Re: sw_sync deadlock avoidance, take 3

Hi,

On Wed, 15 Jul 2020 at 11:23, Bas Nieuwenhuizen bas@basnieuwenhuizen.nl wrote:

My concern with going in this direction was that we potentially allow an application to allocate a lot of kernel memory but not a lot of fds by creating lots of fences and then closing the fds but never signaling them. Is that not an issue?

sw_sync is a userspace DoS mechanism by design - if someone wants to enable and use it, they have bigger problems than unbounded memory allocations.

Cheers, Daniel