Re: limits.conf/stacksize doesn't seem to work?

From: Larry Rosenman <ler_at_lerctr.org>
Date: Fri, 15 Jul 2022 22:21:27 UTC
On 07/15/2022 5:18 pm, Mark Johnston wrote:
> On Fri, Jul 15, 2022 at 05:04:18PM -0500, Larry Rosenman wrote:
>> I'm using the following kernel config:
>> [...]
>> and the following login.conf:
>> [...]
>> bacula_dir:\
>> 	:stacksize-max=68719476736:\
>> 	:stacksize-cur=68719476736:\
>> 	:tc=daemon:
>> [...]
>> I've updated my (ler) password entry to reference bacula_dir:
>> ler:<elided>:1001:1001:bacula_dir:0:0:Larry
>> Rosenman:/home/ler:/usr/local/bin/zsh
>> 
>> 
>> when I ssh in, the stacklimit is still:
>> โฏ ulimit -H -s
>> 2097152
> 
> What is the value of the kern.maxssiz sysctl on this system?
> 
>> ler in ๐ŸŒ borg in sys/amd64/conf๐Ÿ”’ on ๎‚  ler/freebsd-main-changes:main on
>> โ˜๏ธ  (us-east-1)
>> โฏ ulimit -S -s
>> 2097152
>> 
>> ler in ๐ŸŒ borg in sys/amd64/conf๐Ÿ”’ on ๎‚  ler/freebsd-main-changes:main on
>> โ˜๏ธ  (us-east-1)
>> โฏ
>> 
>> Where does this number come from?  What am I missing here?
> 
> The stack limit cannot be set to an arbitrarily large number.  It will
> silently be clamped to maxssiz.

โฏ sysctl kern.maxssiz
kern.maxssiz: 2147483648


-- 
Larry Rosenman                     http://www.lerctr.org/~ler
Phone: +1 214-642-9640                 E-Mail: ler@lerctr.org
US Mail: 5708 Sabbia Dr, Round Rock, TX 78665-2106