igt@testdisplay - timeout - Received signal SIGQUIT. Per-test timeout exceeded. Killing the current test with SIGQUIT.

https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_6474/shard-apl8/igt@testdisplay.html#dmesg-warnings6062

<4> [538.791578] [IGT] Per-test timeout exceeded. Killing the current test with SIGQUIT.
<6> [538.791953] sysrq: Show State
<6> [538.791995] task:systemd         state:S stack:11936 pid:    1 ppid:     0 flags:0x00000000
<6> [538.792038] Call Trace:
<6> [538.792050]  <TASK>
<6> [538.792085]  __schedule+0x42c/0xa90
<6> [538.792148]  schedule+0x3f/0xc0
<6> [538.792169]  schedule_hrtimeout_range_clock+0x119/0x130
<6> [538.792192]  ? do_epoll_wait+0x75f/0x910
<6> [538.792222]  ? _raw_write_unlock_irq+0x1f/0x40
<6> [538.792249]  ? lockdep_hardirqs_on+0xbf/0x130
<6> [538.792283]  do_epoll_wait+0x770/0x910
<6> [538.792355]  ? finish_wait+0x80/0x80
<6> [538.792408]  __x64_sys_epoll_wait+0x50/0x90
<6> [538.792426]  ? lockdep_hardirqs_on+0xbf/0x130
<6> [538.792463]  do_syscall_64+0x3a/0xb0
<6> [538.792489]  entry_SYSCALL_64_after_hwframe+0x44/0xae
<6> [538.792510] RIP: 0033:0x7f20943775ce
<6> [538.792526] RSP: 002b:00007fff02f996e0 EFLAGS: 00000293 ORIG_RAX: 00000000000000e8
<6> [538.792552] RAX: ffffffffffffffda RBX: 00005622509fa5b0 RCX: 00007f20943775ce
<6> [538.792565] RDX: 0000000000000051 RSI: 0000562250b30e50 RDI: 0000000000000004
<6> [538.792579] RBP: ffffffffffffffff R08: 0000000000000000 R09: 0000000000001cc0
<6> [538.792593] R10: 00000000ffffffff R11: 0000000000000293 R12: 0000000000000001
<6> [538.792608] R13: 0000000000000051 R14: 000056224f71e883 R15: 0000000000000000