Re: btrfs io errors on 3.4rc1

[Dave Jones <davej@redhat.com>]

On Tue, Apr 03, 2012 at 01:07:50PM -0400, Dave Jones wrote:

 >  > wait, what...
 >  > 
 >  >  535         memset(trans, 0, sizeof(*trans));
 >  >  536         kmem_cache_free(btrfs_trans_handle_cachep, trans);
 >  >  537 
 >  >  538         if (throttle)
 >  >  539                 btrfs_run_delayed_iputs(root);
 >  >  540 
 >  >  541         if (trans->aborted ||
 >  >  542             root->fs_info->fs_state & BTRFS_SUPER_FLAG_ERROR) {
 >  >  543                 return -EIO;
 >  >  544         }
 >  > 
 >  > that looks like a pretty clear use-after-free.
 > 
 > Ok, trying this..

Yep that fixes it.  Chris I'll mail it to you again with a proper sign-off.

thanks for the help chasing this down David.

	Dave