Re: [PATCH] btrfs: Fix extent map leak in find_first_block_group

[Liu Bo <bo.li.liu@oracle.com>]

On Wed, Aug 24, 2016 at 09:54:16AM +0100, Filipe Manana wrote:
> On Wed, Aug 24, 2016 at 5:13 AM, Qu Wenruo <quwenruo@cn.fujitsu.com> wrote:
> > The following commit introduced the extent map leak:
> > commit 6fb37b756acce6d6e045f79c3764206033f617b4
> > Author: Liu Bo <bo.li.liu@oracle.com>
> > Date:   Wed Jun 22 18:31:27 2016 -0700
> >
> >     Btrfs: check inconsistence between chunk and block group
> >
> > This leads to slab warning at rmmod time.
> >
> > Cc: Liu Bo <bo.li.liu@oracle.com>
> > Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
> 
> https://patchwork.kernel.org/patch/9288751/

Thanks to all for fixing this.

Thanks,

-liubo

> 
> > ---
> >  fs/btrfs/extent-tree.c | 1 +
> >  1 file changed, 1 insertion(+)
> >
> > diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
> > index c2b81b0..e621823 100644
> > --- a/fs/btrfs/extent-tree.c
> > +++ b/fs/btrfs/extent-tree.c
> > @@ -9905,6 +9905,7 @@ static int find_first_block_group(struct btrfs_root *root,
> >                                 ret = -ENOENT;
> >                         } else {
> >                                 ret = 0;
> > +                               free_extent_map(em);
> >                         }
> >                         goto out;
> >                 }
> > --
> > 2.7.4
> >
> >
> >
> > --
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> 
> 
> 
> -- 
> Filipe David Manana,
> 
> "People will forget what you said,
>  people will forget what you did,
>  but people will never forget how you made them feel."