Re: [PATCH 0/2] Don't show PF_IO_WORKER in /proc//task/

Oleg Nesterov
2021-03-25T20:41:07Z

On 03/25, Eric W. Biederman wrote:
>
> So looking quickly the flip side of the coin is gdb (and other
> debuggers) needs a way to know these threads are special, so it can know
> not to attach.

may be,

> I suspect getting -EPERM (or possibly a different error code) when
> attempting attach is the right was to know that a thread is not
> available to be debugged.

may be.

But I don't think we can blame gdb. The kernel changed the rules, and this
broke gdb. IOW, I don't agree this is gdb bug.

Oleg.