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nfs: check hostname in nfs_get_client
We reference cl_hostname in many places. Add a check to make sure it exists. Signed-off-by: Peng Tao <tao.peng@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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parent
a363e32e94
commit
31434f496a
1 changed files with 7 additions and 2 deletions
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@ -482,8 +482,13 @@ nfs_get_client(const struct nfs_client_initdata *cl_init,
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struct nfs_net *nn = net_generic(cl_init->net, nfs_net_id);
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struct nfs_net *nn = net_generic(cl_init->net, nfs_net_id);
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const struct nfs_rpc_ops *rpc_ops = cl_init->nfs_mod->rpc_ops;
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const struct nfs_rpc_ops *rpc_ops = cl_init->nfs_mod->rpc_ops;
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if (cl_init->hostname == NULL) {
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WARN_ON(1);
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return NULL;
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}
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dprintk("--> nfs_get_client(%s,v%u)\n",
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dprintk("--> nfs_get_client(%s,v%u)\n",
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cl_init->hostname ?: "", rpc_ops->version);
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cl_init->hostname, rpc_ops->version);
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/* see if the client already exists */
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/* see if the client already exists */
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do {
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do {
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@ -510,7 +515,7 @@ nfs_get_client(const struct nfs_client_initdata *cl_init,
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} while (!IS_ERR(new));
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} while (!IS_ERR(new));
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dprintk("<-- nfs_get_client() Failed to find %s (%ld)\n",
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dprintk("<-- nfs_get_client() Failed to find %s (%ld)\n",
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cl_init->hostname ?: "", PTR_ERR(new));
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cl_init->hostname, PTR_ERR(new));
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return new;
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return new;
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}
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}
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EXPORT_SYMBOL_GPL(nfs_get_client);
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EXPORT_SYMBOL_GPL(nfs_get_client);
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