igt@i915_selftest@mock@requests - incomplete - kernel BUG at drivers/gpu/drm/i915/gt/intel_engine_pm.c, RIP: 0010:__engine_unpark
<4> [108.097301] ------------[ cut here ]------------
<2> [108.097316] kernel BUG at drivers/gpu/drm/i915/gt/intel_engine_pm.c:72!
<4> [108.097443] invalid opcode: 0000 [#1] PREEMPT SMP PTI
<4> [108.097461] CPU: 0 PID: 858 Comm: igt/0 Tainted: G U W 6.0.0-rc1-drmtip_1194-gd97b20df74df+ #1
<4> [108.097485] Hardware name: /NUC5CPYB, BIOS PYBSWCEL.86A.0079.2020.0420.1316 04/20/2020
<4> [108.097503] RIP: 0010:__engine_unpark+0x211/0x220 [i915]
<4> [108.097922] Code: 00 48 c7 c2 b0 da 79 a0 48 c7 c7 06 c5 5a a0 e8 25 2f c1 e0 bf 01 00 00 00 e8 bb fc c0 e0 31 f6 bf 09 00 00 00 e8 9f cb b0 e0 <0f> 0b 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 41 57 41 56 41 55 41
<4> [108.097957] RSP: 0018:ffffc90000627cb0 EFLAGS: 00010246
<4> [108.097973] RAX: 0000000000000240 RBX: ffff888004f10040 RCX: 0000000000000006
<4> [108.097989] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000009
<4> [108.098004] RBP: ffffc90000627cd0 R08: 0000000000000001 R09: 0000000000000001
<4> [108.098019] R10: 000000000008f3b8 R11: ffffc90000627b18 R12: ffff888011b70000
<4> [108.098035] R13: ffff8880344144e8 R14: ffff888011b70188 R15: ffff888011b70188
<4> [108.098051] FS: 0000000000000000(0000) GS:ffff888074400000(0000) knlGS:0000000000000000
<4> [108.098069] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [108.098083] CR2: 00005566339820a8 CR3: 0000000010a52000 CR4: 00000000001006f0
<4> [108.098099] Call Trace:
<4> [108.098110] <TASK>
<4> [108.098121] __intel_wakeref_get_first+0x46/0xb0 [i915]
<4> [108.098477] i915_active_acquire_preallocate_barrier+0x320/0x520 [i915]
<4> [108.098873] __intel_context_do_pin_ww+0x8dc/0xa00 [i915]
<4> [108.099234] intel_context_create_request+0x15d/0x1c0 [i915]
<4> [108.099594] ? 0xffffffffa0000000
<4> [108.099608] __mock_request_alloc+0x5/0x30 [i915]
<4> [108.100000] __igt_breadcrumbs_smoketest+0x232/0x6b0 [i915]
<4> [108.100394] ? lockdep_hardirqs_on+0xbf/0x140
<4> [108.100412] ? _raw_spin_unlock_irqrestore+0x3d/0x70
<4> [108.100430] ? i915_request_add+0x260/0x260 [i915]
<4> [108.100823] kthread+0xef/0x120
<4> [108.100837] ? kthread_complete_and_exit+0x20/0x20
<4> [108.100853] ret_from_fork+0x22/0x30
<4> [108.100872] </TASK>
<4> [108.100879] Modules linked in: i915(+) drm_display_helper drm_kms_helper prime_numbers ttm drm_buddy syscopyarea sysfillrect sysimgblt fb_sys_fops fuse coretemp kvm_intel btusb btrtl btbcm btintel kvm bluetooth ecdh_generic irqbypass ecc crct10dif_pclmul crc32_pclmul ghash_clmulni_intel r8169 i2c_i801 lpc_ich realtek i2c_smbus i2c_designware_pci i2c_ccgx_ucsi pinctrl_cherryview [last unloaded: i915]
<4> [108.110021] ---[ end trace 0000000000000000 ]---
<4> [108.408993] RIP: 0010:__engine_unpark+0x211/0x220 [i915]
<4> [108.409423] Code: 00 48 c7 c2 b0 da 79 a0 48 c7 c7 06 c5 5a a0 e8 25 2f c1 e0 bf 01 00 00 00 e8 bb fc c0 e0 31 f6 bf 09 00 00 00 e8 9f cb b0 e0 <0f> 0b 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 41 57 41 56 41 55 41
<4> [108.409460] RSP: 0018:ffffc90000627cb0 EFLAGS: 00010246
<4> [108.409477] RAX: 0000000000000240 RBX: ffff888004f10040 RCX: 0000000000000006
<4> [108.409493] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000009
<4> [108.409508] RBP: ffffc90000627cd0 R08: 0000000000000001 R09: 0000000000000001
<4> [108.409524] R10: 000000000008f3b8 R11: ffffc90000627b18 R12: ffff888011b70000
<4> [108.409540] R13: ffff8880344144e8 R14: ffff888011b70188 R15: ffff888011b70188
<4> [108.409556] FS: 0000000000000000(0000) GS:ffff888074400000(0000) knlGS:0000000000000000
<4> [108.409574] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [108.409588] CR2: 0000563ea731c000 CR3: 000000001172c000 CR4: 00000000001006f0