[Bug 99098] New: WARNING: CPU: 2 PID: 150 at drivers/gpu/drm/i915/intel_dp.c:1062 intel_dp_aux_transfer

Thu Dec 15 14:56:06 UTC 2016

https://bugs.freedesktop.org/show_bug.cgi?id=99098

            Bug ID: 99098
           Summary: WARNING: CPU: 2 PID: 150 at
                    drivers/gpu/drm/i915/intel_dp.c:1062
                    intel_dp_aux_transfer
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: rrs at researchut.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 128486
  --> https://bugs.freedesktop.org/attachment.cgi?id=128486&action=edit
dmesg

* Steps to reproduce the issue. 
   Boot the kernel and the oops are seen in dmesg

* How often does the steps listed above trigger the issue?
  Persistently, on every boot.

-- system architecture: ("uname -m")
-- kernel version: ("uname -r").

rrs at learner:~$ uname -a
Linux learner 4.9.0+ #42 SMP Tue Dec 13 17:30:09 IST 2016 x86_64 GNU/Linux
2016-12-15 / 20:22:52 ♒♒♒  ☺  

-- Linux distribution:

Debian Unstable.

-- Machine or mother board model:

Intel Haswell.

rrs at learner:~$ lspci
00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated
Graphics Controller (rev 0b)
00:03.0 Audio device: Intel Corporation Haswell-ULT HD Audio Controller (rev
0b)
00:14.0 USB controller: Intel Corporation 8 Series USB xHCI HC (rev 04)
00:16.0 Communication controller: Intel Corporation 8 Series HECI #0 (rev 04)
00:1b.0 Audio device: Intel Corporation 8 Series HD Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 4 (rev e4)
00:1d.0 USB controller: Intel Corporation 8 Series USB EHCI #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation 8 Series LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 8 Series SATA Controller 1 [AHCI
mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 8 Series SMBus Controller (rev 04)
01:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe
Wireless Network Adapter
2016-12-15 / 20:23:49 ♒♒♒  ☺  

-- Display connector: (such as HDMI, DP, eDP, ...)
No external display connected.

rrs at learner:~$ sudo cat /sys/class/drm/card*/error 
no error state collected
2016-12-15 / 20:20:07 ♒♒♒  ☺  

Kernel Oops.

[    1.999428] ------------[ cut here ]------------
[    1.999451] WARNING: CPU: 2 PID: 150 at drivers/gpu/drm/i915/intel_dp.c:1062
intel_dp_aux_transfer+0x1ec/0x230 [i915]
[    1.999451] WARN_ON(!msg->buffer != !msg->size)
[    1.999452] Modules linked in:
[    1.999453]  crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel
ahci libahci aesni_intel aes_x86_64 libata lrw gf128mul glue_helper ablk_helper
cryptd i915 i2c_algo_bit xhci_pci psmouse drm_kms_helper xhci_hcd syscopyarea
ehci_pci sysfillrect sysimgblt ehci_hcd fb_sys_fops scsi_mod usbcore drm fan
thermal i2c_hid hid i2c_core video sdhci_acpi sdhci mmc_core gpio_lynxpoint
fjes button
[    1.999470] CPU: 2 PID: 150 Comm: kworker/u16:4 Tainted: G     U  W      
4.9.0+ #42
[    1.999471] Hardware name: LENOVO 20344/INVALID, BIOS 96CN31WW(V1.17)
07/21/2015
[    1.999472] Workqueue: events_unbound async_run_entry_fn
[    1.999473]  0000000000000000 ffffffffa772feb5 ffffc0260195fb30
0000000000000000
[    1.999476]  ffffffffa747505e ffffc0260195fc00 ffffc0260195fb88
0000000000000003
[    1.999478]  00000000fffffffb 00000000ffffffb9 00000000fffffffb
ffffffffa74750df
[    1.999480] Call Trace:
[    1.999482]  [<ffffffffa772feb5>] ? dump_stack+0x7d/0xb8
[    1.999485]  [<ffffffffa747505e>] ? __warn+0xbe/0xe0
[    1.999487]  [<ffffffffa74750df>] ? warn_slowpath_fmt+0x5f/0x80
[    1.999489]  [<ffffffffa74e1930>] ? __hrtimer_init+0x70/0x70
[    1.999510]  [<ffffffffc04a102c>] ? intel_dp_aux_transfer+0x1ec/0x230 [i915]
[    1.999515]  [<ffffffffc03a2c3a>] ? drm_dp_dpcd_access+0x7a/0x120
[drm_kms_helper]
[    1.999520]  [<ffffffffc03a2cf7>] ? drm_dp_dpcd_write+0x17/0x20
[drm_kms_helper]
[    1.999540]  [<ffffffffc049bf5b>] ? intel_dp_start_link_train+0x2cb/0x4c0
[i915]
[    1.999559]  [<ffffffffc049d3e8>] ? intel_dp_check_link_status+0xd8/0x110
[i915]
[    1.999579]  [<ffffffffc04a1d69>] ? intel_dp_detect+0x789/0xb80 [i915]
[    1.999584]  [<ffffffffc03a40e6>] ?
drm_helper_probe_single_connector_modes+0x3f6/0x4e0 [drm_kms_helper]
[    1.999587]  [<ffffffffa79da385>] ? _raw_spin_unlock_irqrestore+0x35/0x40
[    1.999592]  [<ffffffffc03b1fdc>] ? drm_fb_helper_initial_config+0xac/0x450
[drm_kms_helper]
[    1.999614]  [<ffffffffc0493b04>] ? intel_fbdev_initial_config+0x14/0x30
[i915]
[    1.999616]  [<ffffffffa7497dd2>] ? async_run_entry_fn+0x32/0x140
[    1.999617]  [<ffffffffa748ea4b>] ? process_one_work+0x1fb/0x490
[    1.999618]  [<ffffffffa748ed2a>] ? worker_thread+0x4a/0x500
[    1.999620]  [<ffffffffa748ece0>] ? process_one_work+0x490/0x490
[    1.999622]  [<ffffffffa7494e4e>] ? kthread+0xce/0xf0
[    1.999623]  [<ffffffffa7425701>] ? __switch_to+0x2c1/0x6c0
[    1.999625]  [<ffffffffa7494d80>] ? kthread_park+0x60/0x60
[    1.999626]  [<ffffffffa79daa1a>] ? ret_from_fork+0x2a/0x40
[    1.999627] ---[ end trace ab3e43b405e66648 ]---

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