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=-2.1 required=3.0 tests=DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,T_DKIM_INVALID, URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham 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 20B9AC04ABB for ; Tue, 11 Sep 2018 22:07:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AE74C20866 for ; Tue, 11 Sep 2018 22:07:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="gq/QPDls" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AE74C20866 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=roeck-us.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728253AbeILDJH (ORCPT ); Tue, 11 Sep 2018 23:09:07 -0400 Received: from mail-pg1-f193.google.com ([209.85.215.193]:42350 "EHLO mail-pg1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728014AbeILDJH (ORCPT ); Tue, 11 Sep 2018 23:09:07 -0400 Received: by mail-pg1-f193.google.com with SMTP id y4-v6so12924729pgp.9; Tue, 11 Sep 2018 15:07:45 -0700 (PDT) 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=fQfFZXcdvKiffdEGXqzDCbwPNc5uZbtBrs+8fK4f5Xk=; b=gq/QPDlsVlHEm4QpIjwZ8H8hHpt3POZfn1KxLa+wMq7SE+NYQeTwshg1XjQJvSCl4I 3b0lgTZxH+amccVjfbhKhCl7IqJqccl/uTvm+0X272iddeFS7AM/YcGd4BK9P8AhLDed +T4DJxoMWqsMceWXfM55pL14ls3Na48GRMzrSwbDmfF8l574wFMH4xBqVeH6GblrHFoQ RUowHXj1TWBO6O/UJP73Qm3lY2Uib2BFUTM6csleB/dqpRLK2J2CMUTBdhEtl3R6LOdm bFtQdiXe2auzpuGqIZkBN3YT8CDb+bXowStkRTnGPCGPNuek89XW/TFr4CEJwymcRVod Qksg== 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=fQfFZXcdvKiffdEGXqzDCbwPNc5uZbtBrs+8fK4f5Xk=; b=O17lpre3lBId99ncTL91egYKlAk1KlibV/epdPQHB2tYf8zXULxUsGRFiah4iq/g88 he53N9Pec4HUk+mFsuuUIf9MYYmILozPSlEXjPBsEC1ut7si33eIDDNI5sbxRdVgJ5cC 6ZXz1CaxbjoWJ9mBQKCJbyZjMBtaDYTnot2kPTIjg0o0aRTzmFiIcPWfG3OxOZxH96oc 2G370gCy8Pio3ZintAr3KcAxlMSEOAVUUlsMAlVq/hQOtLiHBYUNYCo6r6Uj4jIw0uLs YJvGdAGxPMySE3K+qV7tN6JkZSaKqYUGA91/nGlbOMzV8rSZabFpmFirNfl5/bhVVgKk rBpg== X-Gm-Message-State: APzg51DlG8QqkFU+XffkXKRzm2XUwEPZ5NE5EBCpKTygTDZFdiA+Kj1M cX+Dj39RHSUiMcXhNj5TkGc= X-Google-Smtp-Source: ANB0VdY8suFod8ZijQ7+YiaOpuBvE6OvJS5rL6ungEpoXe3D0fQbhZ4HfODWPPvWj4h/auknzrQiTA== X-Received: by 2002:a63:d90b:: with SMTP id r11-v6mr30716705pgg.315.1536703665476; Tue, 11 Sep 2018 15:07:45 -0700 (PDT) Received: from localhost (108-223-40-66.lightspeed.sntcca.sbcglobal.net. [108.223.40.66]) by smtp.gmail.com with ESMTPSA id 6-v6sm35227473pfs.58.2018.09.11.15.07.44 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 11 Sep 2018 15:07:44 -0700 (PDT) Date: Tue, 11 Sep 2018 15:07:43 -0700 From: Guenter Roeck To: David Howells Cc: viro@zeniv.linux.org.uk, torvalds@linux-foundation.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Steven Rostedt Subject: Re: [PATCH 14/33] vfs: Implement a filesystem superblock creation/configuration context [ver #11] Message-ID: <20180911220743.GA13208@roeck-us.net> References: <20180911174641.GA15149@roeck-us.net> <153313703562.13253.5766498657900728120.stgit@warthog.procyon.org.uk> <153313714181.13253.304098108512966976.stgit@warthog.procyon.org.uk> <27113.1536702746@warthog.procyon.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <27113.1536702746@warthog.procyon.org.uk> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Sep 11, 2018 at 10:52:26PM +0100, David Howells wrote: > > [ 5.057003] RIP: 0010:reconfigure_super+0x47/0x210 > > Can you tell me what file and line this is? > > Also, do you know which filesystem was involved? > > > I don't find a more recent version of this patch in patchwork on kernel.org, > > so I am replying to this one. My apologies if there are more recent versions. > > I've just updated my tree with some fixes. Can you try: > > https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/log/ > > branch "fsinfo"? > Unfortunately, that does not work either. With v4.19-rc3-40-g09f0a401de37: [ 8.505130] BUG: unable to handle kernel NULL pointer dereference at 0000000000000030 [ 8.506237] PGD 800000001d81e067 P4D 800000001d81e067 PUD 1dfb1067 PMD 0 [ 8.506669] Oops: 0000 [#1] SMP PTI [ 8.506915] CPU: 0 PID: 1180 Comm: umount Not tainted 4.19.0-rc3+ #1 [ 8.507052] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.11.2-0-gf9626ccb91-prebuilt.qemu-project.org 04/01/2014 [ 8.507672] RIP: 0010:reconfigure_super+0x47/0x210 [ 8.507877] Code: d4 01 00 00 44 8b a3 30 02 00 00 45 85 e4 0f 85 9d 01 00 00 a8 01 48 89 fd 75 4f 48 89 df 45 31 ed e8 ad 4f 01 00 48 8b 45 00 <48> 4 [ 8.508222] RSP: 0018:ffffb3794015bdd0 EFLAGS: 00000246 [ 8.508345] RAX: 0000000000000000 RBX: ffff9d855df27800 RCX: ffff9d855df278b8 [ 8.508479] RDX: ffff9d855df27848 RSI: 0000000000000000 RDI: ffffffff8d54a9a8 [ 8.508617] RBP: ffffb3794015be00 R08: 00000000000000d8 R09: 0000000000000000 [ 8.508752] R10: ffffb3794011fce8 R11: 0000000000000001 R12: 0000000000000000 [ 8.508885] R13: 0000000000000001 R14: ffff9d855effc920 R15: 0000000000000000 [ 8.509056] FS: 00007f6712967500(0000) GS:ffff9d855f200000(0000) knlGS:0000000000000000 [ 8.509217] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 8.509332] CR2: 0000000000000030 CR3: 000000001dfe0000 CR4: 00000000000006f0 [ 8.509516] Call Trace: [ 8.510121] do_umount_root+0x7b/0xb0 [ 8.510244] ksys_umount+0x250/0x3e0 [ 8.510535] ? vfs_write+0x13f/0x190 [ 8.510629] __x64_sys_umount+0xd/0x10 [ 8.510722] do_syscall_64+0x39/0xe0 [ 8.510810] entry_SYSCALL_64_after_hwframe+0x44/0xa9 Guenter