igt@gem_sync@basic-(many-each|store-each) - fail/dmesg-fail - Failed assertion: !"GPU hung"

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7590/fi-byt-squawks/igt@gem_sync@basic-many-each.html

Starting subtest: basic-many-each
(gem_sync:2116) igt_aux-CRITICAL: Test assertion failure function sig_abort, file ../lib/igt_aux.c:502:
(gem_sync:2116) igt_aux-CRITICAL: Failed assertion: !"GPU hung"
Subtest basic-many-each failed.
**** DEBUG ****
(gem_sync:2116) igt_debugfs-DEBUG: Opening debugfs directory '/sys/kernel/debug/dri/0'
(gem_sync:2116) igt_debugfs-DEBUG: Opening debugfs directory '/sys/kernel/debug/dri/0'
(gem_sync:2116) igt_aux-CRITICAL: Test assertion failure function sig_abort, file ../lib/igt_aux.c:502:
(gem_sync:2116) igt_aux-CRITICAL: Failed assertion: !"GPU hung"
(gem_sync:2116) igt_core-INFO: Stack trace:
(gem_sync:2116) igt_core-INFO:   #0 ../lib/igt_core.c:1877 __igt_fail_assert()
(gem_sync:2116) igt_core-INFO:   #1 [sig_abort+0x3a]
(gem_sync:2116) igt_core-INFO:   #2 [killpg+0x40]
(gem_sync:2116) igt_core-INFO:   #3 ../sysdeps/unix/sysv/linux/wait.c:29 wait()
(gem_sync:2116) igt_core-INFO:   #4 ../lib/igt_core.c:2160 __igt_waitchildren()
(gem_sync:2116) igt_core-INFO:   #5 ../lib/igt_core.c:2211 igt_waitchildren()
(gem_sync:2116) igt_core-INFO:   #6 ../tests/i915/gem_sync.c:966 store_many()
(gem_sync:2116) igt_core-INFO:   #7 ../tests/i915/gem_sync.c:1256 __real_main1210()
(gem_sync:2116) igt_core-INFO:   #8 ../tests/i915/gem_sync.c:1210 main()
(gem_sync:2116) igt_core-INFO:   #9 ../csu/libc-start.c:344 __libc_start_main()
(gem_sync:2116) igt_core-INFO:   #10 [_start+0x2a]
****  END  ****
Subtest basic-many-each: FAIL (6.825s)
gem_sync: ../lib/igt_core.c:1933: igt_exit: Assertion `!num_test_children' failed.
Received signal SIGABRT.
Stack trace: 
 #0 [fatal_sig_handler+0xd6]
 #1 [killpg+0x40]
 #2 [gsignal+0xc7]
 #3 [abort+0x141]
 #4 [uselocale+0x33a]
 #5 [__assert_fail+0x42]
 #6 [igt_exit+0x133]
 #7 [main+0x2c]
 #8 [__libc_start_main+0xe7]
 #9 [_start+0x2a]
````