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dccp: catch failed request_module call in dccp_probe init
Check the return value of request_module during dccp_probe initialisation, bail out if that call fails. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: Wang Weidong <wangweidong1@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -152,17 +152,6 @@ static const struct file_operations dccpprobe_fops = {
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.llseek = noop_llseek,
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};
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static __init int setup_jprobe(void)
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{
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int ret = register_jprobe(&dccp_send_probe);
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if (ret) {
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request_module("dccp");
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ret = register_jprobe(&dccp_send_probe);
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}
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return ret;
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}
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static __init int dccpprobe_init(void)
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{
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int ret = -ENOMEM;
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@ -174,7 +163,13 @@ static __init int dccpprobe_init(void)
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if (!proc_create(procname, S_IRUSR, init_net.proc_net, &dccpprobe_fops))
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goto err0;
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ret = setup_jprobe();
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ret = register_jprobe(&dccp_send_probe);
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if (ret) {
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ret = request_module("dccp");
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if (!ret)
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ret = register_jprobe(&dccp_send_probe);
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}
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if (ret)
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goto err1;
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