[Bug 103166] [CI] igt at kms_plane-*@* - Failed CRC mismatch

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103166

--- Comment #39 from Daniel Vetter <daniel at ffwll.ch> ---
We need to close this one, this bug has become a mess:

- no more fifo underruns it seems

At least 2 new bugs:

1. for igt at kms_plane@pixel-format-pipe-a-planes (also b/c ofc) on icl-u3:

Crash signature is:

Testing format NV12 (0x3231564e) on A.2
Stack trace:
  #0 ../lib/igt_core.c:1474 __igt_fail_assert()
  #1 ../lib/igt_debugfs.c:420 igt_assert_crc_equal()
  #2 ../tests/kms_plane.c:550 test_format_plane()
  #3 ../tests/kms_plane.c:582 test_pixel_formats()
  #4 ../tests/kms_plane.c:597 run_tests_for_pipe_plane()
  #5 ../tests/kms_plane.c:652 __real_main637()
  #6 ../tests/kms_plane.c:637 main()
  #7 ../csu/libc-start.c:344 __libc_start_main()
  #8 [_start+0x2a]
Subtest pixel-format-pipe-A-planes: FAIL (547.114s)
Test requirement not met in function run_tests_for_pipe_plane, file
../tests/kms_plane.c:593:
Test requirement: !(pipe >= data->display.n_pipes)

A.2 can also be B.2 for b-planes and C.2 for c-planes


2. bug: igt at kms_plane_multiple@atomic * on icl-u3: No idea yet what's going on
there.

3. All the other platforms: Not sure it's a good idea to smash them all into
one place. We need to at least separate the bugs where we also have a fifo
underrun from crc mistmatches for other reasons. Since my igt patch

commit 4d0d81a2176227a7432762ae095ba386f3c8aba0
Author: Daniel Vetter <daniel.vetter at ffwll.ch>
Date:   Tue Feb 19 10:11:06 2019 +0100

    lib/crc: Reset fifo underrun reporting for every crc capture

we should be able to tell these two cases apart with 100% accuracy.

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