From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wolfgang Denk Subject: Re: logfs segfaults at umount time Date: Sun, 10 Oct 2010 19:16:33 +0200 Message-ID: <20101010171633.5E90C14F310@gemini.denx.de> References: <4CB1E5B3.1090300@free-electrons.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7BIT Return-path: In-reply-to: <4CB1E5B3.1090300@free-electrons.com> Sender: linux-embedded-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii" To: Michael Opdenacker Cc: joern@logfs.org, logfs@logfs.org, linux-embedded mailing list , Tim Bird Dear Michael, In message <4CB1E5B3.1090300@free-electrons.com> you wrote: > > I'm running some flash filesystem benchmarks for CELF, and I'm facing > kernel segfaults when I try to umount my logfs filesystem. ... > root@calao:~# mount -t logfs /dev/mtdblock0 /mnt/flash/ > root@calao:~# cp -rf /fs/8m/* /mnt/flash/ > eth0: TX underrun, resetting buffers > eth0: TX underrun, resetting buffers Seems you have some problems here already? > root@calao:~# umount /mnt/flash/ > kernel BUG at fs/logfs/segment.c:858! > Unable to handle kernel NULL pointer dereference at virtual address 00000000 > pgd = c14a4000 > [00000000] *pgd=23a3c031, *pte=00000000, *ppte=00000000 > Internal error: Oops: 817 [#1] ... Best regards, Wolfgang Denk -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de We have phasers, I vote we blast 'em! -- Bailey, "The Corbomite Maneuver", stardate 1514.2