Re: BKL use in ptrace

Oleg Nesterov
2009-12-21T16:09:06Z

(add Roland)

On 12/20, Andi Kleen wrote:
>
> ptrace has this comment/BKL use:
>
> /*
> * This lock_kernel fixes a subtle race with suid exec
> */
> lock_kernel();
>
> But unless I'm blind I don't see execve actually getting the BKL
> anywhere. So is this comment outdated or misleading (is the race with exit?)
> or is there a bug?

I never understood this lock_kernel().

In any case it looks outdated. We were going to kill it "soon",
along with other ptrace changes.

Oleg.