linux-kernel - [lkp] [drm/i915] ed4a6a7ca8: WARNING: CPU: 0 PID: 650 at drivers/gpu/drm/i915/intel_drv.h:1470 gen6

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Date:	Thu, 10 Mar 2016 14:04:51 +0800
From:	kernel test robot <xiaolong.ye@...el.com>
To:	Matt Roper <matthew.d.roper@...el.com>
Cc:	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: [lkp] [drm/i915] ed4a6a7ca8: WARNING: CPU: 0 PID: 650 at
 drivers/gpu/drm/i915/intel_drv.h:1470 gen6_write32+0x131/0x1b0 [i915]()

FYI, we noticed the below changes on

https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
commit ed4a6a7ca853253f9b86f3005d76345482a71283 ("drm/i915: Add two-stage ILK-style watermark programming (v11)")


<5>[   17.105319] Key type id_resolver registered
<5>[   17.105566] Key type id_legacy registered
<4>[   19.890693] ------------[ cut here ]------------
<4>[   19.890985] WARNING: CPU: 0 PID: 650 at drivers/gpu/drm/i915/intel_drv.h:1470 gen6_write32+0x131/0x1b0 [i915]()
<4>[   19.891606] Device suspended during HW access
<4>[   19.891843] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver sg sd_mod snd_hda_codec_hdmi x86_pkg_temp_thermal coretemp kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel ahci aesni_intel snd_hda_codec_realtek libahci snd_hda_codec_generic ppdev lrw firewire_ohci gf128mul glue_helper ablk_helper cryptd serio_raw pcspkr libata firewire_core crc_itu_t snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep i915 snd_pcm snd_timer video drm_kms_helper syscopyarea snd sysfillrect sysimgblt shpchp soundcore fb_sys_fops drm parport_pc parport nuvoton_cir rc_core
<4>[   19.895094] CPU: 0 PID: 650 Comm: pm_rpm Not tainted 4.5.0-rc3-00396-ged4a6a7 #1
<4>[   19.895476] Hardware name:                  /DH67GD, BIOS BLH6710H.86A.0132.2011.1007.1505 10/07/2011
<4>[   19.895947]  0000000000000000 ffff8800bceeb938 ffffffff8141e3aa ffff8800bceeb980
<4>[   19.896364]  ffffffffa026c660 ffff8800bceeb970 ffffffff81078ec6 0000000000070001
<4>[   19.896777]  0000000000045110 ffff8800bdae0000 0000000000000000 0000000016304d06
<4>[   19.897194] Call Trace:
<4>[   19.897336]  [<ffffffff8141e3aa>] dump_stack+0x63/0x89
<4>[   19.897606]  [<ffffffff81078ec6>] warn_slowpath_common+0x86/0xc0
<4>[   19.897917]  [<ffffffff81078f4c>] warn_slowpath_fmt+0x4c/0x50
<4>[   19.898216]  [<ffffffff810a216d>] ? ttwu_do_activate+0x5d/0x70
<4>[   19.898592]  [<ffffffffa01dd661>] gen6_write32+0x131/0x1b0 [i915]
<4>[   19.898918]  [<ffffffffa0190e3d>] _ilk_disable_lp_wm+0x9d/0xe0 [i915]
<4>[   19.899263]  [<ffffffffa0196584>] ilk_program_watermarks+0x4f4/0x9b0 [i915]
<4>[   19.899633]  [<ffffffffa0196b53>] ilk_optimize_watermarks+0x113/0x130 [i915]
<4>[   19.900019]  [<ffffffffa0201663>] intel_atomic_commit+0x8b3/0xd60 [i915]
<4>[   19.900384]  [<ffffffffa009a43d>] ? drm_atomic_set_crtc_for_connector+0x3d/0xf0 [drm]
<4>[   19.900803]  [<ffffffffa009aea7>] drm_atomic_commit+0x37/0x60 [drm]
<4>[   19.901132]  [<ffffffffa013f637>] drm_atomic_helper_set_config+0x77/0xb0 [drm_kms_helper]
<4>[   19.901560]  [<ffffffffa008a7f2>] drm_mode_set_config_internal+0x62/0x100 [drm]
<4>[   19.901950]  [<ffffffffa008edd9>] drm_mode_setcrtc+0x189/0x4f0 [drm]
<4>[   19.902285]  [<ffffffffa0080a62>] drm_ioctl+0x142/0x590 [drm]
<4>[   19.902595]  [<ffffffffa008ec50>] ? drm_mode_setplane+0x1b0/0x1b0 [drm]
<4>[   19.902943]  [<ffffffff81204eef>] do_vfs_ioctl+0x8f/0x670
<4>[   19.903224]  [<ffffffff813acba3>] ? security_file_ioctl+0x43/0x60
<4>[   19.903543]  [<ffffffff81205549>] SyS_ioctl+0x79/0x90
<4>[   19.903807]  [<ffffffff818dad2e>] entry_SYSCALL_64_fastpath+0x12/0x6d
<4>[   19.904156] ---[ end trace 2fe52dffb2d62414 ]---
<4>[   19.904156] ---[ end trace 2fe52dffb2d62414 ]---


To reproduce:

        git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
        cd lkp-tests
        bin/lkp install job.yaml  # job file is attached in this email
        bin/lkp run     job.yaml



Thanks,
Xiaolong Ye

View attachment "config-4.5.0-rc3-00396-ged4a6a7" of type "text/plain" (145438 bytes)

Download attachment "kmsg.xz" of type "application/octet-stream" (20424 bytes)

View attachment "job.yaml" of type "text/plain" (2823 bytes)

View attachment "reproduce" of type "text/plain" (164 bytes)