From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail04-md.ns.itscom.net ([175.177.155.114]:56292 "EHLO mail04-md.ns.itscom.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729389AbeGQPCG (ORCPT ); Tue, 17 Jul 2018 11:02:06 -0400 From: "J. R. Okajima" Subject: Re: aufs crash at au_set_fbstart in aufs3 (3.4 kernel). To: Prasad Koya Cc: linux-fsdevel@vger.kernel.org, aufs-users@lists.sourceforge.net In-Reply-To: References: Date: Tue, 17 Jul 2018 23:29:08 +0900 Message-ID: <6716.1531837748@jrobl> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: Prasad Koya: > > Has anyone run into this crash with aufs 3? We hit this in production. ::: > > <1>[45257161.254682] BUG: unable to handle kernel NULL pointer > > dereference at 0000000000000038 > > <1>[45257161.351193] IP: [] au_do_open_nondir+0x3b/0xaf I don't think it a good idea to post vger.kernel.org ML since aufs is not mainlined. It is recommended to post aufs-users ML only, with these info. (from aufs README file) ---------------------------------------------------------------------- When you have any problems or strange behaviour in aufs, please let me know with: - /proc/mounts (instead of the output of mount(8)) - /sys/module/aufs/* - /sys/fs/aufs/* (if you have them) - /debug/aufs/* (if you have them) - linux kernel version if your kernel is not plain, for example modified by distributor, the url where i can download its source is necessary too. - aufs version which was printed at loading the module or booting the system, instead of the date you downloaded. - configuration (define/undefine CONFIG_AUFS_xxx) - kernel configuration or /proc/config.gz (if you have it) - behaviour which you think to be incorrect - actual operation, reproducible one is better - mailto: aufs-users at lists.sourceforge.net ---------------------------------------------------------------------- Last but not lease, as you surely know, aufs3.4 has been unsupported since Nov 2013. J. R. Okajima