Ubuntu
linux package

  1. Bug #330824
  2. Comment #195

Comment 195 for bug 330824

Revision history for this message
Theodore Ts'o (tytso) wrote : Re: [Bug 330824] Re: Soft lockups (freezes) when deleting files from ext4 partitions on 2.6.28

On Fri, Jun 19, 2009 at 04:49:19PM -0000, Derek wrote:
> > git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git for-stable-2.6.28
> > http://git.kernel.org/?p=linux/kernel/git/tytso/ext4.git;a=shortlog;h=for-stable-2.6.28
> >
> > (This is where it's handy to have a file system specialist working at
> > the distribution; when I found the problem, I was able to contact Eric
> > and he made sure the patch was quickly dropped into the F11 kernel.)
>
> Is this:
> http://git.kernel.org/?p=linux/kernel/git/tytso/ext4.git;a=commitdiff;h=16cb5dd9f53e569130584696909d423b6fe38c1e
>
> 'cause the machines I was getting lockups on were single core.

That's the one; this bug could potentially cause inode table or
corruption of block groups, causing data loss. It could *potentially*
show up on single processor systems, if CONFIG_PREMPT is defined, but
in practice it's unlikely for UP systems to hit the race.

                        - Ted