Created attachment 651027 [details]
yast2-log and udev information

Trying to modify the bootloader setup, YaST2-Bootloader complains:

Internal error. Please report a bug report with logs.
Details: Unknown udev device /dev/disk/by-id/wwn-0x50025388a064af10-part3
Caller:  /usr/share/YaST2/lib/bootloader/udev_mapping.rb:42:in
`to_kernel_device'

Then crashes on user acknowledge.
The offending partition is mounted as / (root) and is where the bootloader code
is stored.
The disk is a plain MBR formatted SSD that worked for years, no RAID or LVM or
the like.

Looking at the attached details it's no wonder that udev_mapping.rb at line 42
complains.

Reproducible: always
Tested with Tumbleweed 20151002 X86_64 (but the problem is likely there from
the last few snapshots)