OK, I think I've followed instructions here. I built with the '#define SANDBOX_SECCOMP_FILTER_DEBUG 1' uncommented. Recalling at long last that Ubuntu is Debian (I use Red Hat/CentOS at work and get them confused), I used 'dpkg-buildpackage -rfakeroot -uc -b' to do the build; hope that's OK. I also found that I needed to comment away the four'#include' lines that follow the SANDBOX_SECCOMP_FILTER_DEBUG definition, or else I got many errors relating to conflicting structure definitions.
Attached tarball 'ssd-test-20171025.tar.gz' contains 'sshd.log', the result of running 'sudo sshd -p 2222 -ddd'. It also contains an etc/ hierarchy that includes the current /etc/ssh/sshd_config and the relevant files from /etc/pam.d. I also threw in the result of 'strace -f' applied to that command, in case it helps narrow the point of failure further. I took a quick troll through the output, and I don't *think* I see it revealing more than a few bytes of a private key. Thanks for responding! I hope this stuff helps to move the walls in on the problem. ** Attachment added: "Requested files from test on 2017-10-25" https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1690485/+attachment/4995762/+files/sshd-test-20171025.tar.gz -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1690485 Title: openssh-server SIGSYS with 'UsePrivilegeSeparation sandbox' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1690485/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
