From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 94228C432C0 for ; Tue, 3 Dec 2019 15:42:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 65A112070A for ; Tue, 3 Dec 2019 15:42:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1575387779; bh=HCKyqnJ8KndkesApi5P/dMyTOyK6e1sFgOC12OV+AJs=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=WXUNKEtFg+Bz4WrGoTGGToMZpItP+el2PRGYGaXujvEdrg3VJpkILfno5KHDiPE+L Xx0tb7dN2n3loEtnvZLVFGji700NRQgJtBS+OX913s32qqzmLDUxsFvllp/bqaLlCm 9nhTFuloW7qdwroXmJxkPW+2ioIDC/tf+BFZ6PJE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726995AbfLCPm6 (ORCPT ); Tue, 3 Dec 2019 10:42:58 -0500 Received: from mail-qk1-f179.google.com ([209.85.222.179]:43831 "EHLO mail-qk1-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726189AbfLCPm6 (ORCPT ); Tue, 3 Dec 2019 10:42:58 -0500 Received: by mail-qk1-f179.google.com with SMTP id q28so3817652qkn.10 for ; Tue, 03 Dec 2019 07:42:57 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=GZ5+yklq7H8c4cLmSOwBTw3oeLZQUR/opCiWbrMVFHw=; b=LvI71To1VF/q1yq1S8AWadCBry6iIUKT0fW/YgdRM/ooPpIOdYifucaLUxQNDvQG7F 6WzTXRJqm5WyTkJJC880WNiTSi0j3sBIJ+h9j/aQXV1hv3/d3ZIDdIDu3r7taktYQYte TBCa7Ej0WoDB6fdPMoEIuENBrL10zXSDUS/fzwei8eaF+RN3hq+WRJ623KS0Ldb1y6IU polQJbQ/r7z/0SKAkRYhzSf+HrZVGaSLYkLQzynpBo7aBxz+Thn1embz07roqjmHaylY wWLZHC16k5Fer1spanc1u/h+IYQmD+R5CwSKwrRgztKuMOVeRwdRwMU/mRfQrJKcNdNQ M2Wg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :references:mime-version:content-disposition:in-reply-to:user-agent; bh=GZ5+yklq7H8c4cLmSOwBTw3oeLZQUR/opCiWbrMVFHw=; b=C1q5vlcZxs8lNRKh9IwYu7ZvtnA4Vl/ixwCxyKOjmSM6homT7yoRpAr2wKKZwbxJ66 5+SBK7Y+BWdPe5jyzznRFOldigMKW36EY4eckDE8aS3Ljm7ZhfwzSndheD8ZAxNw2ZiT /JpEp+HbcdhcyXNdDOlh+LMr5NkAbHIQ217sV6qgA8vJskP7EopYO3zZbIN3czzfPkd5 ziTe4e9qxy4ly7x2N0BGx0kP/1bZ490l69bpqyyVys/iPjtz0fo8SvRzS9xcsuY0FmWD MxO2B+lKzKvCnQhGu/AyjeFW75TJyqDU8n4lX30vRNJ5U6MXK7pIUsHHY/1u57OyHTr/ L5tw== X-Gm-Message-State: APjAAAXCXs3MvS6G7EpH72tC7NRNJbEN+jKfwyYoxbBr3SfCD0ZajKgb jPpT6vOGrJwjwiPoAC3ZiIg= X-Google-Smtp-Source: APXvYqz7zbichx9Xsf2WHw7Kn9aQgenAuKj3xnpaGD6uXIpcLyjtKIc7+jfvjey9Dv0KreS8xpQVTw== X-Received: by 2002:ae9:de44:: with SMTP id s65mr5769090qkf.203.1575387777043; Tue, 03 Dec 2019 07:42:57 -0800 (PST) Received: from localhost ([2620:10d:c091:500::3:6ede]) by smtp.gmail.com with ESMTPSA id f26sm1956315qtv.77.2019.12.03.07.42.53 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 03 Dec 2019 07:42:54 -0800 (PST) Date: Tue, 3 Dec 2019 07:42:51 -0800 From: Tejun Heo To: Peter Zijlstra Cc: "Paul E. McKenney" , jiangshanlai@gmail.com, linux-kernel@vger.kernel.org, Ingo Molnar , Thomas Gleixner Subject: Re: Workqueues splat due to ending up on wrong CPU Message-ID: <20191203154251.GC2196666@devbig004.ftw2.facebook.com> References: <20191125230312.GP2889@paulmck-ThinkPad-P72> <20191126183334.GE2867037@devbig004.ftw2.facebook.com> <20191126220533.GU2889@paulmck-ThinkPad-P72> <20191127155027.GA15170@paulmck-ThinkPad-P72> <20191128161823.GA24667@paulmck-ThinkPad-P72> <20191129155850.GA17002@paulmck-ThinkPad-P72> <20191202015548.GA13391@paulmck-ThinkPad-P72> <20191202201338.GH16681@devbig004.ftw2.facebook.com> <20191203095521.GH2827@hirez.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20191203095521.GH2827@hirez.programming.kicks-ass.net> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, On Tue, Dec 03, 2019 at 10:55:21AM +0100, Peter Zijlstra wrote: > The below seems to not insta explode... Paul, any chance you can run Peter's patch through your test? Thanks. -- tejun