On 6 July 2016 at 00:09, Christopher Schultz <ch...@christopherschultz.net> wrote:
> > From what I understand a buffer overflow would only happen for > > FD_SET if the fd_set gets over 1024 descriptors. I made sure that > > my ulimit for open files is set and applied large enough, so that's > > not it. > > There's nothing magic about the ulimit. An fd_set should size > appropriately for your OS. On my Linux system, FD_SETSIZE happens to > be set to 1024. Reading through the byzantine labyrinth of includes, > it appears that FD_SET has zero boundary-checking, so it's therefore > possible that overflow will occur. Regarding the FD_SETSIZE, it is also set for me to 1024 although the ulimit is set higher. I'm a bit lost now on what I should do now. What makes me wonder is, that nobody else seems to hit this limitation of FD_SET and this makes me think something on my Linux machine is not right. What would you guys suggest? Should I file a bug report? My system runs stable now after the change to poll() and I don't hit that problem anymore. Thanks, Michael
