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=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 7E9AAC43612 for ; Tue, 8 Jan 2019 13:49:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 497B4206BB for ; Tue, 8 Jan 2019 13:49:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728318AbfAHNtL (ORCPT ); Tue, 8 Jan 2019 08:49:11 -0500 Received: from mx1.redhat.com ([209.132.183.28]:57394 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727236AbfAHNtL (ORCPT ); Tue, 8 Jan 2019 08:49:11 -0500 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 03D9341A59; Tue, 8 Jan 2019 13:49:11 +0000 (UTC) Received: from segfault.boston.devel.redhat.com (segfault.boston.devel.redhat.com [10.19.60.26]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 51BB45ED53; Tue, 8 Jan 2019 13:49:10 +0000 (UTC) From: Jeff Moyer To: Logan Gunthorpe Cc: Christoph Hellwig , Jens Axboe , "linux-block\@vger.kernel.org" , "linux-kernel\@vger.kernel.org" Subject: Re: Regression in v5.0-rc1: Panic at boot References: X-PGP-KeyID: 1F78E1B4 X-PGP-CertKey: F6FE 280D 8293 F72C 65FD 5A58 1FF8 A7CA 1F78 E1B4 Date: Tue, 08 Jan 2019 08:49:07 -0500 In-Reply-To: (Logan Gunthorpe's message of "Mon, 7 Jan 2019 12:41:06 -0700") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Tue, 08 Jan 2019 13:49:11 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, Logan, Logan Gunthorpe writes: > Hey, > > I found a regression in v5.0-rc1 this morning. My system panics on boot. > I've attached a log of the panic. > > I bisected to find the problematic commit is: > > Fixes: 9d037ad707ed ("block: remove req->timeout_list") > > But it makes no sense to me why this commit would cause a problem like > this. I've attached a bisect log. I've also tested v5.0-rc1 with this > commit reverted and that boots fine. > > The traceback seems to indicate the problem is on the bip_get_seed() > line in t10_pi_complete(). Which suggests that bio_integrity() is > returning NULL. Does your hardware actually support protection information? -Jeff