Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Subject: Re: [drm/fb] 6a1b34c0a3:
 WARNING:at_drivers/gpu/drm/drm_fb_helper.c:#drm_fb_helper_damage_work
To:     kernel test robot <oliver.sang@intel.com>
Cc:     daniel@ffwll.ch, airlied@linux.ie, sam@ravnborg.org,
        mripard@kernel.org, maarten.lankhorst@linux.intel.com,
        christian.koenig@amd.com, ville.syrjala@linux.intel.com,
        dri-devel@lists.freedesktop.org, 0day robot <lkp@intel.com>,
        LKML <linux-kernel@vger.kernel.org>, lkp@lists.01.org
References: <20201122141849.GH2390@xsang-OptiPlex-9020>
From:   Thomas Zimmermann <tzimmermann@suse.de>
Message-ID: <5dddb55b-cbe1-7778-3109-b84624bac407@suse.de>
Date:   Mon, 23 Nov 2020 09:04:22 +0100
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From: Thomas Zimmermann <tzimmermann@suse.de>
To: kernel test robot <oliver.sang@intel.com>
Cc: daniel@ffwll.ch, airlied@linux.ie, sam@ravnborg.org, mripard@kernel.org,
 maarten.lankhorst@linux.intel.com, christian.koenig@amd.com,
 ville.syrjala@linux.intel.com, dri-devel@lists.freedesktop.org,
 0day robot <lkp@intel.com>, LKML <linux-kernel@vger.kernel.org>,
 lkp@lists.01.org
Message-ID: <5dddb55b-cbe1-7778-3109-b84624bac407@suse.de>
Subject: Re: [drm/fb] 6a1b34c0a3:
 WARNING:at_drivers/gpu/drm/drm_fb_helper.c:#drm_fb_helper_damage_work
References: <20201122141849.GH2390@xsang-OptiPlex-9020>
In-Reply-To: <20201122141849.GH2390@xsang-OptiPlex-9020>

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Hi

Am 22.11.20 um 15:18 schrieb kernel test robot:
>=20
> Greeting,
>=20
> FYI, we noticed the following commit (built with gcc-9):
>=20
> commit: 6a1b34c0a339fdc75d7932ad5702f2177c9d7a1c ("drm/fb-helper: Move =
damage blit code and its setup into separate routine")
> url: https://github.com/0day-ci/linux/commits/Thomas-Zimmermann/drm-fb-=
helper-Various-fixes-and-cleanups/20201120-182750
>=20
>=20
> in testcase: trinity
> version: trinity-static-i386-x86_64-f93256fb_2019-08-28
> with following parameters:
>=20
> 	runtime: 300s
>=20
> test-description: Trinity is a linux system call fuzz tester.
> test-url: http://codemonkey.org.uk/projects/trinity/
>=20
>=20
> on test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -=
m 8G
>=20
> caused below changes (please refer to attached dmesg/kmsg for entire lo=
g/backtrace):

That dmesg is full of messages like

[  696.323556] alloc_vmap_area: 24 callbacks suppressed
[  696.323562] vmap allocation for size 3149824 failed: use=20
vmalloc=3D<size> to increase size

I think the test system needs to be reconfigured first.

Best regards
Thomas

>=20
>=20
> +----------------------------------------------------------------------=
-+------------+------------+
> |                                                                      =
 | 154f2d1afd | 6a1b34c0a3 |
> +----------------------------------------------------------------------=
-+------------+------------+
> | WARNING:at_drivers/gpu/drm/drm_fb_helper.c:#drm_fb_helper_damage_work=
 | 0          | 36         |
> | EIP:drm_fb_helper_damage_work                                        =
 | 0          | 36         |
> +----------------------------------------------------------------------=
-+------------+------------+
>=20
>=20
> If you fix the issue, kindly add following tag
> Reported-by: kernel test robot <oliver.sang@intel.com>
>=20
>=20
> [  106.616652] WARNING: CPU: 1 PID: 173 at drivers/gpu/drm/drm_fb_helpe=
r.c:434 drm_fb_helper_damage_work+0x371/0x390
> [  106.627732] Modules linked in:
> [  106.632419] CPU: 1 PID: 173 Comm: kworker/1:2 Not tainted 5.10.0-rc4=
-next-20201120-00007-g6a1b34c0a339 #3
> [  106.637806] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), B=
IOS 1.12.0-1 04/01/2014
> [  106.642853] Workqueue: events drm_fb_helper_damage_work
> [  106.647664] EIP: drm_fb_helper_damage_work+0x371/0x390
> [  106.652305] Code: b1 17 c7 01 68 bd 5b 2d c5 53 50 68 55 21 2d c5 83=
 15 44 b1 17 c7 00 e8 ae bc b1 01 83 05 48 b1 17 c7 01 83 15 4c b1 17 c7 =
00 <0f> 0b 83 05 50 b1 17 c7 01 83 15 54 b1 17 c7 00 83 c4 10 e9 78 fd
> [  106.663517] EAX: 0000002d EBX: c8730520 ECX: 00000847 EDX: 00000000
> [  106.668423] ESI: ca987000 EDI: cab274d8 EBP: f62f5f20 ESP: f62f5ee8
> [  106.673214] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 EFLAGS: 000=
10246
> [  106.678295] CR0: 80050033 CR2: 00000000 CR3: 063a7000 CR4: 000406d0
> [  106.683160] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
> [  106.687967] DR6: fffe0ff0 DR7: 00000400
> [  106.690763] Call Trace:
> [  106.693394]  process_one_work+0x3ea/0xaa0
> [  106.693501] ixgbevf: Intel(R) 10 Gigabit PCI Express Virtual Functio=
n Network Driver
> [  106.695300]  worker_thread+0x330/0x900
> [  106.697406] ixgbevf: Copyright (c) 2009 - 2018 Intel Corporation.
> [  106.702963]  kthread+0x190/0x210
> [  106.705709]  ? rescuer_thread+0x650/0x650
> [  106.708379]  ? kthread_insert_work_sanity_check+0x120/0x120
> [  106.711271]  ret_from_fork+0x1c/0x30
> [  106.713973] ---[ end trace dd528799d3369ac1 ]---
>=20
>=20
> To reproduce:
>=20
>          # build kernel
> 	cd linux
> 	cp config-5.10.0-rc4-next-20201120-00007-g6a1b34c0a339 .config
> 	make HOSTCC=3Dgcc-9 CC=3Dgcc-9 ARCH=3Di386 olddefconfig prepare module=
s_prepare bzImage
>=20
>          git clone https://github.com/intel/lkp-tests.git
>          cd lkp-tests
>          bin/lkp qemu -k <bzImage> job-script # job-script is attached =
in this email
>=20
>=20
>=20
> Thanks,
> Oliver Sang
>=20

--=20
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 N=FCrnberg, Germany
(HRB 36809, AG N=FCrnberg)
Gesch=E4ftsf=FChrer: Felix Imend=F6rffer

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