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dccp: catch failed request_module call in dccp_probe init

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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>
This commit is contained in:
Wang Weidong 2013-12-17 19:24:33 -07:00 committed by David S. Miller
parent b1aca94efa
commit 965cdea825
1 changed files with 7 additions and 12 deletions
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19
net/dccp/probe.c
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@ -152,17 +152,6 @@ static const struct file_operations dccpprobe_fops = {
.llseek = noop_llseek,
};
static __init int setup_jprobe(void)
{
int ret = register_jprobe(&dccp_send_probe);
if (ret) {
request_module("dccp");
ret = register_jprobe(&dccp_send_probe);
}
return ret;
}
static __init int dccpprobe_init(void)
{
int ret = -ENOMEM;
@ -174,7 +163,13 @@ static __init int dccpprobe_init(void)
if (!proc_create(procname, S_IRUSR, init_net.proc_net, &dccpprobe_fops))
goto err0;
ret = setup_jprobe();
ret = register_jprobe(&dccp_send_probe);
if (ret) {
ret = request_module("dccp");
if (!ret)
ret = register_jprobe(&dccp_send_probe);
}
if (ret)
goto err1;