linux-kernel - [drm] 8e984da3e5: WARNING:at_drivers/gpu/drm/drm_modeset_lock.c:#drm_warn_on_modeset_not_all

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Date:   Tue, 26 May 2020 12:58:06 +0800
From:   kernel test robot <rong.a.chen@...el.com>
To:     Sidong Yang <realwakka@...il.com>
Cc:     Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Sidong Yang <realwakka@...il.com>,
        intel-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, lkp@...ts.01.org
Subject: [drm] 8e984da3e5:
 WARNING:at_drivers/gpu/drm/drm_modeset_lock.c:#drm_warn_on_modeset_not_all_locked[drm]

Greeting,

FYI, we noticed the following commit (built with gcc-7):

commit: 8e984da3e5752f18c24c39240338fec8c8c9c971 ("[PATCH] drm: Replace deprecated function in drm_crtc_helper")
url: https://github.com/0day-ci/linux/commits/Sidong-Yang/drm-Replace-deprecated-function-in-drm_crtc_helper/20200521-021130


in testcase: rcutorture
with following parameters:

	runtime: 300s
	test: default
	torture_type: tasks

test-description: rcutorture is rcutorture kernel module load/unload test.
test-url: https://www.kernel.org/doc/Documentation/RCU/torture.txt


on test machine: 32 threads AMD Opteron(TM) Processor 6276 with 128G 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 <rong.a.chen@...el.com>


[   25.591666] WARNING: CPU: 0 PID: 351 at drivers/gpu/drm/drm_modeset_lock.c:185 drm_warn_on_modeset_not_all_locked+0x6c/0x80 [drm]
[   25.605759] Modules linked in: kvm mgag200(+) irqbypass fjes(-) drm_vram_helper drm_ttm_helper crct10dif_pclmul ttm crc32_pclmul crc32c_intel drm_kms_helper syscopyarea ghash_clmulni_intel ata_generic sysfillrect snd_pcm ahci pata_acpi sysimgblt libahci aesni_intel pata_atiixp fb_sys_fops snd_timer ipmi_si crypto_simd ipmi_devintf cryptd snd uas drm libata soundcore glue_helper sp5100_tco ipmi_msghandler usb_storage pcspkr serio_raw fam15h_power k10temp i2c_piix4 joydev acpi_cpufreq ip_tables
[   25.649431] CPU: 0 PID: 351 Comm: kworker/0:3 Not tainted 5.7.0-rc6-00038-g8e984da3e5752 #1
[   25.657779] Hardware name: Supermicro H8DGU/H8DGU, BIOS 2.0        09/08/11  
[   25.664920] Workqueue: events work_for_cpu_fn
[   25.669316] RIP: 0010:drm_warn_on_modeset_not_all_locked+0x6c/0x80 [drm]
[   25.676642] Code: 01 00 00 e8 e6 c2 cb c0 84 c0 74 1a 49 8d bc 24 78 01 00 00 e8 d5 c2 cb c0 84 c0 74 0d 5b 5d 41 5c c3 0f 0b eb c8 0f 0b eb e2 <0f> 0b 5b 5d 41 5c c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 0f 1f
[   25.695432] RSP: 0018:ffffc90006b7bce8 EFLAGS: 00010246
[   25.700671] RAX: 0000000000000000 RBX: ffff88a01cb65ad8 RCX: 0000000000000000
[   25.707804] RDX: ffff88a01cb67050 RSI: ffffc90006b7bd48 RDI: ffff88a01cb65978
[   25.710825] ata4: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[   25.714940] RBP: ffff88a01cb65ae8 R08: ffff88a01cb67050 R09: ffff888107c06d80
[   25.714942] R10: ffffc90006aebca8 R11: 00000000000001c6 R12: ffff88a01cb65800
[   25.714944] R13: ffff8887ef4ae000 R14: ffffc90022000000 R15: ffff88a01cb65800
[   25.714947] FS:  0000000000000000(0000) GS:ffff8887ffc00000(0000) knlGS:0000000000000000
[   25.714949] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.714952] CR2: 00007f98040d8000 CR3: 0000000feeb20000 CR4: 00000000000406f0
[   25.714958] Call Trace:
[   25.766039]  __drm_helper_disable_unused_functions+0x18/0xe0 [drm_kms_helper]
[   25.773197]  drm_helper_disable_unused_functions+0x68/0xb0 [drm_kms_helper]
[   25.780172]  drm_fbdev_client_hotplug+0x159/0x1b0 [drm_kms_helper]
[   25.786378]  drm_fbdev_generic_setup+0x9b/0x110 [drm_kms_helper]
[   25.792402]  mgag200_driver_load+0x377/0x4c0 [mgag200]
[   25.797550]  mga_pci_probe+0x79/0xd0 [mgag200]
[   25.802004]  local_pci_probe+0x42/0x90
[   25.805769]  work_for_cpu_fn+0x16/0x20
[   25.809550]  process_one_work+0x1b0/0x3e0
[   25.813580]  ? move_linked_works+0x6e/0xa0
[   25.817713]  worker_thread+0x1e5/0x3b0
[   25.821467]  ? process_one_work+0x3e0/0x3e0
[   25.825653]  kthread+0x12c/0x150
[   25.828886]  ? kthread_park+0x90/0x90
[   25.832581]  ret_from_fork+0x22/0x40
[   25.836166] ---[ end trace 29e2fb1609eae123 ]---


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 run     job.yaml



Thanks,
Rong Chen


View attachment "config-5.7.0-rc6-00038-g8e984da3e5752" of type "text/plain" (202345 bytes)

View attachment "job-script" of type "text/plain" (5014 bytes)

View attachment "dmesg" of type "text/plain" (142556 bytes)

View attachment "rcutorture" of type "text/plain" (13398 bytes)

View attachment "job.yaml" of type "text/plain" (4187 bytes)

View attachment "reproduce" of type "text/plain" (84 bytes)