Re: stack overflow in getaddrinfo(3) with a small-sized stack in pthreads

[Steffen Nurpmeso <steffen%sdaoden.eu@localhost>]

Steffen Nurpmeso wrote in
 <20211129173130.B55BA%steffen%sdaoden.eu@localhost>:
 |Joerg Sonnenberger wrote in
 | <YaT9P6a+AlEm3w7h%bec.de@localhost>:
 ||On Mon, Nov 29, 2021 at 08:38:35PM +0700, Robert Elz wrote:
 ||> DNS queries (via UDP) are limited to max 512, as that is what the
 ||> protocol always required, so can be handled by everything (or should \
 ||> be).
 ||
 ||Strictly speaking, it is the minimum MTU every IPv4 implementation is
 ||supposed to allow. IPv6 bumped it to 1280.
 |
 |RFC 1035 says
 |
 |  2.3.4. Size limits
 |  ...
 |  UDP messages    512 octets or less
 |
 |If no EDNS is in use the answer should be pretty small also.
 |Also see RFC 2671, but i have forgotten about all that.

Ah ya the OPT RR also mentions MTU.  Sorry.

--steffen
|
|Der Kragenbaer,                The moon bear,
|der holt sich munter           he cheerfully and one by one
|einen nach dem anderen runter  wa.ks himself off
|(By Robert Gernhardt)