Issue: kernel panic when repeating plug/unplug USB device(e.g. USB flash disk) in Linux 4.1.15
The issue is in kernel BLOCK DEVICE, this is not a hardware related issue(happens to all devices running L4.1.15 or L4.4.x), please refer to following link on kernel.org for more details and fixes:
blockdev kernel regression (bugzilla 173031) - Patchwork
