Bug 106207 - [CI] igt@kms_* - dmesg-warn - unknown DP link BW code .., using 162000
Summary: [CI] igt@kms_* - dmesg-warn - unknown DP link BW code .., using 162000
Status: REOPENED
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: XOrg git
Hardware: Other All
: high normal
Assignee: Intel GFX Bugs mailing list
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard: ReadyForDev
Keywords:
Depends on:
Blocks:
 
Reported: 2018-04-24 10:50 UTC by Martin Peres
Modified: 2018-07-20 08:17 UTC (History)
1 user (show)

See Also:
i915 platform: BSW/CHT
i915 features: display/DP


Attachments

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Description Martin Peres 2018-04-24 10:50:13 UTC
https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_25/fi-bsw-n3050/igt@kms_cursor_crc@cursor-256x256-suspend.html

https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_25/fi-bsw-n3050/igt@kms_cursor_crc@cursor-64x64-suspend.html

https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_25/fi-bsw-n3050/igt@kms_cursor_legacy@cursor-vs-flip-varying-size.html

https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_25/fi-bsw-n3050/igt@kms_properties@connector-properties-atomic.html

[   96.758705] ------------[ cut here ]------------
[   96.758711] unknown DP link BW code 11, using 162000
[   96.758743] WARNING: CPU: 1 PID: 1256 at drivers/gpu/drm/drm_dp_helper.c:159 drm_dp_bw_code_to_link_rate+0x3b/0x50
[   96.758748] Modules linked in: btusb btrtl btbcm btintel bluetooth ecdh_generic snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic intel_powerclamp i915 coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core r8169 lpc_ich mii snd_pcm prime_numbers pinctrl_cherryview
[   96.758872] CPU: 1 PID: 1256 Comm: kms_properties Tainted: G     U  W         4.17.0-rc1-gb463d8719fbd-drmtip_25+ #1
[   96.758878] Hardware name:  /NUC5CPYB, BIOS PYBSWCEL.86A.0058.2016.1102.1842 11/02/2016
[   96.758884] RIP: 0010:drm_dp_bw_code_to_link_rate+0x3b/0x50
[   96.758890] RSP: 0018:ffffaf6700befb08 EFLAGS: 00010282
[   96.758900] RAX: 0000000000000000 RBX: ffff8f1f68d20110 RCX: 0000000000000001
[   96.758905] RDX: 0000000080000001 RSI: ffffffffaa084f36 RDI: 00000000ffffffff
[   96.758910] RBP: ffff8f1f68d20110 R08: 00000000140f5de1 R09: 0000000000000000
[   96.758915] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8f1f68d90000
[   96.758920] R13: ffff8f1f68d81bf8 R14: ffffffffc030cc60 R15: ffff8f1f68d90000
[   96.758926] FS:  00007fb474d2f980(0000) GS:ffff8f1f7fd00000(0000) knlGS:0000000000000000
[   96.758931] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   96.758936] CR2: 0000564574333048 CR3: 000000016e0d4000 CR4: 00000000001006e0
[   96.758941] Call Trace:
[   96.759023]  intel_dp_set_sink_rates+0xd/0x70 [i915]
[   96.759104]  intel_dp_get_dpcd.part.33+0x27/0xd0 [i915]
[   96.759188]  intel_dp_detect+0x1af/0x4d0 [i915]
[   96.759205]  drm_helper_probe_single_connector_modes+0xd2/0x6d0
[   96.759217]  ? __mutex_lock+0x8c/0x9c0
[   96.759223]  ? __mutex_lock+0x425/0x9c0
[   96.759253]  drm_mode_getconnector+0x157/0x3a0
[   96.759277]  ? drm_mode_connector_property_set_ioctl+0x60/0x60
[   96.759286]  drm_ioctl_kernel+0x7c/0xf0
[   96.759300]  drm_ioctl+0x2e6/0x3a0
[   96.759311]  ? drm_mode_connector_property_set_ioctl+0x60/0x60
[   96.759343]  do_vfs_ioctl+0xa0/0x6c0
[   96.759351]  ? lock_acquire+0xa6/0x210
[   96.759370]  ksys_ioctl+0x35/0x60
[   96.759382]  __x64_sys_ioctl+0x11/0x20
[   96.759389]  do_syscall_64+0x55/0x190
[   96.759398]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   96.759403] RIP: 0033:0x7fb4741d15d7
[   96.759409] RSP: 002b:00007ffdaf36fee8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   96.759419] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb4741d15d7
[   96.759424] RDX: 00007ffdaf36ff20 RSI: 00000000c05064a7 RDI: 0000000000000003
[   96.759429] RBP: 00007ffdaf36ff20 R08: 000056457430bf50 R09: 00007fb4744a6c40
[   96.759434] R10: 0000000000000051 R11: 0000000000000246 R12: 00000000c05064a7
[   96.759439] R13: 0000000000000003 R14: 0000000000000003 R15: 00007ffdaf36ff20
[   96.759464] Code: 00 74 0b 40 80 ff 1e b8 10 5c 0c 00 75 0d f3 c3 40 80 ff 06 b8 d0 78 02 00 74 f3 40 0f b6 f7 48 c7 c7 b8 9a 0c aa e8 a5 bb aa ff <0f> 0b b8 d0 78 02 00 c3 b8 b0 1e 04 00 c3 0f 1f 80 00 00 00 00 
[   96.759751] irq event stamp: 50602
[   96.759758] hardirqs last  enabled at (50601): [<ffffffffa90fbf06>] console_unlock+0x426/0x640
[   96.759766] hardirqs last disabled at (50602): [<ffffffffa9a0111c>] error_entry+0x7c/0x100
[   96.759772] softirqs last  enabled at (50486): [<ffffffffa9c0032b>] __do_softirq+0x32b/0x4e1
[   96.759779] softirqs last disabled at (50477): [<ffffffffa908f594>] irq_exit+0xa4/0xb0
[   96.759786] WARNING: CPU: 1 PID: 1256 at drivers/gpu/drm/drm_dp_helper.c:159 drm_dp_bw_code_to_link_rate+0x3b/0x50
[   96.759791] ---[ end trace 2a6947b6c39b6c2b ]---
Comment 1 Martin Peres 2018-06-15 08:32:38 UTC
Not reproduced this that run (37 new runs happened and about 2 months). Closing now :)
Comment 2 Jani Saarinen 2018-06-19 14:25:51 UTC
Closing, thanks.
Comment 3 Martin Peres 2018-07-20 08:17:31 UTC
It's back, and it spammed one fast feedback run (tens of tests):

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_4451_74/fi-bsw-n3050/igt@gem_exec_suspend@basic-s3.html

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_4451_74/fi-bsw-n3050/igt@kms_cursor_legacy@basic-flip-before-cursor-varying-size.html

...

[  449.449754] WARNING: CPU: 0 PID: 25 at drivers/gpu/drm/drm_dp_helper.c:173 drm_dp_bw_code_to_link_rate+0x3b/0x50
[  449.449764] ---[ end trace 6bd9f326a24d40c7 ]---
[  449.672376] ------------[ cut here ]------------
[  449.672389] unknown DP link BW code 11, using 162000
[  449.672442] WARNING: CPU: 0 PID: 25 at drivers/gpu/drm/drm_dp_helper.c:173 drm_dp_bw_code_to_link_rate+0x3b/0x50
[  449.672454] Modules linked in: vgem btusb btrtl btbcm btintel bluetooth snd_hda_codec_hdmi ecdh_generic snd_hda_codec_realtek snd_hda_codec_generic i915 intel_powerclamp coretemp snd_hda_intel crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_hda_codec snd_hwdep snd_hda_core snd_pcm r8169 mii lpc_ich prime_numbers pinctrl_cherryview
[  449.672758] CPU: 0 PID: 25 Comm: kworker/0:1 Tainted: G     U  W         4.18.0-rc3-g7ae7763aa2be-repeat_6+ #1
[  449.672770] Hardware name:  /NUC5CPYB, BIOS PYBSWCEL.86A.0058.2016.1102.1842 11/02/2016
[  449.672927] Workqueue: events i915_hpd_poll_init_work [i915]
[  449.672954] RIP: 0010:drm_dp_bw_code_to_link_rate+0x3b/0x50
[  449.672965] Code: 74 0b 40 80 ff 1e b8 10 5c 0c 00 75 0d f3 c3 40 80 ff 06 b8 d0 78 02 00 74 f3 40 0f b6 f7 48 c7 c7 30 a1 0c 98 e8 15 52 aa ff <0f> 0b b8 d0 78 02 00 c3 b8 b0 1e 04 00 c3 0f 1f 80 00 00 00 00 48 
[  449.673575] RSP: 0018:ffffb219c00ebc98 EFLAGS: 00010282
[  449.673597] RAX: 0000000000000000 RBX: ffff920c250c8110 RCX: 0000000000000001
[  449.673608] RDX: 0000000080000001 RSI: ffffffff98085066 RDI: 00000000ffffffff
[  449.673618] RBP: ffff920c250c8110 R08: 00000000a8b3493f R09: 0000000000000000
[  449.673630] R10: 0000000000000000 R11: 0000000000000000 R12: ffff920c24200000
[  449.673641] R13: ffff920c24486678 R14: 0000000000000001 R15: 0000000000000000
[  449.673652] FS:  0000000000000000(0000) GS:ffff920c3fc00000(0000) knlGS:0000000000000000
[  449.673664] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  449.673675] CR2: 00007f3878168000 CR3: 0000000163c80000 CR4: 00000000001006f0
[  449.673685] Call Trace:
[  449.673838]  intel_dp_set_sink_rates+0xd/0x70 [i915]
[  449.673990]  intel_dp_get_dpcd.part.33+0x27/0xd0 [i915]
[  449.674148]  intel_dp_detect+0x1af/0x4d0 [i915]
[  449.674184]  drm_helper_probe_detect_ctx+0x67/0xd0
[  449.674238]  drm_helper_hpd_irq_event+0xa5/0x120
[  449.674408]  i915_hpd_poll_init_work+0xc6/0x100 [i915]
[  449.674443]  process_one_work+0x248/0x6c0
[  449.674486]  worker_thread+0x1fb/0x380
[  449.674512]  ? process_one_work+0x6c0/0x6c0
[  449.674527]  kthread+0x119/0x130
[  449.674543]  ? kthread_flush_work_fn+0x10/0x10
[  449.674571]  ret_from_fork+0x3a/0x50
[  449.674630] irq event stamp: 591836
[  449.674646] hardirqs last  enabled at (591835): [<ffffffff970fc74c>] console_unlock+0x3fc/0x600
[  449.674659] hardirqs last disabled at (591836): [<ffffffff97a0111c>] error_entry+0x7c/0x100
[  449.674672] softirqs last  enabled at (591704): [<ffffffff97c0034f>] __do_softirq+0x34f/0x505
[  449.674687] softirqs last disabled at (591695): [<ffffffff970904d9>] irq_exit+0xa9/0xc0
[  449.674703] WARNING: CPU: 0 PID: 25 at drivers/gpu/drm/drm_dp_helper.c:173 drm_dp_bw_code_to_link_rate+0x3b/0x50
[  449.674715] ---[ end trace 6bd9f326a24d40c8 ]---


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