[Bug 112157] New: [CI][SHARDS]igt at kms_frontbuffer_tracking@psr-modesetfrombusy - dmesg-warn - GEM_BUG_ON(((tail) & ~((__typeof__(tail))((64)-1))) == ((ring->head) & ~((__typeof__(ring->head))((64)-1))) && tail < ring->head)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=112157

            Bug ID: 112157
           Summary: [CI][SHARDS]igt at kms_frontbuffer_tracking@psr-modesetfr
                    ombusy - dmesg-warn -  GEM_BUG_ON(((tail) &
                    ~((__typeof__(tail))((64)-1))) == ((ring->head) &
                    ~((__typeof__(ring->head))((64)-1))) && tail <
                    ring->head)
           Product: DRI
           Version: DRI git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: not set
          Priority: not set
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: lakshminarayana.vudum at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7181/shard-skl5/igt@kms_frontbuffer_tracking@psr-modesetfrombusy.html
<3> [3763.145559] assert_ring_tail_valid:101 GEM_BUG_ON(((tail) &
~((__typeof__(tail))((64)-1))) == ((ring->head) &
~((__typeof__(ring->head))((64)-1))) && tail < ring->head)
<4> [3763.147091] ------------[ cut here ]------------
<2> [3763.147119] kernel BUG at drivers/gpu/drm/i915/gt/intel_ring.h:101!
<4> [3763.147183] invalid opcode: 0000 [#1] PREEMPT SMP PTI
<4> [3763.147207] CPU: 0 PID: 6422 Comm: kworker/0:5 Tainted: G     U          
 5.4.0-rc4-CI-CI_DRM_7181+ #1
<4> [3763.147220] Hardware name: Google Caroline/Caroline, BIOS MrChromebox
08/27/2018
<4> [3763.147245] Workqueue: events delayed_fput
<4> [3763.147593] RIP: 0010:assert_ring_tail_valid.part.38+0x45/0x50 [i915]
<7> [3763.147930] [drm:intel_atomic_check [i915]] [CONNECTOR:95:eDP-1] Limiting
display bpp to 24 instead of EDID bpp 24, requested bpp 36, max platform bpp 36
<4> [3763.147962] Code: aa 93 f1 e0 48 8b 35 32 cc 25 00 49 c7 c0 58 5a 39 a0
b9 65 00 00 00 48 c7 c2 d0 ea 36 a0 48 c7 c7 50 1c 21 a0 e8 7b 8f f8 e0 <0f> 0b
66 0f 1f 84 00 00 00 00 00 8b 47 2c f7 d8 83 c8 07 85 f0 74
<4> [3763.147980] RSP: 0018:ffffc90000003e00 EFLAGS: 00010086
<4> [3763.148002] RAX: 0000000000000025 RBX: ffff8881444c79c0 RCX:
0000000000000000
<4> [3763.148018] RDX: 0000000000000001 RSI: 0000000000000004 RDI:
ffff88817a097000
<4> [3763.148034] RBP: ffffc90010eab0e0 R08: 00000000003c2541 R09:
ffff888161efb000
<4> [3763.148046] R10: 00000000fc0219bd R11: ffff88817a097000 R12:
ffffc90010eab108
<4> [3763.148055] R13: 0000000000000001 R14: ffff8881444c0040 R15:
ffff88816cc92000
<4> [3763.148067] FS:  0000000000000000(0000) GS:ffff88817aa00000(0000)
knlGS:0000000000000000
<4> [3763.148077] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [3763.148087] CR2: 00007f8c17dc3470 CR3: 0000000134c60005 CR4:
00000000003606f0
<4> [3763.148093] Call Trace:
<4> [3763.148105]  <IRQ>
<4> [3763.148440]  assert_ring_tail_valid+0x6a/0x70 [i915]
<7> [3763.148781] [drm:intel_dp_compute_config [i915]] DP link computation with
max lane count 4 max rate 270000 max bpp 24 pixel clock 252750KHz
<4> [3763.149134]  gen8_emit_fini_breadcrumb+0xa3/0x1b0 [i915]
<4> [3763.149549]  __i915_request_submit+0x29b/0x430 [i915]
<4> [3763.149911]  __execlists_submission_tasklet+0x6a6/0x16a0 [i915]
<4> [3763.150260]  execlists_submission_tasklet+0xf2/0x110 [i915]
<4> [3763.150286]  tasklet_action_common.isra.18+0x6c/0x1c0
<4> [3763.150311]  __do_softirq+0xdf/0x47f
<4> [3763.150339]  irq_exit+0xba/0xc0
<7> [3763.150678] [drm:intel_dp_compute_config [i915]] Force DSC en = 0
<4> [3763.150710]  do_IRQ+0x83/0x160
<4> [3763.150748]  common_interrupt+0xf/0xf
<4> [3763.150765]  </IRQ>
<4> [3763.150791] RIP: 0010:_raw_spin_unlock_irqrestore+0x4e/0x60
<4> [3763.150810] Code: c7 02 75 1f 53 9d e8 91 86 7b ff bf 01 00 00 00 e8 57
f0 6f ff 65 8b 05 28 2e 63 7e 85 c0 74 0c 5b 5d c3 e8 74 84 7b ff 53 9d <eb> df
e8 7b eb 61 ff 5b 5d c3 0f 1f 84 00 00 00 00 00 53 48 89 fb
<4> [3763.150826] RSP: 0018:ffffc900009afb70 EFLAGS: 00000202 ORIG_RAX:
ffffffffffffffdb
<4> [3763.150847] RAX: ffff88812a50a840 RBX: 0000000000000202 RCX:
0000000000000000
<4> [3763.150862] RDX: 00000000000005d2 RSI: ffff88812a50b0f8 RDI:
ffffffff8213be21
<4> [3763.150878] RBP: ffff88810ea70890 R08: ffff88812a50b0f8 R09:
0000000000000000
<4> [3763.150893] R10: 0000000000000000 R11: 0000000000000000 R12:
ffff88810ea70890
<4> [3763.150908] R13: 0000000000000202 R14: ffffea000572a740 R15:
000000000000000b
<4> [3763.150965]  delete_from_page_cache+0x4b/0x70
<4> [3763.150995]  truncate_inode_page+0x1d/0x30
<4> [3763.151017]  shmem_undo_range+0x1d5/0x890
<4> [3763.151112]  shmem_truncate_range+0x11/0x30
<4> [3763.151135]  shmem_evict_inode+0xe1/0x250
<4> [3763.151158]  ? evict+0xb5/0x190
<4> [3763.151191]  evict+0xcb/0x190
<4> [3763.151213]  __dentry_kill+0xd7/0x180
<4> [3763.151237]  __fput+0x113/0x250
<4> [3763.151275]  delayed_fput+0x17/0x30
<4> [3763.151305]  process_one_work+0x26a/0x620
<7> [3763.151659] [drm:intel_dp_compute_config [i915]] DP lane count 4 clock
270000 bpp 24
<4> [3763.151708]  worker_thread+0x37/0x380
<4> [3763.151736]  ? process_one_work+0x620/0x620
<4> [3763.151767]  kthread+0x119/0x130
<4> [3763.151791]  ? kthread_park+0x80/0x80
<4> [3763.151826]  ret_from_fork+0x3a/0x50
<4> [3763.151876] Modules linked in: vgem snd_hda_codec_hdmi snd_hda_intel
snd_intel_nhlt snd_hda_codec x86_pkg_temp_thermal i915 coretemp snd_hwdep
crct10dif_pclmul crc32_pclmul snd_hda_core ghash_clmulni_intel btusb btrtl
snd_pcm btbcm btintel bluetooth cdc_ether usbnet r8152 mii ecdh_generic ecc
i2c_hid pinctrl_sunrisepoint pinctrl_intel prime_numbers
<0> [3763.151977] Dumping ftrace buffer:
<7> [3763.152386] [drm:intel_dp_compute_config [i915]] DP link rate required
758250 available 1080000
<0> [3763.152390] ---------------------------------

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