Thanks. I missed that ProcessSizeMax= only affects the generation of the
stack trace (but not the core dump file generation).
I set ProcessSizeMax=10K and the core is not stored:
```
$ journalctl -t systemd-coredump -b
Jan 04 14:11:56 systemd-coredump[426009]: The core will not be stored: size
17546 is greater than 10240 (the configured maximum)
$ coredumpctl
TIME PID UID GID SIG COREFILE EXE
SIZE
Thu 2024-01-04 18:13:03 CET 452168 1000 1000 SIGILL none
/usr/bin/divide-by-zero -
```
Shouldn't the core be truncated instead?
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Touch seeded packages, which is subscribed to systemd in Ubuntu.
https://bugs.launchpad.net/bugs/2048083
Title:
[systemd-coredump] ProcessSizeMax setting does not seem to have any
effect
Status in systemd package in Ubuntu:
Incomplete
Bug description:
The systemd-coredump ProcessSizeMax setting does not seem to have any
effect. Steps to reproduce:
```
sudo apt install chaos-marmosets systemd-coredump
sudo mkdir /etc/systemd/coredump.conf.d/
printf "[Coredump]\nProcessSizeMax=10K\n" | sudo tee
/etc/systemd/coredump.conf.d/limit.conf
divide-by-zero
```
Running `coredumpctl` shows that the dump was written in full size,
but the ProcessSizeMax should have caused the dump to be truncated.
```
TIME PID UID GID SIG COREFILE EXE
SIZE
Thu 2024-01-04 14:39:44 CET 427840 1000 1000 SIGILL present
/usr/bin/divide-by-zero 17.1K
```
DistroRelease: Ubuntu 23.10
Package: systemd-coredump 253.5-1ubuntu6.1
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