWRpqTY66+Z+mStGiu pVHUO5146GQyzKro7lzSR9ziZi/nBsGLLbBnxsydWaTHz0uR0Tr39kkjkGvg1wYItAdr OeSGsFmI3jCI0v2bRjTHB4/j7PZR8nTqZU2ZQbcSAA1sU+mEDg7r1czz+pdFwpCws8N7 ycrVa6yXTBjQ4sW6xUjrGeb1cST2sW/R9iHNcqHuvfjltyD4w0dkvoHewyRz7aAiZt+9 nAXw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:date:cc:to:from:subject:message-id :arc-authentication-results; bh=umo/SW530RhXBtpTviU7b7f4Vu9nNvn9vj9jOEPXqaE=; b=J1lnF99McH0fOdgqhf3Fe+Sgts6TKpD55p7+Z2rW5bZ20mV40B8kDImEwvn+qlaDRF fnzoLMm4E/+WuWVGXbMTfTANuTyaY/gDjnEzBfTIeeTggn9xVwJyctESyAfSZHkeihDH vKwLNVrsvbDgVYJoFHhljV+cxBrX7b1KU079VMWJkRSJroCvXCho5gEuZah6SEJeVqcj xUVP+AYxtBo5S3jqOSxiq3x3wIEm8IRSd8ZSTMjLYF4AtMkjByAAtW1hE4Oi32wTklXu uW1x5Sfw3Jf+nmnNYsOGyzBiVoYMV+VgimnP/8IDqrnU9kk8/qQ4vAIUc8kUFa9y2bDj 9xfw== 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 h14si23449167pfj.178.2018.05.07.21.52.01; Mon, 07 May 2018 21:52:16 -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 S1753886AbeEHEvj convert rfc822-to-8bit (ORCPT + 99 others); Tue, 8 May 2018 00:51:39 -0400 Received: from mout.gmx.net ([212.227.15.18]:59757 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753540AbeEHEvh (ORCPT ); Tue, 8 May 2018 00:51:37 -0400 Received: from homer.simpson.net ([185.191.216.25]) by mail.gmx.com (mrgmx003 [212.227.17.190]) with ESMTPSA (Nemesis) id 0LreCz-1eJV3x04zN-013R4Q; Tue, 08 May 2018 06:51:32 +0200 Message-ID: <1525755090.24338.1.camel@gmx.de> Subject: Re: bug in tag handling in blk-mq? From: Mike Galbraith To: Paolo Valente , Jens Axboe Cc: Christoph Hellwig , linux-block , Ulf Hansson , LKML , Linus Walleij , Oleksandr Natalenko Date: Tue, 08 May 2018 06:51:30 +0200 In-Reply-To: <84145CD7-B917-4B32-8A5C-310C1910DB71@linaro.org> References: <999DF2B3-4EE8-4BDF-89C5-EB0C2D8BF69E@linaro.org> <7760d23b-7a4c-a645-1c7a-da7569bb44dc@kernel.dk> <84145CD7-B917-4B32-8A5C-310C1910DB71@linaro.org> Content-Type: text/plain; charset="ISO-8859-15" X-Mailer: Evolution 3.22.6 Mime-Version: 1.0 Content-Transfer-Encoding: 8BIT X-Provags-ID: V03:K1:Hk17jElSXyi3HID4jPtNsRXIU8VENqhwY5uDtTnkW3lo8viJ8B0 0D9GIbCVAW7ADkTcN49cKeXy0aQAgRKaSUTgba269wRuJsaEH0B9BtnFzPRJzHevfQC4+Xr eKwm65eplHYu6Mjwa7P4GO7EL/egBucqbI8s4GFsZS99PC2axmWx+yg7sPjnZzPLsu6NzZg XGdMacObyqfRYYRsVyJHg== X-UI-Out-Filterresults: notjunk:1;V01:K0:zbBiMfXGLS0=:vL+qb5+3xMCq6Wh4mjRzvY IXXk7deCuQbbkTY3d9EwHV+1xido9QM2x824wOAhCP8pEcE+ji83cseUImPeA4WsbAxWtW0td 6Xx8ZmHKuhNbYYEeowdfvnAHwWNj2p/EWX6L7ThqjBZgCg/JRycSHDtnwrx6QCtWQmjVmvaAZ H3cdfaASyNcbKd1w0Qt+g6MaJ8DcF6t5yzj/wC2baY2/WdaXMdTpiwd7L8SF7mUlLQieZrfpB xcBp5TveR+QSoFDKJeL/TAnq3MJLyiTzjeQgMD4ZI9OzcHikJGWfp/ByehX6A94KB5J7AlEcW xx5whA/kfoKRugBo51puZH7rRwrz/nBaKeNAyn3Y+LNcTsvgVYMo6UPH/34Fvv68ERAkgpAi0 k3KQKyIlqQJl3cuDc4oI9B+T8YMaVd0dchJKfm+l/yq7IchXiN1s1er2eA1brwSvjgLLWVo/I /tcZUILGpnjPSvAAd9lXiW+fAYRascBk8xi1HENXKGd818atToBvG9cZ1QVAJT02QkGbItzeZ 3iFsW7PPV6z89IdXt15F3aMhUAl/ksRInPSUvT1GeuS7jNo+g0FGKRNi+h810pm9D/wVACvN1 3IaTALXv1an6Si/VMwjAH/C+R+TfGpM1SF19YL6DKbZWVjSEQkCvWAid8ar2o3xVw3jSmReNX CRkZcnM7dYTHIyFqanayKA5aW97GwQyn5ZvnFWhHPVabn/qDH+9VOKlwe5Ob3t4jU9IuFifOf k/T7SL+e5ripqnIpIDogJ+ekSStSM54U8QfTcz243yKU58BJCTKG/FT45GRnTYObeYelJ5jL/ P7UVxZ0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2018-05-07 at 20:02 +0200, Paolo Valente wrote: > > > > Is there a reproducer? Just building fat config kernels works for me. It was highly non- deterministic, but reproduced quickly twice in a row with Paolos hack. ?? > Ok Mike, I guess it's your turn now, for at least a stack trace. Sure. I'm deadlined ATM, but will get to it. -Mike