2012/10/19 Fan Yang <[email protected]> > > > 2012/10/19 Arun KS <[email protected]> > > > > Hi Fan, > > > > On Fri, Oct 19, 2012 at 6:50 PM, Fan Yang <[email protected]> wrote: > >> > >> HI ALL: > >> I just run a module on my machine, but it can't work. When the > module run the kernel will painc. I don't know where is wrong. This is my > code: > >> > >> 1 #include<linux/module.h> > >> 2 #include<linux/kernel.h> > >> 3 #include<linux/init.h> > >> 4 #include<linux/sched.h> > >> 5 > >> 6 int input = 1; > >> 7 module_param (input, int, S_IRUGO); > >> 8 > >> 9 static int __init printvma_init (void) > >> 10 { > >> 11 struct vm_area_struct *p, *start; > >> 12 int i; > >> 13 struct task_struct *thread; > > >> 14 > >> 15 thread = current; > >> 16 > >> 17 while (1) > >> 18 { > >> 19 if (thread->pid == input) > >> 20 break; > >> 21 thread = list_entry (thread->tasks.next, struct > task_struct, tasks); > >> 22 } > >> 23 p = thread->mm->mmap; > >> 24 > >> 25 do{ > >> 26 printk ("%lx\t%lx\t%s\n", p->vm_start,\ > >> 27 p->vm_end, p->vm_file->f_path.dentry->d_iname); > >> 28 p = p->vm_next; > >> 29 }while (p != NULL); > >> 30 > >> 31 printk ("vm_file address is:%d\tf_path address is:%d\ > >> 32 \tname is:%s",& p->vm_file->f_path,\ > >> 33 p->vm_file->f_path.dentry->d_iname); > >> 34 > >> 35 printk ("info from the kernel space:%s\n", thread->comm); > >> 36 return 0; > >> 37 } > >> 38 > >> 39 static void __exit printvma_exit (void) > >> 40 { > >> 41 printk ("the module will leave the kernel space..\n"); > >> 42 } > >> 43 > >> 44 module_init (printvma_init); > >> 45 module_exit (printvma_exit); > >> 46 MODULE_LICENSE ("GPL"); > >> > >> > >> what's wrong? > > > > > > It would be good if you paste your crash log here. > > > > Thanks, > > Arun > >> > >> > >> thanks > >> > >> _______________________________________________ > >> Kernelnewbies mailing list > >> [email protected] > >> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > >> > > > The module run in a virtual machine, I can't control the machine when it > crashed, so I just got a picture when the kernel panic. > > > > > > Thanks >
> > Fan > this is the pictiure: [image: 照片]
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