我正在尝试将insmodjprobe 模块连接到有根的 Android 手机:
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/kprobes.h>
 /*
  * Jumper probe for do_fork.
  * Mirror principle enables access to arguments of the probed routine
  * from the probe handler.
  */
 /* Proxy routine having the same arguments as actual do_fork() routine */
 static long jdo_fork(unsigned long clone_flags, unsigned long stack_start,
               struct pt_regs *regs, unsigned long stack_size,
               int __user *parent_tidptr, int __user *child_tidptr)
 {
         printk(KERN_INFO "jprobe: clone_flags = 0x%lx, stack_size = 0x%lx,"
                         " regs = 0x%p\n",
                clone_flags, stack_size, regs);
         /* Always end with a call to jprobe_return(). */
         jprobe_return();
         return 0;
 }
 static struct jprobe my_jprobe = {
         .entry                  = jdo_fork,
         .kp = {
                 .symbol_name    = "do_fork",
         },
 };
 static int __init jprobe_init(void)
 {
         int ret;
         ret = register_jprobe(&my_jprobe);
         if (ret < 0) {
                 printk(KERN_INFO "register_jprobe failed, returned %d\n", ret);
                 return -1;
         }
         printk(KERN_INFO "Planted jprobe at %p, handler addr %p\n",
                my_jprobe.kp.addr, my_jprobe.entry);
         return 0;
 }
 static void __exit jprobe_exit(void)
 {
         unregister_jprobe(&my_jprobe);
         printk(KERN_INFO "jprobe at %p unregistered\n", my_jprobe.kp.addr);
 }
module_init(jprobe_init)
module_exit(jprobe_exit)
MODULE_LICENSE("GPL");
但它失败了:
  root@android:# insmod my_jprobe.ko
  [3223.32]register_jprobe failed, returned -38
我收到-38错误,无法理解它是什么,我看到的唯一失败返回值是-22,是否可以在基于 arm 的芯片上安装 jprobe 模块?
do_fork是在System.map并且是在对象表中。
我需要在配置文件中打开哪些标志来支持jpobes?