nfsd: correctly decrement odstate refcount in error path

alloc_init_deleg() both allocates an nfs4_delegation, and
bumps the refcount on odstate. So after this point, we need to
put_clnt_odstate() and nfs4_put_stid() to not leave the odstate
refcount inappropriately bumped.

Signed-off-by: Andrew Elble <aweits@rit.edu>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 07a57d0..f093fbe 100644 (file)
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -4398,7 +4398,7 @@ nfs4_set_delegation(struct nfs4_client *clp, struct svc_fh *fh,
 
        fl = nfs4_alloc_init_lease(dp, NFS4_OPEN_DELEGATE_READ);
        if (!fl)
-               goto out_stid;
+               goto out_clnt_odstate;
 
        status = vfs_setlease(fp->fi_deleg_file, fl->fl_type, &fl, NULL);
        if (fl)
@@ -4423,7 +4423,6 @@ out_unlock:
        vfs_setlease(fp->fi_deleg_file, F_UNLCK, NULL, (void **)&dp);
 out_clnt_odstate:
        put_clnt_odstate(dp->dl_clnt_odstate);
-out_stid:
        nfs4_put_stid(&dp->dl_stid);
 out_delegees:
        put_deleg_file(fp);