[Bug 101642] New: [KBL] igt at gem_ctx_switch@ blt-interruptible GuC 9.14 triggers GEM_BUG_ON(!i915_gem_request_completed(request));

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101642

            Bug ID: 101642
           Summary: [KBL] igt at gem_ctx_switch@ blt-interruptible GuC 9.14
                    triggers
                    GEM_BUG_ON(!i915_gem_request_completed(request));
           Product: DRI
           Version: DRI git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: mika.kuoppala at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

HW: 00:02.0 0300: 8086:5916 (rev 02)

Steps to reproduce:
while ./gem_ctx_switch --r blt-interruptible ; do date ; done

~1% occurrence

Dmesg:

[13873.317628] [IGT] gem_ctx_switch: executing
[13873.325119] [IGT] gem_ctx_switch: starting subtest blt-interruptible
[14008.318651] ------------[ cut here ]------------
[14008.318653] kernel BUG at drivers/gpu/drm/i915/i915_gem_request.c:323!
[14008.318663] invalid opcode: 0000 [#1] SMP
[14008.318668] Modules linked in: snd_hda_codec_hdmi snd_hda_codec_realtek
snd_hda_codec_generic x86_pkg_temp_thermal intel_powerclamp coretemp
crct10dif_pclmul crc32_pclmul snd_hda_intel snd_hda_codec ghash_clmulni_intel
snd_hwdep snd_hda_core snd_pcm mei_me mei i915 r8169 mii prime_numbers i2c_hid
[14008.318707] CPU: 3 PID: 2066 Comm: gem_ctx_switch Tainted: G     U         
4.12.0-rc7-svmtest+ #150
[14008.318715] Hardware name: Acer Aspire E5-575G/Ironman_SK  , BIOS V1.12
08/02/2016
[14008.318723] task: ffff8801ddc1b200 task.stack: ffffc90001ec0000
[14008.318754] RIP: 0010:i915_gem_request_retire+0x4a7/0x550 [i915]
[14008.318760] RSP: 0018:ffffc90001ec3b00 EFLAGS: 00010283
[14008.318765] RAX: 000000002fe501f7 RBX: ffff8801e1503600 RCX:
000000002fe501f7
[14008.318771] RDX: 000000002fe501b8 RSI: ffff8801dd97b800 RDI:
ffff8801e1503600
[14008.318778] RBP: ffffc90001ec3b30 R08: 0000000000000000 R09:
0000000000000000
[14008.318784] R10: ffffc90001ec3b28 R11: ffffffffa0082016 R12:
ffff8801dde88000
[14008.318791] R13: ffff8801dc240000 R14: ffff8801dde88000 R15:
ffff8801d9a8e000
[14008.318797] FS:  00007f5c3c17a2c0(0000) GS:ffff8801e8400000(0000)
knlGS:0000000000000000
[14008.318805] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[14008.318811] CR2: 000055fa1b9c5028 CR3: 00000001dbb93000 CR4:
00000000003406e0
[14008.318818] Call Trace:
[14008.318841]  i915_gem_request_alloc+0xbe/0x400 [i915]
[14008.318864]  i915_gem_do_execbuffer+0x52b/0x11f0 [i915]
[14008.318874]  ? lock_acquire+0xb0/0x1e0
[14008.318880]  ? lock_acquire+0xb0/0x1e0
[14008.318902]  i915_gem_execbuffer2+0xbe/0x1d0 [i915]
[14008.318909]  drm_ioctl+0x1f3/0x470
[14008.318928]  ? i915_gem_execbuffer+0x2d0/0x2d0 [i915]
[14008.318937]  ? trace_hardirqs_on+0xd/0x10
[14008.318944]  do_vfs_ioctl+0x8f/0x6d0
[14008.318951]  SyS_ioctl+0x3c/0x70
[14008.318957]  entry_SYSCALL_64_fastpath+0x1c/0xb1
[14008.318962] RIP: 0033:0x7f5c3a976587
[14008.318967] RSP: 002b:00007ffc27e6fa28 EFLAGS: 00000246 ORIG_RAX:
0000000000000010
[14008.318976] RAX: ffffffffffffffda RBX: 00007ffc27e6fa40 RCX:
00007f5c3a976587
[14008.318982] RDX: 00007ffc27e6fb90 RSI: 0000000040406469 RDI:
0000000000000003
[14008.318989] RBP: 0000000000000003 R08: 000000000000000b R09:
00007f5c3c17a248
[14008.318995] R10: 0000000000000000 R11: 0000000000000246 R12:
0000000040406469
[14008.319003] R13: 00007ffc27e6fb90 R14: 0000000000000000 R15:
0000000000000047
[14008.319012] Code: 0f 85 a7 fb ff ff 48 c7 c6 e0 4d 17 a0 48 c7 c7 8b 40 16
a0 e8 4e e9 0c e1 0f ff 8b 83 78 01 00 00 85 c0 0f 8e 92 fb ff ff 0f 0b <0f> 0b
65 ff 05 c0 ed f7 5f 48 8b 05 d1 1a 11 00 e8 44 0a 05 e1 
[14008.319098] RIP: i915_gem_request_retire+0x4a7/0x550 [i915] RSP:
ffffc90001ec3b00
[14008.319121] ---[ end trace fb5365ed3bdbd8f5 ]---

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