Bug 112358

https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_405/fi-skl-6700k2/igt@kms_flip@2x-flip-vs-suspend.html
<4> [397.344430] hbm: wrong command 0
<4> [397.344456] WARNING: CPU: 1 PID: 2893 at drivers/misc/mei/hbm.c:1358 mei_hbm_dispatch+0xc5/0xe20 [mei]
<4> [397.344457] Modules linked in: vgem snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic mei_hdcp i915 x86_pkg_temp_thermal coretemp snd_hda_intel snd_intel_dspcfg crct10dif_pclmul snd_hda_codec crc32_pclmul snd_hwdep snd_hda_core ghash_clmulni_intel e1000e snd_pcm ptp pps_core mei_me mei prime_numbers
<4> [397.344468] CPU: 1 PID: 2893 Comm: irq/130-mei_me Tainted: G     U            5.4.0-rc7-g315d68345bfe-drmtip_405+ #1
<4> [397.344469] Hardware name: System manufacturer System Product Name/Z170 PRO GAMING, BIOS 0802 09/02/2015
<4> [397.344472] RIP: 0010:mei_hbm_dispatch+0xc5/0xe20 [mei]
<4> [397.344474] Code: 40 80 fe 11 0f 84 db 04 00 00 40 80 fe 81 0f 84 d5 01 00 00 40 80 fe 0f 0f 84 47 05 00 00 48 c7 c7 f6 61 1b c0 e8 eb 88 f0 dd <0f> 0b b8 b9 ff ff ff eb 8d 48 8b 33 48 c7 c2 a0 6e 1b c0 48 c7 c7
<4> [397.344475] RSP: 0018:ffffbcc7c1cf3d78 EFLAGS: 00010286
<4> [397.344477] RAX: 0000000000000000 RBX: ffffa1c803dfc018 RCX: 0000000000000001
<4> [397.344479] RDX: 0000000080000001 RSI: ffffa1c805d730d0 RDI: 00000000ffffffff
<4> [397.344480] RBP: ffffa1c803dfc3d8 R08: ffffa1c805d730d0 R09: 0000000000000000
<4> [397.344481] R10: ffffbcc7c1cf3e38 R11: 0000000000000000 R12: ffffbcc7c1cf3e44
<4> [397.344483] R13: ffffa1c803dfc5d8 R14: ffffbcc7c1cf3e48 R15: ffffa1c805d72840
<4> [397.344484] FS:  0000000000000000(0000) GS:ffffa1c80da80000(0000) knlGS:0000000000000000
<4> [397.344485] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [397.344486] CR2: 00007f4e3d176778 CR3: 00000001a6410003 CR4: 00000000003606e0
<4> [397.344488] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
<4> [397.344490] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
<4> [397.344491] Call Trace:
<4> [397.344496]  ? finish_task_switch+0x96/0x250
<4> [397.344503]  mei_irq_read_handler+0x125/0x700 [mei]
<4> [397.344507]  ? rcu_read_lock_sched_held+0x4d/0x80
<4> [397.344514]  mei_me_irq_thread_handler+0x1fe/0x940 [mei_me]
<4> [397.344517]  ? __schedule+0x2f9/0x810
<4> [397.344523]  ? irq_forced_thread_fn+0x70/0x70
<4> [397.344526]  irq_thread_fn+0x1c/0x60
<4> [397.344529]  ? irq_thread+0x9c/0x1a0
<4> [397.344532]  irq_thread+0x102/0x1a0
<4> [397.344535]  ? wake_threads_waitq+0x30/0x30
<4> [397.344540]  ? irq_thread_dtor+0x90/0x90
<4> [397.344542]  kthread+0x119/0x130
<4> [397.344545]  ? kthread_park+0x80/0x80
<4> [397.344549]  ret_from_fork+0x3a/0x50
<4> [397.344559] irq event stamp: 258
<4> [397.344562] hardirqs last  enabled at (257): [<ffffffff9e12fb75>] vprintk_emit+0x315/0x340
<4> [397.344564] hardirqs last disabled at (258): [<ffffffff9e001c0a>] trace_hardirqs_off_thunk+0x1a/0x20
<4> [397.344566] softirqs last  enabled at (148): [<ffffffff9ee00385>] __do_softirq+0x385/0x47f
<4> [397.344569] softirqs last disabled at (135): [<ffffffff9e0bcb0a>] irq_exit+0xba/0xc0
<4> [397.344570] ---[ end trace 78e09b7a76e5d2e6 ]---