linux-kernel - [drm/i915/gem] d9d29c747d: assertion

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Date:   Mon, 12 Jul 2021 11:28:47 +0800
From:   kernel test robot <oliver.sang@...el.com>
To:     Jason Ekstrand <jason@...kstrand.net>
Cc:     Daniel Vetter <daniel.vetter@...ll.ch>,
        LKML <linux-kernel@...r.kernel.org>,
        intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        lkp@...ts.01.org, lkp@...el.com
Subject: [drm/i915/gem]  d9d29c747d: assertion_failure



Greeting,

FYI, we noticed the following commit (built with gcc-9):

commit: d9d29c747df844e946ecd6089893be80c5d32403 ("drm/i915/gem: Don't allow changing the engine set on running contexts (v3)")
git://anongit.freedesktop.org/drm-intel drm-intel-gt-next


in testcase: igt
version: igt-x86_64-098d0b82-1_20210701
with following parameters:

	group: group-09
	ucode: 0xe2



on test machine: 8 threads Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz with 28G memory

caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):



If you fix the issue, kindly add following tag
Reported-by: kernel test robot <oliver.sang@...el.com>


[   61.793502]
[   61.799687]  - With timeslicing enabled
[   61.799689]
[   61.805694] Starting subtest: default-virtual
[   61.805696]
[   61.813914] (gem_watchdog:1648) CRITICAL: Test assertion failure function set_load_balancer, file ../tests/i915/gem_watchdog.c:244:
[   61.813917]
[   61.827334] Console: switching to colour dummy device 80x25
[   61.829275] (gem_watchdog:1648) CRITICAL: Failed assertion: __set_load_balancer(i915, ctx, ci, count, ext) == 0
[   61.832911]
[   61.833008] [IGT] kms_cdclk: executing


To reproduce:

        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        bin/lkp install                job.yaml  # job file is attached in this email
        bin/lkp split-job --compatible job.yaml  # generate the yaml file for lkp run
        bin/lkp run                    generated-yaml-file



---
0DAY/LKP+ Test Infrastructure                   Open Source Technology Center
https://lists.01.org/hyperkitty/list/lkp@lists.01.org       Intel Corporation

Thanks,
Oliver Sang


View attachment "config-5.13.0-rc3-01478-gd9d29c747df8" of type "text/plain" (174238 bytes)

View attachment "job-script" of type "text/plain" (5216 bytes)

Download attachment "dmesg.xz" of type "application/x-xz" (25084 bytes)

View attachment "igt" of type "text/plain" (10222 bytes)

View attachment "job.yaml" of type "text/plain" (4261 bytes)

View attachment "reproduce" of type "text/plain" (1965 bytes)