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[PATCH] knfsd: nfsd4: Fix error handling in nfsd's callback client
Coverity noticed that the error handling code in the NFSv4 callback client sets cb->cb_client to NULL, then calls rpc_shutdown_client with the NULL pointer. Coverity: #cid 1397 Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@ -421,7 +421,7 @@ nfsd4_probe_callback(struct nfs4_client *clp)
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/* Create RPC client */
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cb->cb_client = rpc_create(&args);
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if (!cb->cb_client) {
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if (IS_ERR(cb->cb_client)) {
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dprintk("NFSD: couldn't create callback client\n");
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goto out_err;
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}
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@ -448,10 +448,10 @@ nfsd4_probe_callback(struct nfs4_client *clp)
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out_rpciod:
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atomic_dec(&clp->cl_count);
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rpciod_down();
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cb->cb_client = NULL;
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out_clnt:
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rpc_shutdown_client(cb->cb_client);
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out_err:
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cb->cb_client = NULL;
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dprintk("NFSD: warning: no callback path to client %.*s\n",
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(int)clp->cl_name.len, clp->cl_name.data);
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}
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