Received: by 2002:a25:c593:0:0:0:0:0 with SMTP id v141csp5432244ybe; Tue, 10 Sep 2019 03:41:12 -0700 (PDT) X-Google-Smtp-Source: APXvYqzdx2XLggbPqCK6qUIT6KrwDsWttah+nG8XlNTssDFFiF4tKNLIC6qekwq/lTyf9sftvu2T X-Received: by 2002:a17:906:9713:: with SMTP id k19mr23553856ejx.303.1568112072741; Tue, 10 Sep 2019 03:41:12 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1568112072; cv=none; d=google.com; s=arc-20160816; b=bNbJ6Jb/jUGIq3tG5N9L0/50T6lHsL1sNR2lnt6hqHA5WtAZPG1G9+FIPBPBqP87w+ g/e/Fm37y2ib0JItiIqzKKp+gBSwgVk4xwWBqGRSWt+a9Au2WOi9isvma5AIrBuzDAeL o8LvwKUVohpMmdFE0ei1m8Q4S9Lq100cYjPojm1OSOZXsgqAwyDolapIN7vwTYxnEM1f DHm3k/r6z3cvEcLeWn9cANdi4Q6j+SEmXRD9f311KGntUEMWzh6iFDa0R0UQs0P/Y0/k k38Z75qWbeTFz0gJt7JHkszleo0TxmvNr/6i1aBFxGZ5bf05aPXPnCUYwmgY0jiyhVTG TqPQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date:dkim-signature; bh=JwYl5b1PFnWQJ5Rk6doRyu3zqe4CdVYg/isoUZ798Ig=; b=pUJlxs3FXYlb3xBgFVCCF1MT+kVNx52a/8AkbV4y+IdHCuan6b6+MVuRLxUnON3+mw XFCYLFyyGRVJJPbMSE3M1r0RXk+u4ZdrKr4Yjtldm1puz5485YoLP7zLDXunyuSMxkCa gAtZb4fucktaBAZmT9dY+zVnX5NWYcdyyBu9/Nu9nKi+iUjAgO8SjaH/flFkobHuqSRx QeX/bPwW9tzPED+B3qr5UCy88pbhrRALj0iJDdYcgvzt7sF/Xm3Bj0MgwZgFPtTOupiw hlcCgzOF3dKdmk/OwUOTgRwDmRDd/yocW5nXYO52BQdGlm0Dxag7bVzjvaaB82Oiihpa T86Q== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=G0jTNUyB; 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; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id i2si8538235edr.183.2019.09.10.03.40.48; Tue, 10 Sep 2019 03:41:12 -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; dkim=pass header.i=@gmail.com header.s=20161025 header.b=G0jTNUyB; 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; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392792AbfIJDWv (ORCPT + 99 others); Mon, 9 Sep 2019 23:22:51 -0400 Received: from mail-pf1-f193.google.com ([209.85.210.193]:41719 "EHLO mail-pf1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726892AbfIJDWv (ORCPT ); Mon, 9 Sep 2019 23:22:51 -0400 Received: by mail-pf1-f193.google.com with SMTP id b13so10636886pfo.8 for ; Mon, 09 Sep 2019 20:22:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=JwYl5b1PFnWQJ5Rk6doRyu3zqe4CdVYg/isoUZ798Ig=; b=G0jTNUyBUiEx0wDG+jJuHRfrOw9c2svHPf5dnKQ4hcIl++XTmFjIpjov64gPvZrMN2 5p3hv0RyM5+YJfgPix0BsYiQAaOmhEZRWjGP5fwnUE/lAVMSDbTfL2zjq/Lh9QOMnCUy Cj1DtfyWVo4bMoqZsJredt0rZCu8xutPnY46D1VNr/4aRRfwh6qGjrWzrhZdMuP8VVEX dxj3sd5B0U5tyniScx4hCZJ786/ba/qKOpJpyobykBKMJcU+hzDGwArmcESYXDz67Ikq s7FwK7II62DMEvmgyICLXniG1DKD2dFAFKgdx6rgx1ZJihusUWA6UgRonFD9DNus8KAw GZ9w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=JwYl5b1PFnWQJ5Rk6doRyu3zqe4CdVYg/isoUZ798Ig=; b=HZPOs/H60A0dvvNWewm5ODJNLZB6wmheqSHVf2fTfYNUBmEAP2hoYXii1x4MUMvrFB SzpqOyz/PSNvctciGPOwa21x0rERqV+IwsZIaPRoOckQZ2i+YXP2S9ekU520IFH/0gW7 Z2Wu9LJN8XOQ2MmSToBIKlTWl/9XhrQ6oyBUXX/xMw8V7NVn2owTLXcVVhECl7UDGS2F S9yScAnx1ldv/8LsB7vByCf4mH2YeWyLW4lihs9Vic5BOVVvsquQG+eZfhbZSrYRJv/Y 4CCjHIwaTNCS+2mViJ/Lxuj3RfItS6s8NY2yXBYXjypJrMqg3PDbrySePflwHE/V+ZD2 Q/+w== X-Gm-Message-State: APjAAAXCMcJTJIkGxAJ216JJGVcU7pHEzfljhaGp/ciStP1ulo4f8RVc LlUgTcHyWr1P9LqE/NoGJl8= X-Received: by 2002:aa7:8d4b:: with SMTP id s11mr5417393pfe.132.1568085769167; Mon, 09 Sep 2019 20:22:49 -0700 (PDT) Received: from localhost ([39.7.19.227]) by smtp.gmail.com with ESMTPSA id f188sm19871488pfa.170.2019.09.09.20.22.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Sep 2019 20:22:48 -0700 (PDT) Date: Tue, 10 Sep 2019 12:22:44 +0900 From: Sergey Senozhatsky To: Peter Zijlstra Cc: Petr Mladek , Andrea Parri , Sergey Senozhatsky , Sergey Senozhatsky , Steven Rostedt , Brendan Higgins , John Ogness , Thomas Gleixner , Linus Torvalds , Greg Kroah-Hartman , linux-kernel@vger.kernel.org Subject: Re: [RFC PATCH v4 0/9] printk: new ringbuffer implementation Message-ID: <20190910032244.GB103966@jagdpanzerIV> References: <20190807222634.1723-1-john.ogness@linutronix.de> <20190904123531.GA2369@hirez.programming.kicks-ass.net> <20190905130513.4fru6yvjx73pjx7p@pathway.suse.cz> <20190905143118.GP2349@hirez.programming.kicks-ass.net> <20190906090627.GX2386@hirez.programming.kicks-ass.net> <20190906124211.2dionk2kzcslaotz@pathway.suse.cz> <20190906140126.GY2349@hirez.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190906140126.GY2349@hirez.programming.kicks-ass.net> User-Agent: Mutt/1.12.1 (2019-06-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On (09/06/19 16:01), Peter Zijlstra wrote: > In fact, i've gotten output that is plain impossible with > the current junk. Peter, can you post any of those backtraces? Very curious. -ss