On 02/21, Tong Tiangen wrote:
>
> --- a/kernel/events/uprobes.c
> +++ b/kernel/events/uprobes.c
> @@ -506,6 +506,11 @@ int uprobe_write_opcode(struct arch_uprobe *auprobe,
> struct mm_struct *mm,
> if (ret <= 0)
> goto put_old;
>
> + if (is_zero_page(old_page)) {
> + ret = -EINVAL;
> + goto put_old;
> + }
I agree with David, the subject looks a bit misleading.
And. I won't insist, this is cosmetic, but if you send V2 please consider
moving the "verify_opcode()" check down, after the is_zero_page/PageCompound
checks.
Oleg.
