[Bug 101178] [IGT] [KBL/IVB] kms_frontbuffer_tracking some subtest fail Test assertion failure

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101178

--- Comment #12 from Armando Antonio <armando.antoniox.mora.reos at intel.com> ---
Hi, I tried to reproduce the following test case on KBL with latest
configuration and this is what I found.

=================================
Test list
=================================
igt at kms_frontbuffer_tracking@fbc-1p-offscren-pri-shrfb-draw-blt
igt at kms_frontbuffer_tracking@fbc-2p-primscrn-pri-shrfb-draw-mmap-wc


Results:

this test case is working well now,
igt at kms_frontbuffer_tracking@fbc-1p-offscren-pri-shrfb-draw-blt

this igt at kms_frontbuffer_tracking@fbc-2p-primscrn-pri-shrfb-draw-mmap-wc is
failing with the following assert.

(kms_frontbuffer_tracking:2427) igt-debugfs-DEBUG: CRC mismatch at index 0:
0x941b2438 != 0xd15675fd
(kms_frontbuffer_tracking:2427) igt-debugfs-CRITICAL: Test assertion failure
function igt_assert_crc_equal, file igt_debugfs.c:325:
(kms_frontbuffer_tracking:2427) igt-debugfs-CRITICAL: Failed assertion:
!mismatch
(kms_frontbuffer_tracking:2427) igt-core-INFO: Stack trace:
(kms_frontbuffer_tracking:2427) igt-core-INFO:   #0 [__igt_fail_assert+0x101]
(kms_frontbuffer_tracking:2427) igt-core-INFO:   #1 [igt_assert_crc_equal+0x5d]
(kms_frontbuffer_tracking:2427) igt-core-INFO:   #2
[do_crc_assertions.part.34+0x58]
(kms_frontbuffer_tracking:2427) igt-core-INFO:   #3 [__do_assertions+0x1f9]
(kms_frontbuffer_tracking:2427) igt-core-INFO:   #4 [draw_subtest+0x10d]
(kms_frontbuffer_tracking:2427) igt-core-INFO:   #5 [main+0x112d]
(kms_frontbuffer_tracking:2427) igt-core-INFO:   #6 [__libc_start_main+0xf1]
(kms_frontbuffer_tracking:2427) igt-core-INFO:   #7 [_start+0x29]
(kms_frontbuffer_tracking:2427) igt-core-INFO:   #8 [<unknown>+0x29]
****  END  ****
Subtest fbc-2p-primscrn-pri-shrfb-draw-mmap-wc: FAIL (0.784s)

new dmesg attached

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