On CI_DRM_3201 KBL-shards igt@gem_softpin@softpin softdog incomplete:

<7>[  706.728066] [drm:missed_breadcrumb [i915]] rcs0 missed breadcrumb at intel_breadcrumbs_hangcheck+0x61/0x80 [i915], irq posted? yes, current seqno=2e9, last=2e9
<5>[  718.760512] i915 0000:00:02.0: Resetting rcs0 after gpu hang
<7>[  718.761204] [drm:gen8_init_common_ring [i915]] Execlists enabled for rcs0
<7>[  718.761473] [drm:init_workarounds_ring [i915]] rcs0: Number of context specific w/a: 15
<2>[  731.212585] softdog: Initiating panic
<0>[  731.212652] Kernel panic - not syncing: Software Watchdog Timer expired
<4>[  731.212734] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G     U          4.14.0-rc4-CI-CI_DRM_3201+ #1
<4>[  731.212829] Hardware name:                  /NUC7i5BNB, BIOS BNKBL357.86A.0051.2017.0901.1328 09/01/2017
<4>[  731.212928] Call Trace:
<4>[  731.212967]  <IRQ>
<4>[  731.213016]  dump_stack+0x68/0x9f
<4>[  731.213069]  panic+0xd4/0x21d
<4>[  731.213121]  ? printk+0x43/0x4b
<4>[  731.213180]  softdog_fire+0x6b/0x70
<4>[  731.213234]  __hrtimer_run_queues+0xed/0x4d0
<4>[  731.213295]  ? softdog_ping+0x50/0x50
<4>[  731.213352]  hrtimer_interrupt+0xc1/0x220
<4>[  731.213415]  smp_apic_timer_interrupt+0x7d/0x2e0
<4>[  731.213476]  apic_timer_interrupt+0x9a/0xa0
<4>[  731.213530]  </IRQ>
<4>[  731.213570] RIP: 0010:cpuidle_enter_state+0x136/0x370
<4>[  731.213632] RSP: 0018:ffffc900000afe80 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff10
<4>[  731.213729] RAX: ffff88046c380040 RBX: 0000000001f9ad31 RCX: 0000000000000001
<4>[  731.213808] RDX: 0000000000000000 RSI: ffffffff81d0e3b4 RDI: ffffffff81cc212e
<4>[  731.213886] RBP: ffffc900000afeb8 R08: 000000000000bff1 R09: 0000000000000018
<4>[  731.213964] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000008
<4>[  731.214042] R13: 0000000000000008 R14: ffff88047eca59a0 R15: 000000aa3db000dc
<4>[  731.214143]  cpuidle_enter+0x17/0x20
<4>[  731.214197]  call_cpuidle+0x23/0x40
<4>[  731.214249]  do_idle+0x192/0x1e0
<4>[  731.214304]  cpu_startup_entry+0x1d/0x20
<4>[  731.214360]  start_secondary+0x11c/0x140
<4>[  731.214418]  secondary_startup_64+0xa5/0xa5
<0>[  731.214585] Kernel Offset: disabled


https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3201/shard-kbl7/igt@gem_softpin@softpin.html