Re: [PATCH] ceph: fix double free for req when failing to allocate sparse ext map

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On Wed, Jan 11, 2023 at 2:14 AM <xiubli@xxxxxxxxxx> wrote:
>
> From: Xiubo Li <xiubli@xxxxxxxxxx>
>
> Introduced by commit d1f436736924 ("ceph: add new mount option to enable
> sparse reads") and will fold this into the above commit since it's
> still in the testing branch.
>
> Reported-by: Ilya Dryomov <idryomov@xxxxxxxxx>
> Signed-off-by: Xiubo Li <xiubli@xxxxxxxxxx>
> ---
>  fs/ceph/addr.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
> index 17758cb607ec..3561c95d7e23 100644
> --- a/fs/ceph/addr.c
> +++ b/fs/ceph/addr.c
> @@ -351,10 +351,8 @@ static void ceph_netfs_issue_read(struct netfs_io_subrequest *subreq)
>
>         if (sparse) {
>                 err = ceph_alloc_sparse_ext_map(&req->r_ops[0]);
> -               if (err) {
> -                       ceph_osdc_put_request(req);
> +               if (err)
>                         goto out;
> -               }
>         }
>
>         dout("%s: pos=%llu orig_len=%zu len=%llu\n", __func__, subreq->start, subreq->len, len);
> --
> 2.39.0
>

Hi Xiubo,

Looks good, let's fold this into that commit since it's still testing
branch material.

Thanks,

                Ilya



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