From: =?UTF-8?B?VG9yYWxmIEbDtnJzdGVy?= Subject: Re: v3.10: unmount won't work Date: Tue, 14 May 2013 22:09:58 +0200 Message-ID: <51929A16.8050306@gmx.de> References: <51928CB5.2050406@gmx.de> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Linux Kernel To: linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org Return-path: Received: from mout.gmx.net ([212.227.17.20]:59513 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755446Ab3ENUKF (ORCPT ); Tue, 14 May 2013 16:10:05 -0400 Received: from mailout-de.gmx.net ([10.1.76.31]) by mrigmx.server.lan (mrigmx002) with ESMTP (Nemesis) id 0LqoQe-1Ty2i82yqQ-00eMce for ; Tue, 14 May 2013 22:10:02 +0200 In-Reply-To: <51928CB5.2050406@gmx.de> Sender: linux-ext4-owner@vger.kernel.org List-ID: On 05/14/2013 09:12 PM, Toralf F=C3=B6rster wrote: > At a stable 32 bit stable Gentoo with kernel v3.10-rc1-113-ga2c7a54 I= cannot umount an (EXT4) fs > which was created in a file located in a tmpfs partition and loop mou= nted : >=20 > That file system was used to hold victims files shared via NFSv4 to a= n user mode linux=20 > on which trinity was used to fuzz testing a patched UML guest kernel. =46WIW the numbers are really wrong for /mnt/trinity # df -m /mnt/trinity/ =46ilesystem 1M-blocks Used Available Use% Mounted on /dev/loop0 183851 31165 143325 18% /mnt/trinity b/c 257 MB were specified for the file in which the EXT4FS was created: # ls -lh /mnt/ramdisk/disk0 -rw-r--r-- 1 tfoerste users 257M May 14 20:56 /mnt/ramdisk/disk0 here is the corresponding code snippet : FS=3D"ext4" dd if=3D/dev/zero of=3D/mnt/ramdisk/disk0 bs=3D1M count=3D257 2= >/dev/null || return 2 yes | /sbin/mkfs.$FS /mnt/ramdisk/disk0 1>/dev/null || return 3 sudo su -c "mount -o loop /mnt/ramdisk/disk0 /mnt/trinity/; chm= od 777 /mnt/trinity" || return 4 --=20 MfG/Sincerely Toralf F=C3=B6rster pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3 -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html