>>> Mantas Mikulenas <graw...@gmail.com> schrieb am 23.08.2019 um 05:55 in Nachricht <capwny8wrwmv4cs_crovp20q_4axuup1cun-xjwoo4+t3xom...@mail.gmail.com>: > On Thu, Aug 22, 2019, 16:38 Ulrich Windl <ulrich.wi...@rz.uni-regensburg.de> > wrote: > >> >>> systemd tag bot <donotreply-systemd-...@refi64.com> schrieb am >> 22.08.2019 >> um >> 13:56 in Nachricht <20190822115637.1.05c510c92b339...@refi64.com>: >> > A new systemd ☠️ pre-release ☠️ has just been tagged. Please download >> the >> > tarball here: >> >> >> > * On 64 bit systems, the "kernel.pid_max" sysctl is now bumped to >> > 4194304 by default, i.e. the full 22bit range the kernel >> allows, >> > up >> > from the old 16bit range. This should improve security and >> > robustness, as PID collisions are made less likely (though >> >> I doubt it's increasing robustness for any existing application as >> pid_traditionally was 16 bit. I don't know if some applications try to >> sprintf() a pid into a char[6], but if they do, it might cause an >> application >> failure... >> > > > I've been using this value for at least 5 years, and did expect many issues > at first, but so far haven't encountered any at all. > > (I do kind of suspect that if there are any programs affected by this and > without source code available, they would be so old that they wouldn't > really run on a bleeding-edge distro anyway...)
Having read some C questions in stackoverflow yesterday, I'm afraid there are quite a lot of programmers out there writing code you couldn't even imagine in your most terrible nightmares ;-) So distribution code may be safe, but some in-house stuff or even "commercial" stuff may be horrible: (Not to long ago I had a problem that some commercial application only started up if the text terminal was wider than 80 characters. Why? The C program called "ps" internally, and that in turn truncated output lines depending on the value of COLUMNS environment...) I think you really don't know what the most terrible imaginable programmer can write... ;-) Or maybe the infamous Ariane V failure: They reused software they had tested before, but the hardware was different ;-) Regards, Ulrich _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/systemd-devel
