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Message-Id: <1236914533.731.15.camel@bobble.smo.corp.google.com> Date: Thu, 12 Mar 2009 20:22:13 -0700 From: Frank Mayhar <fmayhar@...gle.com> To: Eric Sandeen <sandeen@...hat.com> Cc: ext4 development <linux-ext4@...r.kernel.org>, Curt Wohlgemuth <curtw@...gle.com>, mrubin <mrubin@...gle.com> Subject: Re: ext4_mb_generate_buddy and double-free errors On Thu, 2009-03-12 at 21:03 -0500, Eric Sandeen wrote: > Frank Mayhar wrote: > > We're seeing errors like: > > EXT4-fs error (device sda3): ext4_mb_generate_buddy: EXT4-fs: group 3049: 21020 blocks in bitmap, 21529 in gd > > > > Usually after this the system is cleaned and in the process we see many > > "mb_free_blocks: double-free of inode x's block y(bit z in group d)". > > (In fact, we see exactly as many of these as the difference between the > > group and computed count of free blocks.) > > > > It looks like the bitmap itself is getting messed up somehow, at least > > enough to make the free count disagree with the map itself. Has anyone > > else seen something like this? Any pointers as to where to look for > > potential culprits? > > Which kernel, for starters? It's our development kernel, 2.6.26 plus as many of the ext4/jbd2 patches as we can comfortably pull in. -- Frank Mayhar <fmayhar@...gle.com> Google, Inc. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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