root@IVB102:/opt/X11R7/src/intel-gpu-tools/tests# ./gem_busy --r hang-blt
IGT-Version: 1.15-ge3abb20 (x86_64) (Linux: 4.7.0-nightly+ x86_64)
(gem_busy:4252) igt-aux-CRITICAL: Test assertion failure function sig_abort, file igt_aux.c:401:
(gem_busy:4252) igt-aux-CRITICAL: Failed assertion: !"GPU hung"
Stack trace:
  #0 [__igt_fail_assert+0xf1]
  #1 [sig_abort+0x3a]
  #2 [killpg+0x40]
  #3 [munmap+0x7]
  #4 [one+0x424]
  #5 [__real_main377+0x3eb]
  #6 [main+0x29]
  #7 [__libc_start_main+0xf0]
  #8 [_start+0x29]
  #9 [<unknown>+0x29]
Subtest hang-blt failed.
**** DEBUG ****
(gem_busy:4252) ioctl-wrappers-DEBUG: Test requirement passed: gem_has_ring(fd, ring)
(gem_busy:4252) DEBUG: Test requirement passed: !(gen == 6 && e->exec_id == I915_EXEC_BSD)
(gem_busy:4252) DEBUG: Test requirement passed: __gem_execbuf(fd, &execbuf) == 0
(gem_busy:4252) igt-aux-CRITICAL: Test assertion failure function sig_abort, file igt_aux.c:401:
(gem_busy:4252) igt-aux-CRITICAL: Failed assertion: !"GPU hung"
****  END  ****
Subtest hang-blt: FAIL (83.567s)