Comment 15 for bug 1766201

About the first two errors ("Unable to open file ... x509_ima.der") they should be downgraded to warnings and this was previously addressed here:
https://lists.ubuntu.com/archives/kernel-team/2017-February/082526.html

Apparently this patch didn't get merged. I think we can easily apply this one.

About the other errors (synthetic uevent) it looks like a userspace daemon/program is sending incorrect data via sysfs (this could be caused by an old deprecated udev setting, or something else). Are they happening once at boot, for example when a particular device is detected / registered in the system, or they are reported periodically also when the system is running?

Thanks.