Hi all, I am trying to hard lockup my Linux system (Debian) for evaluating some crash report mechanism. Basically, what I want to do is to load a module that will cause a non-interruptible hang. I found the following code on this website (http://oslearn.blogspot.com/2011/04/use-nmi-watchdog.html), but the module fails to hard lockup my system: #include <linux/module.h> #include <linux/kernel.h> /* printk() */ int init_module(void) { unsigned long flags; static spinlock_t lock; spin_lock_init(&lock); spin_lock_irqsave(&lock, flags); printk(KERN_INFO "Hello, world\n"); spin_lock_irqsave(&lock, flags); //spin_lock(&lock); printk(KERN_INFO "Hello, world\n"); return 0; } void cleanup_module(void) { printk(KERN_INFO "Goodbye cruel world\n"); } Could anyone please let me know how can I achieve this? Thanks in advance. John K. _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
