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/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
