Sep 09 08:31:01 seraph kernel: ssh-pkcs11-help[377564]: segfault at 7ffd01d23d90 ip 00007f254d06b037 sp 00007ffd01d23d90 error 6 in libc.so.6[7f254d028000+16e000]
Hello Julien, probably you could install systemd-coredump. Then the journal should contain a backtrace where the process would segfault. More information about collecting more information are here: https://wiki.debian.org/HowToGetABacktrace Kind regards, Bernhard