printk("[KERN] %s %d\n", __func__, __LINE__); return 0; } static ssize_t myread(struct file *filp, char * __user buf, size_t len, loff_t *off) { printk("[KERN] %s %d\n", __func__, __LINE__); return 0; } static ssize_t mywrite(struct file *filp, const char ...
{ printk("cdev add failed, retval:%d\r\n", retVal); } else { printk("cdev add success\r\n"); } return 0; } static void __exit chrdevTest_exit(void) { cdev_del(&g_Cdev); unregister_chrdev_region(g_DeviceID, 1); printk("unregister\r\n"); } module_init(chrdevTest_init); ...
Ping 是一种常用的网络诊断工具，用于测试与目标服务器之间的连接质量和延迟。通过发送 ICMP（Internet ...
6 printk(KERN_INFO "user_buf: %p, count: %d, ppos: %lld\n", 7 user_buf, count, *ppos); 8 9 wrinten = snprintf(kbuf, 10, "%s", "Hello"); 10 11 if (clear_user(user_buf, count)) { 12 printk(KERN_ERR "clear error\n"); 13 return -EIO; 14 } 15 16 ret = copy_to_...
{ printk(KERN_INFO "Hello, kernel\n"); return 0; } static void __exit hello_exit(void) { printk(KERN_INFO "Goodbye, kernel\n"); } module_init(hello_init); module_exit(hello_exit); EOF echo 'obj-m := hello.o' > Makefile make -C ~/WSL2-Linux-Kernel M=`pwd` modules sudo...
1staticssize_t demo_write (structfile *fp,constchar__user *user_buf, size_t count, loff_t *ppos)2{3charkbuf[10] = {0};4intret;56printk(KERN_INFO"user_buf: %p, count: %d, ppos: %lld\n",7user_buf, count, *ppos);89ret =copy_from_user(kbuf, user_buf, count);10if(ret)...
1staticssize_t demo_write (structfile *fp,constchar__user *user_buf, size_t count, loff_t *ppos)2{3charkbuf[10] = {0};4intret;56printk(KERN_INFO"user_buf: %p, count: %d, ppos: %lld\n",7user_buf, count, *ppos);89ret =copy_from_user(kbuf, user_buf, count);10if(ret)...
echo:显示一段文字 比如: echo hello,串口上就显示hello echo hello > /dev/tty1, LCD上便显示hello字段 cat:查看一个文件的内容 比如: cat Makeflie,串口上就显示Makeflie文件的内容 cat Makeflie > /dev/tty1, LCD上便显示Makeflie文件的内容
+ printk("put_net: %px count: %d PID: %i(%s) ", net, net->count, current->pid, current->comm);+ dump_stack(); 捕捉到可疑的调用栈如下,auth_rpcgss内核模块中,write_gssp()产生了两次get_net引用,但是容器终止的过程中没有相应的put_net: ...
@@ -606,7 +606,7 @@ static void icmpv6_echo_reply_vanet(struct sk_buff *skb) MSG_DONTWAIT); if (err) { struct sk_buff *skb; printk("VANET-debug: %s flush pending frames\n", __func__); // printk("VANET-debug: %s flush pending frames\n", __func__); while ((skb = __...