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

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On 11/01/2023 20:22, Ilya Dryomov wrote:
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.

Yeah, sure will do.

Thanks

- Xiubo


Thanks,

                 Ilya

--
Best Regards,

Xiubo Li (李秀波)

Email: xiubli@xxxxxxxxxx/xiubli@xxxxxxx
Slack: @Xiubo Li




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