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

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On Wed, Aug 24, 2016 at 5:13 AM, Qu Wenruo <quwenruo@xxxxxxxxxxxxxx> wrote:
> The following commit introduced the extent map leak:
> commit 6fb37b756acce6d6e045f79c3764206033f617b4
> Author: Liu Bo <bo.li.liu@xxxxxxxxxx>
> 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@xxxxxxxxxx>
> Signed-off-by: Qu Wenruo <quwenruo@xxxxxxxxxxxxxx>

https://patchwork.kernel.org/patch/9288751/

> ---
>  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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