KBL: igt@perf@non-zero-reason - timeout - Per-test timeout exceeded. Killing the current test with SIGQUIT.

https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_731/fi-kbl-soraka/igt@perf@non-zero-reason.html

Dmesg	
<6> [217.052574] Console: switching to colour dummy device 80x25
<6> [217.053734] [IGT] perf: executing
<6> [217.160137] Console: switching to colour frame buffer device 300x100
<6> [217.282296] [IGT] perf: starting subtest non-zero-reason
<7> [217.286241] i915 0000:00:02.0: [drm:i915_gem_context_create_ioctl [i915]] HW context 1 created
<7> [219.684907] i915 0000:00:02.0: [drm:edp_panel_vdd_off_sync [i915]] Turning [ENCODER:94:DDI A/PHY A] VDD off
<7> [219.685802] i915 0000:00:02.0: [drm:edp_panel_vdd_off_sync [i915]] PP_STATUS: 0x80000008 PP_CONTROL: 0x00000007
<7> [219.981759] i915 0000:00:02.0: [drm:intel_power_well_disable [i915]] disabling DC off
<7> [220.008194] i915 0000:00:02.0: [drm:skl_enable_dc6 [i915]] Enabling DC6
<7> [220.009023] i915 0000:00:02.0: [drm:gen9_set_dc_state [i915]] Setting DC state from 00 to 02
<4> [338.252606] [IGT] Per-test timeout exceeded. Killing the current test with SIGQUIT.
<6> [338.253243] sysrq: Show State
<6> [338.256287] task:systemd         state:S stack:12376 pid:    1 ppid:     0 flags:0x00000000
<6> [338.256432] Call Trace:
<6> [338.256548]  __schedule+0x339/0x950
<6> [338.256703]  schedule+0x38/0xe0
<6> [338.256772]  schedule_hrtimeout_range_clock+0x11b/0x130
<6> [338.256832]  ? ep_poll+0x4f4/0x560
<6> [338.257080]  ? _raw_write_unlock_irq+0x1f/0x40
<6> [338.257147]  ? lockdep_hardirqs_on+0xbf/0x130
<6> [338.257231]  ep_poll+0x514/0x560
<6> [338.257379]  ? finish_wait+0x80/0x80
<6> [338.257506]  do_epoll_wait+0xd2/0xf0
<6> [338.257610]  __x64_sys_epoll_wait+0x15/0x20
<6> [338.257663]  do_syscall_64+0x33/0x80
<6> [338.257716]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
<6> [338.257760] RIP: 0033:0x7f5d27ce6bb7
<6> [338.257801] RSP: 002b:00007fffbcc7a610 EFLAGS: 00000293 ORIG_RAX: 00000000000000e8
<6> [338.257986] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f5d27ce6bb7
<6> [338.258024] RDX: 0000000000000037 RSI: 00007fffbcc7a650 RDI: 0000000000000004
<6> [338.258063] RBP: 00007fffbcc7a650 R08: 0000000000000000 R09: 7465677261742e79
<6> [338.258107] R10: 00000000ffffffff R11: 0000000000000293 R12: 0000000000000037
<6> [338.258155] R13: 00000000ffffffff R14: 00007fffbcc7a650 R15: 0000000000000001
<6> [338.258384] task:kthreadd        state:S stack:13840 pid:    2 ppid:     0 flags:0x00004000