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BugFix : insert, remove, insert module again will cause crash

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This commit is contained in:
zeroway
2018-05-31 17:13:26 +08:00
parent 52d1d77f26
commit 855c4f6d42
1 changed files with 6 additions and 1 deletions
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7
debug/netlink/demo3_kernel.c
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@ -63,6 +63,8 @@ static struct genl_multicast_group doc_exmpl_genl_mcgrp = {
.name = "DOC_EXMPL_GRP",
};
static struct kobject *genl_kobj = NULL;
/* 需要在其他地方主动调用这个函数发送广播 */
static int test_netlink_send(void)
{
@ -247,7 +249,6 @@ static int doc_exmpl_echo(struct sk_buff *skb, struct genl_info *info)
static int genetlink_init(void)
{
int rc;
struct kobject *genl_kobj;
/**
* 1. Registering A Family
@ -294,6 +295,10 @@ static void genetlink_exit(void)
{
printk("Generic Netlink Example Module unloaded.\n");
sysfs_remove_group(genl_kobj, &genl_group);
sysfs_remove_file(genl_kobj, &genl_attrs);
kobject_put(genl_kobj);
genl_unregister_mc_group(&doc_exmpl_genl_family, &doc_exmpl_genl_mcgrp);
genl_unregister_ops(&doc_exmpl_genl_family, &doc_exmpl_genl_ops_echo);
genl_unregister_family(&doc_exmpl_genl_family);