On Fri, 30 Nov 2007 16:22:50 +0100 Jesper Nilsson <[EMAIL PROTECTED]> wrote:
> +#ifdef CONFIG_DEBUG_BUGVERBOSE > +void > +handle_BUG(struct pt_regs *regs) > { > - asm volatile("setf m"); > + struct bug_frame f; > + unsigned char c; > + unsigned long irp = regs->irp; > + > + if (__copy_from_user(&f, (const void __user *)(irp - 8), sizeof f)) > + return; > + if (f.prefix != BUG_PREFIX || f.magic != BUG_MAGIC) > + return; > + if (__get_user(c, f.filename)) > + f.filename = "<bad filename>"; > + > + printk("kernel BUG at %s:%d!\n", f.filename, f.line); > } > +#endif Why is it accessing user memory in the BUG handler? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/