Created attachment 105783 [details]
dmesg

It also happens on IVB/HSW.

output:
[root@x-hsw27 tests]# time ./kms_pipe_crc_basic --run-subtest hang-read-crc-pipe-B
IGT-Version: 1.8-gab5f7ea (x86_64) (Linux: 3.18.0-rc2_drm-intel-fixes_7809a6_20141031+ x86_64)
hang-read-crc-pipe-B: Testing connector VGA-1 using pipe B
Subtest hang-read-crc-pipe-B: TIMEOUT (11.068s)

ivb/hsw and bsw are completely different wrt pipe CRC. so let's restrict this to bsw and if there's still an issue on ibv/hsw please file a new bug report for that.

(In reply to Daniel Vetter from comment #3)
> ivb/hsw and bsw are completely different wrt pipe CRC. so let's restrict
> this to bsw and if there's still an issue on ibv/hsw please file a new bug
> report for that.

Run binary on IVB/HSW, I am unable reproduce this issue, but automation testing, it still report timeout. File bug 88080 to track IVB/HSW.

The timeout behaviour of the tests has been changed in commit cff102e (lib: use test failure status for igt_set_timeout). Please re-test with this commit.

Test it on the latest nightly kernel and latest igt (e1ce5ea),this problem does not exist, but it fails.

output:
------------------
root@x-bsw08:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# time ./kms_pipe_crc_basic --run-subtest hang-read-crc-pipe-C
IGT-Version: 1.10-ge1ce5ea (x86_64) (Linux: 4.0.0_drm-intel-nightly_b9fe35_20150421+ x86_64)
hang-read-crc-pipe-C: Testing connector eDP-1 using pipe C
Timed out
Subtest hang-read-crc-pipe-C failed.
**** DEBUG ****
Test requirement passed: !(pipe >= data->display.n_pipes)
hang-read-crc-pipe-C: Testing connector eDP-1 using pipe C
display: eDP-1: set_pipe(C)
Clearing the fb with color (0.00,1.00,0.00)
igt_create_fb_with_bo_size(width=1920, height=1080, format=0x34325258 [bpp=32], tiling=0x0, size=0
igt_create_fb_with_bo_size(handle=1, pitch=7680)
display: C.0: plane_set_fb(51)
display: commit {
display: }
Timed out
****  END  ****
Subtest hang-read-crc-pipe-C: FAIL (10.891s)

real    0m11.147s
user    0m0.005s
sys     0m0.055s

(In reply to ye.tian from comment #6)
> Test it on the latest nightly kernel and latest igt (e1ce5ea),this problem
> does not exist, but it fails.
> 
> output:
> ------------------
> root@x-bsw08:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# time
> ./kms_pipe_crc_basic --run-subtest hang-read-crc-pipe-C
> IGT-Version: 1.10-ge1ce5ea (x86_64) (Linux:
> 4.0.0_drm-intel-nightly_b9fe35_20150421+ x86_64)
> hang-read-crc-pipe-C: Testing connector eDP-1 using pipe C
> Timed out
> Subtest hang-read-crc-pipe-C failed.
> **** DEBUG ****
> Test requirement passed: !(pipe >= data->display.n_pipes)
> hang-read-crc-pipe-C: Testing connector eDP-1 using pipe C
> display: eDP-1: set_pipe(C)
> Clearing the fb with color (0.00,1.00,0.00)
> igt_create_fb_with_bo_size(width=1920, height=1080, format=0x34325258
> [bpp=32], tiling=0x0, size=0
> igt_create_fb_with_bo_size(handle=1, pitch=7680)
> display: C.0: plane_set_fb(51)
> display: commit {
> display: }
> Timed out
> ****  END  ****
> Subtest hang-read-crc-pipe-C: FAIL (10.891s)
> 
> real    0m11.147s
> user    0m0.005s
> sys     0m0.055s

It may be the same as below bug:
Bug 86767 - [BSW]igt/kms_rotation_crc subcases fail

(In reply to ye.tian from comment #7)
 
> It may be the same as below bug:
> Bug 86767 - [BSW]igt/kms_rotation_crc subcases fail

Yes, it looks like the same issue and since the kms_pipe_crc_basic subtests no longer timeout, this bug can be closed.

Okay, verified it.

Closing old verified.