dump stack before kill all

- If problematic process is from user, kill all kills
  it and dump does not show problematic process.

bug: 37737296
Test: reboot and check log

Merged-In: Iaa4f7d12f5a40fa7528c6672567c36e30b140372
Change-Id: Iaa4f7d12f5a40fa7528c6672567c36e30b140372