Can't login after boot with Kernel 4.10.12, soft lockup in systemd-logind

[machine-mind]

### Submission type

• [x ] Bug report
• Request for enhancement (RFE)

NOTE: Do not submit anything other than bug reports or RFEs via the issue tracker!

systemd version the issue has been seen with

output of systemd --version:

systemd 229 +PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ -LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN

NOTE: Do not submit bug reports about anything but the two most recently released systemd versions upstream!

Used distribution

Ubuntu Gnome 16.04 with Mainline Kernel 4.10.12

In case of bug report: Expected behavior you didn't see

Successful login after boot on the gnome login screen or over the shell. (Using Mainline Kernel Version 4.10.11, login works fine)

In case of bug report: Unexpected behavior you saw

After logging in to the gnome login screen, the system freezes. Trying to login using the shell (Ctr+Alt+F1) also freezes the system. The following ouptut appears on the shell repeatedly:
MI watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [systemd-logind:913]

In case of bug report: Steps to reproduce the problem

Boot Ubuntu Gnome 16.04 with Kernel 4.10.12 and try to login after boot.

[poettering]

Sorry, but that's a kernel problem. Please contact the kernel maintainers of your distro for help. Userspace should not be able to tirgger a soft lockup under any case in the kernel.