renesas/master bisection: igt-kms-rockchip.kms_vblank.pipe-A-wait-forked on rk3399-gru-kevin

[Geert Uytterhoeven]

Hi Mark,

Thanks for your report!

On Tue, Dec 13, 2022 at 5:58 PM Mark Brown <broonie at kernel.org> wrote:
> On Tue, Dec 13, 2022 at 05:56:30AM -0800, KernelCI bot wrote:
> The KernelCI bisection bot found regressions in at least two KMS tests
> in the Renesas tree on rk3399-gru-kevin just after the Renesas tree
> merged up mainline:
>
>    igt-kms-rockchip.kms_vblank.pipe-A-wait-forked
>    igt-kms-rockchip.kms_vblank.pipe-A-query-busy
>
> which it bisected to ca871659ec16 ("drm/bridge: analogix_dp: Support
> PSR-exit to disable transition").  I'm not *100%* sure I trust the
> bisection but it sure is suspicous that two separate bisects for related
> issues landed on the same commit.

... which is an old commit, added in v5.19-rc2, and which did not
enter through the renesas tree at all?

> Below is the full report for the bisect for the first test, the bisect
> for the latter looks identical.  It's got links to full logs for the
> test run and a Reported-by for the bot - I do see some backtraces from
> userspace in the output, the first is:
>
> | IGT-Version: 1.26-gf8a4a0b (aarch64) (Linux: 6.1.0 aarch64)
> | <14>[   35.444448] [IGT] drm_read: starting subtest short-buffer-wakeup
> | Starting subtest: short-buffer-wakeup
> |
> | (| drm_read:350) CRITICAL: Test assertion failure function generate_event, file ../tests/drm_read.c:65:
> | (drm_read:350) CRITICAL: <14>[   36.155642] [IGT] drm_read: exiting, ret=98
> | Failed assertion: kmstest_get_vblank(fd, pipe, DRM_VBLANK_EVENT)
> |
> | (drm_read:350) CRITICAL: Last errno: 22, Invalid argument
> | Stack trace:
> |
> |   #0 ../lib/igt_core.c:1933 __igt_fail_assert()
> |   #1 [<unknown>+0xd5362770]
> |   #2 [<unknown>+0xd536193c]
> |   #3 [__libc_start_main+0xe8]
> |   #4 [<unknown>+0xd5361974]
> |   #5 [<unknown<6>[   36.162851] Console: switching to colour frame buffer device 300x100>+0xd5361974]
> | Subtest short-buffer-wakeup failed.
>
> Unfortunately we don't have current results from mainline or -next.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds