Unverified Commit 0d171de1 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!12317 nfsd: call cache_put if xdr_reserve_space returns NULL 

Merge Pull Request from: @ci-robot 
 
PR sync from: Li Lingfeng <lilingfeng3@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/HACPIMHN6B4OZI64B5UVG6XITXUXX6QL/ 
 
https://gitee.com/src-openeuler/kernel/issues/IAYQRM 
 
Link:https://gitee.com/openeuler/kernel/pulls/12317

 

Reviewed-by: default avatarZhang Peng <zhangpeng362@huawei.com>
Signed-off-by: default avatarZhang Peng <zhangpeng362@huawei.com>
parents e7bc7968 66b3f1fd

fs/nfsd/nfs4idmap.c

+9 −4
Original line number Diff line number Diff line
@@ -581,6 +581,7 @@ static __be32 idmap_id_to_name(struct xdr_stream *xdr, 
		.id = id,

		.type = type,

	};

	__be32 status = nfs_ok;

	__be32 *p;

	int ret;

	struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id);
@@ -593,12 +594,16 @@ static __be32 idmap_id_to_name(struct xdr_stream *xdr, 
		return nfserrno(ret);

	ret = strlen(item->name);

	WARN_ON_ONCE(ret > IDMAP_NAMESZ);



	p = xdr_reserve_space(xdr, ret + 4);

	if (!p)

		return nfserr_resource;

	p = xdr_encode_opaque(p, item->name, ret);

	if (unlikely(!p)) {

		status = nfserr_resource;

		goto out_put;

	}

	xdr_encode_opaque(p, item->name, ret);

out_put:

	cache_put(&item->h, nn->idtoname_cache);

	return 0;

	return status;

}



static bool