[Bug 101664] New: [IGT][BDW] kms_universal_plane at universal-plane-pipe-a-functional dmesg-warn due to assert

Fri Jun 30 13:10:46 UTC 2017

https://bugs.freedesktop.org/show_bug.cgi?id=101664

            Bug ID: 101664
           Summary: [IGT][BDW]
                    kms_universal_plane at universal-plane-pipe-a-functional
                    dmesg-warn due to assert
           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: marta.lofstedt at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

kms_universal_plane --run-subtest universal-plane-pipe-A-functional

BDW NUCi5 

I suspect that thsi issue has been around for a long time, but last seen on
drm-tip:
"commit 1da9a6d8d2402de8798b36d75bdd7d8b49728a5e
Author: Rodrigo Vivi <rodrigo.vivi at intel.com>
Date:   Thu Jun 29 13:17:09 2017 -0700

    drm-tip: 2017y-06m-29d-20h-16m-45s UTC integration manifest"

dmesg-warn due to the following assert:

[ 2888.641550] plane A assertion failure (expected on, current off)
[ 2888.641596] ------------[ cut here ]------------
[ 2888.641682] WARNING: CPU: 3 PID: 4356 at
drivers/gpu/drm/i915/intel_display.c:1225 assert_plane+0xb5/0xc0 [i915]
[ 2888.641683] Modules linked in: rfcomm bnep arc4 iwlmvm mac80211 binfmt_misc
nls_iso8859_1 intel_rapl x86_pkg_temp_thermal intel_powerclamp iwlwifi coretemp
crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel aes_x86_64
crypto_simd cryptd glue_helper intel_cstate cfg80211 intel_rapl_perf
snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel
snd_hda_codec snd_soc_ssm4567 btusb snd_soc_rt5640 snd_hwdep btrtl shpchp btbcm
snd_soc_rl6231 lpc_ich btintel ir_rc6_decoder input_leds snd_soc_core
snd_hda_core bluetooth snd_compress snd_pcm rc_rc6_mce snd_seq ir_lirc_codec
mei_me ecdh_generic lirc_dev mei snd_timer nuvoton_cir snd_seq_device rc_core
acpi_als snd elan_i2c dw_dmac kfifo_buf snd_soc_sst_acpi dw_dmac_core 8250_dw
snd_soc_sst_match soundcore mac_hid industrialio
[ 2888.641755]  spi_pxa2xx_platform acpi_pad parport_pc ppdev lp parport
ip_tables x_tables autofs4 i915 hid_generic usbhid i2c_algo_bit drm_kms_helper
syscopyarea sysfillrect sysimgblt fb_sys_fops drm e1000e ptp ahci libahci
pps_core sdhci_acpi video sdhci i2c_hid hid
[ 2888.641789] CPU: 3 PID: 4356 Comm: kms_universal_p Tainted: G        W      
4.12.0-rc7-next-20170630 #2
[ 2888.641791] Hardware name:                  /NUC5i5RYB, BIOS
RYBDWi35.86A.0249.2015.0529.1640 05/29/2015
[ 2888.641794] task: ffff90c00a46dc00 task.stack: ffff9f83c1c54000
[ 2888.641868] RIP: 0010:assert_plane+0xb5/0xc0 [i915]
[ 2888.641870] RSP: 0018:ffff9f83c1c57b18 EFLAGS: 00010286
[ 2888.641874] RAX: 0000000000000034 RBX: 0000000000000000 RCX:
0000000000000000
[ 2888.641876] RDX: 0000000000000000 RSI: ffff90c01ed8dc78 RDI:
ffff90c01ed8dc78
[ 2888.641878] RBP: ffff9f83c1c57b28 R08: 0000000000000001 R09:
0000000000000aac
[ 2888.641880] R10: ffff90c013f9b600 R11: 0000000000000aac R12:
0000000000000001
[ 2888.641881] R13: 0000000000000000 R14: 0000000000000000 R15:
ffff9f83c1c57bb0
[ 2888.641885] FS:  00007f02c23d2a40(0000) GS:ffff90c01ed80000(0000)
knlGS:0000000000000000
[ 2888.641887] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2888.641889] CR2: 00007f434db88000 CR3: 000000020b92c000 CR4:
00000000003406e0
[ 2888.641892] Call Trace:
[ 2888.641968]  hsw_disable_ips+0x38/0x100 [i915]
[ 2888.642031]  intel_crtc_set_crc_source+0x197/0x220 [i915]
[ 2888.642060]  crtc_crc_open+0x54/0x1f0 [drm]
[ 2888.642067]  ? _cond_resched+0x1a/0x50
[ 2888.642073]  ? kmem_cache_alloc_trace+0x181/0x190
[ 2888.642080]  full_proxy_open+0xff/0x1c0
[ 2888.642085]  do_dentry_open+0x1fc/0x300
[ 2888.642090]  ? full_proxy_release+0x90/0x90
[ 2888.642095]  vfs_open+0x4e/0x80
[ 2888.642100]  path_openat+0x614/0x14b0
[ 2888.642106]  ? copy_termios+0x71/0x80
[ 2888.642110]  ? _copy_to_user+0x2a/0x40
[ 2888.642116]  ? __check_object_size+0xb3/0x190
[ 2888.642119]  ? _copy_from_user+0x36/0x70
[ 2888.642124]  do_filp_open+0x99/0x110
[ 2888.642129]  ? __check_object_size+0xb3/0x190
[ 2888.642135]  ? __alloc_fd+0x46/0x170
[ 2888.642140]  do_sys_open+0x130/0x220
[ 2888.642145]  ? do_sys_open+0x130/0x220
[ 2888.642151]  SyS_openat+0x14/0x20
[ 2888.642155]  entry_SYSCALL_64_fastpath+0x1e/0xa9
[ 2888.642158] RIP: 0033:0x7f02c08e075a
[ 2888.642160] RSP: 002b:00007ffc253d5060 EFLAGS: 00000246 ORIG_RAX:
0000000000000101
[ 2888.642164] RAX: ffffffffffffffda RBX: 000000094d3612c0 RCX:
00007f02c08e075a
[ 2888.642166] RDX: 0000000000000000 RSI: 00007ffc253d5120 RDI:
0000000000000005
[ 2888.642167] RBP: 00007f02c0ba6400 R08: 0000000000000000 R09:
000000000000000f
[ 2888.642169] R10: 0000000000000000 R11: 0000000000000246 R12:
0000000000000000
[ 2888.642171] R13: 00000000000001e0 R14: 00007ffc253d5b28 R15:
000000094d35d9c0
[ 2888.642174] Code: c6 7b b6 5f c0 85 c0 48 c7 c2 7e b6 5f c0 48 89 f1 48 c7
c7 70 dd 60 c0 48 0f 49 ca 45 84 e4 48 0f 45 d6 8d 73 41 e8 5c 08 5b d0 <0f> ff
eb 89 0f 1f 80 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 41 
[ 2888.642247] ---[ end trace c7632b8a39606034 ]---

Above assert in then followed by similar assert, but with hsw_enable_ips
instead of hsw_disable_ips.

The issue happens in the "functional_test_pipe" part of the tests. The asserts
are fired during: igt_pipe_crc_collect_crc(...)
During the following steps of the test:
"Step 5: Universal API's, disable primary plane (CRC 5)"
"Step 14: Universal API, set primary completely offscreen (CRC 9)"
"Step 15: Explicitly disable primary after it's already been implicitly
disabled (CRC 10)."                                                             

Note that the identical test for pipe-B and pipe-C that also pass, but with out
firing the assert and that it only appears for BDW out of many other tested HW
in Intel Espoo lab.

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