[Bug 70570] New: [BYT]igt/kms_flip/wf_vblank-vs-modeset cause WARNING: CPU: 0 PID: 3716 at drivers/gpu/drm/i915/intel_dp.c:2653 intel_dp_link_down+0x5b/0x18d [i915]()

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=70570

          Priority: medium
            Bug ID: 70570
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [BYT]igt/kms_flip/wf_vblank-vs-modeset cause WARNING:
                    CPU: 0 PID: 3716 at
                    drivers/gpu/drm/i915/intel_dp.c:2653
                    intel_dp_link_down+0x5b/0x18d [i915]()
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: jinxianx.guo at intel.com
          Hardware: All
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 87788
  --> https://bugs.freedesktop.org/attachment.cgi?id=87788&action=edit
dmesg

System Environment:
--------------------------
Platform: BayTrail
kernel   (drm-intel-next-queued)4cdb83ec9a72f741c75e20c8e412c505fc037f5f


Bug detailed description:
-----------------------------
Call Trace while running test igt/kms_flip/wf_vblank-vs-modeset

[  352.383853] WARNING: CPU: 0 PID: 3716 at
drivers/gpu/drm/i915/intel_dp.c:2653 intel_dp_link_down+0x5b/0x18d [i915]()
[  352.383901] Modules linked in: ip6table_filter ip6_tables iptable_filter
ip_tables ebtable_nat ebtables x_tables bnep bluetooth rfkill ib_iser rdma_cm
ib_addr iw_cm ib_cm ib_sa ib_mad ib_core ipv6 snd_hda_codec_realtek
snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm pcspkr
snd_page_alloc serio_raw snd_timer snd soundcore battery ac acpi_cpufreq
freq_table kvm_intel kvm uinput i915 drm_kms_helper drm video button dm_mirror
dm_region_hash dm_log dm_mod
[  352.383905] CPU: 0 PID: 3716 Comm: kms_flip Not tainted
3.12.0-rc3_drm-intel-next-queued_4cdb83_debug_20131015_+ #941
[  352.383908] Hardware name: Intel Corp. VALLEYVIEW B3 PLATFORM/NOTEBOOK, BIOS
BBAYCRB1.86C.0061.R22.1309171818 BBAY_IA32_R_V6122-MCU312 09/17/2013
[  352.383918]  00000000 00000000 f0dfda20 c1738317 00000000 f0dfda38 c1030b48
f8df3ba2
[  352.383927]  f71f4000 f4f1b878 f55a7800 f0dfda48 c1030b73 00000009 00000000
f0dfda68
[  352.383936]  f8df3ba2 f72b0000 00000002 300c0004 f4f1b878 00000001 00000006
f0dfda94

[  352.383938] Call Trace:
[  352.383946]  [<c1738317>] dump_stack+0x41/0x52
[  352.383954]  [<c1030b48>] warn_slowpath_common+0x66/0x7d
[  352.383988]  [<f8df3ba2>] ? intel_dp_link_down+0x5b/0x18d [i915]
[  352.383993]  [<c1030b73>] warn_slowpath_null+0x14/0x18
[  352.384027]  [<f8df3ba2>] intel_dp_link_down+0x5b/0x18d [i915]
[  352.384063]  [<f8df6945>] intel_dp_complete_link_train+0xd4/0x22e [i915]
[  352.384113]  [<f8df6b1b>] intel_enable_dp+0x68/0x73 [i915]
[  352.384148]  [<f8df6c34>] vlv_pre_enable_dp+0xf3/0x107 [i915]
[  352.384181]  [<f8de6031>] valleyview_crtc_enable+0x251/0x30f [i915]
[  352.384215]  [<f8de844e>] __intel_set_mode+0xe35/0xf1f [i915]
[  352.384221]  [<c106b6cf>] ? vprintk_emit+0x426/0x467
[  352.384227]  [<c107e69f>] ? trace_hardirqs_on_caller+0x127/0x17b
[  352.384260]  [<f8de9c6d>] intel_set_mode+0x17/0x2f [i915]
[  352.384294]  [<f8dea1ee>] intel_crtc_set_config+0x569/0x729 [i915]
[  352.384298]  [<c107e69f>] ? trace_hardirqs_on_caller+0x127/0x17b
[  352.384322]  [<f8cbcc89>] drm_mode_set_config_internal+0x3e/0x95 [drm]
[  352.384330]  [<f8d0142e>] drm_fb_helper_set_par+0x51/0x8d [drm_kms_helper]
[  352.384336]  [<c1319e09>] fb_set_var+0x29b/0x393
[  352.384343]  [<c132340a>] fbcon_blank+0x89/0x2a7
[  352.384350]  [<c136dbc2>] do_unblank_screen+0xe8/0x15c
[  352.384354]  [<c1366975>] vt_ioctl+0x4c1/0xedf
[  352.384359]  [<c13664b4>] ? complete_change_console+0xb5/0xb5
[  352.384363]  [<c135ecfc>] tty_ioctl+0x896/0x8e2
[  352.384368]  [<c135e466>] ? no_tty+0x21/0x21
[  352.384373]  [<c10fdd7c>] vfs_ioctl+0x20/0x2a
[  352.384377]  [<c10fe752>] do_vfs_ioctl+0x424/0x467
[  352.384382]  [<c107e69f>] ? trace_hardirqs_on_caller+0x127/0x17b
[  352.384386]  [<c107e6fe>] ? trace_hardirqs_on+0xb/0xd
[  352.384390]  [<c10f90ac>] ? final_putname+0x32/0x35
[  352.384394]  [<c10f90ac>] ? final_putname+0x32/0x35
[  352.384398]  [<c10f9212>] ? putname+0x23/0x2c
[  352.384402]  [<c10f0550>] ? do_sys_open+0x1b2/0x1bc
[  352.384407]  [<c10fe7e1>] SyS_ioctl+0x4c/0x73
[  352.384412]  [<c174439a>] sysenter_do_call+0x12/0x32


Reproduce steps:
----------------------------
1. ./mks_flip --run-subtest wf_vblank-vs-modeset

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are on the CC list for the bug.
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20131017/a8682687/attachment-0001.html>