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=-3.9 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 7BEC0C4727C for ; Fri, 25 Sep 2020 23:14:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 19C9421775 for ; Fri, 25 Sep 2020 23:14:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="O8WigxqA"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="qe4V7bKc" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729337AbgIYXOV (ORCPT ); Fri, 25 Sep 2020 19:14:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50860 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728680AbgIYXOV (ORCPT ); Fri, 25 Sep 2020 19:14:21 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 230BEC0613CE; Fri, 25 Sep 2020 16:14:21 -0700 (PDT) From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1601075659; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=5hfCJknL7vN5FQ7E5rBJUvr3Ui/JGPGdNK+KMG+iROA=; b=O8WigxqARtdurkJ3wZLtFlOVp/IJYLWjDmhmQmul4Jh1+/tu2tcAC1TQqLvZ7X6XtgAJUn eOxJOrPLqDp0AFlhrf9ICCES57zKrQJtWeBw+enhlvFsmhVrk/PIHUraubnLUB8YFVD3EU aO+sAe/6qmqsJ4/w9ay6UGJ7n4LbTG7vauQWZ+EMoZO0h8etOCXCfxiQH5btgeOiQSreV3 mVGp6pGYXUixpnIECzjY39qztquc0ZKZJGi+8R9bz6K81QFII/mn3LRxC2GMX7eONSPEt0 XqZWoOf+IOa80v+JeOxpuuaVtH3FZsqK9XZ5peTSl+Dt7ASOi02SLO6a+QW6sw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1601075659; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=5hfCJknL7vN5FQ7E5rBJUvr3Ui/JGPGdNK+KMG+iROA=; b=qe4V7bKcqNpxkkupSUaXGl+NgWRwWilYYeYK3x3W8R47Rqr4/aCDpm5Xt3BubAKjEHc4Tr Du8N8X29kfg+K2Ag== To: Peter Zijlstra , Qian Cai Cc: LKML , Stephen Rothwell , linux-next@vger.kernel.org, x86@kernel.org, Joerg Roedel , iommu@lists.linux-foundation.org, linux-hyperv@vger.kernel.org, Haiyang Zhang , Jon Derrick , Lu Baolu , Wei Liu , "K. Y. Srinivasan" , Stephen Hemminger , Steve Wahl , Dimitri Sivanich , Russ Anderson , linux-pci@vger.kernel.org, Bjorn Helgaas , Lorenzo Pieralisi , Konrad Rzeszutek Wilk , xen-devel@lists.xenproject.org, Juergen Gross , Boris Ostrovsky , Stefano Stabellini , Marc Zyngier , Greg Kroah-Hartman , "Rafael J. Wysocki" , Megha Dey , Jason Gunthorpe , Dave Jiang , Alex Williamson , Jacob Pan , Baolu Lu , Kevin Tian , Dan Williams Subject: Re: [patch V2 00/46] x86, PCI, XEN, genirq ...: Prepare for device MSI In-Reply-To: <20200925154937.GL29142@worktop.programming.kicks-ass.net> References: <20200826111628.794979401@linutronix.de> <3c12bdec2c4ecdabcccd9ece3d495d792e9fc231.camel@redhat.com> <20200925154937.GL29142@worktop.programming.kicks-ass.net> Date: Sat, 26 Sep 2020 01:14:18 +0200 Message-ID: <87tuvltpo5.fsf@nanos.tec.linutronix.de> MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-hyperv@vger.kernel.org On Fri, Sep 25 2020 at 17:49, Peter Zijlstra wrote: > Here it looks like this: > > [ 1.830276] BUG: kernel NULL pointer dereference, address: 0000000000000000 > [ 1.838043] #PF: supervisor instruction fetch in kernel mode > [ 1.844357] #PF: error_code(0x0010) - not-present page > [ 1.850090] PGD 0 P4D 0 > [ 1.852915] Oops: 0010 [#1] SMP > [ 1.856419] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.9.0-rc6-00700-g0248dedd12d4 #419 > [ 1.865447] Hardware name: Intel Corporation S2600GZ/S2600GZ, BIOS SE5C600.86B.02.02.0002.122320131210 12/23/2013 > [ 1.876902] RIP: 0010:0x0 > [ 1.879824] Code: Bad RIP value. > [ 1.883423] RSP: 0000:ffffffff82803da0 EFLAGS: 00010282 > [ 1.889251] RAX: 0000000000000000 RBX: ffffffff8282b980 RCX: ffffffff82803e40 > [ 1.897241] RDX: 0000000000000001 RSI: ffffffff82803e40 RDI: ffffffff8282b980 > [ 1.905201] RBP: ffff88842f331000 R08: 00000000ffffffff R09: 0000000000000001 > [ 1.913162] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000048 > [ 1.921123] R13: ffffffff82803e40 R14: ffffffff8282b9c0 R15: 0000000000000000 > [ 1.929085] FS: 0000000000000000(0000) GS:ffff88842f400000(0000) knlGS:0000000000000000 > [ 1.938113] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 1.944524] CR2: ffffffffffffffd6 CR3: 0000000002811001 CR4: 00000000000606b0 > [ 1.952484] Call Trace: > [ 1.955214] msi_domain_alloc+0x36/0x130 Hrm. That looks like a not initialized mandatory callback. Confused. Is this on -next and if so, does this happen on tip:x86/irq as well? Can you provide yoru config please? Thanks, tglx