FYI, we noticed the below changes on

git://anongit.freedesktop.org/drm-intel for-linux-next
commit 852eb00dc44ea2b8896e2fa27c6a36a1f697ba5a ("drm/i915: Try to make sure cxsr is disabled around plane enable/disable")


==> /tmp/stderr <==
mount: special devic
[   32.686583] ------------[ cut here ]------------
e /dev/disk/by-i
[   32.692612] WARNING: CPU: 0 PID: 560 at drivers/gpu/drm/i915/i915_gem.c:5350 i915_gem_track_fb+0x14a/0x160 [i915]()
d/ata-INTEL_SSDS
[   32.707573] WARN_ON(!(old->frontbuffer_bits & frontbuffer_bits))C2CW120A3_CVCV25
[   32.715749] Modules linked in:2505YF120BGN-par rpcsec_gss_krb5t2 does not exis auth_rpcgss nfsv4t
The file /dev dns_resolver snd_hda_codec_hdmi/disk/by-id/ata- x86_pkg_temp_thermalINTEL_SSDSC2CW12 coretemp0A3_CVCV252505YF kvm_intel kvm120BGN-part2 doe crct10dif_pclmul crc32_pclmuls not exist and  i915 crc32c_intelno size was spec snd_hda_intel ghash_clmulni_intelified.
mount: s aesni_intel lrwpecial device /d gf128mul glue_helperev/disk/by-id/at ablk_helper cryptda-INTEL_SSDSC2CW snd_hda_controller ppdev120A3_CVCV252505 snd_hda_codecYF120BGN-part2 d snd_hda_core snd_hwdepoes not exist
==> /tmp/stdout serio_raw pcspkr <==
PATH=/usr/ shpchp microcodelocal/sbin:/usr/ snd_timerlocal/bin:/usr/s i2c_i801 sndbin:/usr/bin:/sb soundcore drmin:/bin:/lkp/lkp winbond_cir rc_core/src/bin
/lkp/l i2c_hid parport_pckp/src/bin/run-l sdhci_acpikp
RESULT_ROOT= parport dw_dmac/result/piglit/i video dw_dmac_coregt-057/lkp-bdw01 sdhci/debian-x86_64-2 mmc_core i2c_designware_platform015-02-07.cgz/x8 i2c_designware_core6_64-rhel/gcc-4. spi_pxa2xx_platform acpi_pad9/852eb00dc44ea2
b8896e2fa27c6a36
[   32.827234] CPU: 0 PID: 560 Comm: kms_flip Not tainted 4.1.0-rc6-01164-g852eb00 #1
a1f697ba5a/0
jo
[   32.837418] Hardware name: Intel Corporation Broadwell Client platform/WhiteTip Mountain 1, BIOS BDW-E1R1.86C.0120.R00.1504020241 04/02/2015
b=/lkp/scheduled
[   32.837768] systemd-journald[118]: Compressed data object 585 -> 428
[   32.862000]  ffffffffa0474678/lkp-bdw01/bisec ffff88007abcfa88 ffffffff818e4f79t_piglit-igt-057 ffff88014ec12378
-debian-x86_64-2
[   32.873613]  ffff88007abcfad8015-02-07.cgz-x8 ffff88007abcfac8 ffffffff8107672a6_64-rhel-852eb0 ffff88007abcfaf8
0dc44ea2b8896e2f
[   32.886767]  0000000000000001a27c6a36a1f697ba 0000000000000000 ffff88007aab42405a-20150707-2412 ffff88007b3c9800

run-job /lkp/sc
[   32.904277]  [<ffffffff818e4f79>] dump_stack+0x4c/0x65
heduled/lkp-bdw0
[   32.911670]  [<ffffffff8107672a>] warn_slowpath_common+0x8a/0xc0
1/bisect_piglit-
[   32.920059]  [<ffffffff810767a6>] warn_slowpath_fmt+0x46/0x50
igt-057-debian-x
[   32.928153]  [<ffffffffa03d20ba>] i915_gem_track_fb+0x14a/0x160 [i915]
86_64-2015-02-07
[   32.937119]  [<ffffffffa0414cb8>] intel_pre_plane_update+0x98/0x180 [i915]
.cgz-x86_64-rhel
[   32.946480]  [<ffffffffa041525d>] __intel_set_mode+0xcd/0x920 [i915]
-852eb00dc44ea2b
[   32.955260]  [<ffffffffa041c3a0>] intel_crtc_set_config+0x420/0x5a0 [i915]
8896e2fa27c6a36a
[   32.964608]  [<ffffffff818ea989>] ? mutex_lock+0x29/0x50
1f697ba5a-201507
[   32.972213]  [<ffffffffa0173346>] drm_mode_set_config_internal+0x66/0x100 [drm]
07-24127-afdry6-
[   32.982065]  [<ffffffffa0177539>] drm_mode_setcrtc+0x189/0x540 [drm]
0.yaml
wget --l
[   32.990836]  [<ffffffffa0167936>] drm_ioctl+0x196/0x680 [drm]
ocal-encoding=UT
[   32.998919]  [<ffffffff812016d8>] do_vfs_ioctl+0x308/0x540
F-8 http://inn:8
[   33.006661]  [<ffffffff813ad047>] ? file_has_perm+0x87/0xa0
0/~lkp/cgi-bin/l
[   33.014590]  [<ffffffff811ecadc>] ? vfs_write+0x14c/0x1b0
kp-jobfile-appen
[   33.022280]  [<ffffffff81201991>] SyS_ioctl+0x81/0xa0
d-var?job_file=/
[   33.029543]  [<ffffffff81014fc4>] ? sys_rt_sigreturn+0xb4/0xc0
lkp/scheduled/lk
[   33.037764]  [<ffffffff818ed36e>] system_call_fastpath+0x12/0x71
p-bdw01/bisect_p
[   33.046147] ---[ end trace 6c029ac8c5f4ef39 ]---
iglit-igt-057-de

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,
Ying Huang