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=-0.8 required=3.0 tests=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 B7C3DC43603 for ; Thu, 19 Dec 2019 21:02:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7756324672 for ; Thu, 19 Dec 2019 21:02:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727264AbfLSVCg (ORCPT ); Thu, 19 Dec 2019 16:02:36 -0500 Received: from logand.com ([37.48.87.44]:59300 "EHLO logand.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726959AbfLSVCf (ORCPT ); Thu, 19 Dec 2019 16:02:35 -0500 Received: by logand.com (Postfix, from userid 1001) id 329DF1A8885; Thu, 19 Dec 2019 22:02:34 +0100 (CET) X-Mailer: emacs 26.3 (via feedmail 11-beta-1 I) From: Tomas Hlavaty To: Ryusuke Konishi Cc: linux-nilfs , LKML Subject: Re: BUG: unable to handle kernel NULL pointer dereference at 00000000000000a8 in nilfs_segctor_do_construct In-Reply-To: References: <8736emquds.fsf@logand.com> Date: Thu, 19 Dec 2019 22:02:32 +0100 Message-ID: <87immckp07.fsf@logand.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Ryusuke, thanks for your answer. Ryusuke Konishi writes: > 1) Is the crash reproducible in the environment ? yes > 2) Can you mount the corrupted(?) partition from a recent version of > kernel ? > 3) Does read-only mount option (-r) work to avoid the crash ? I'll have access to the computer sometime next week so I'll try this out and let you know. Thank you, Tomas