From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 01E33C4361B for ; Mon, 7 Dec 2020 00:50:13 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 843EB22D06 for ; Mon, 7 Dec 2020 00:50:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 843EB22D06 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id E85998D0003; Sun, 6 Dec 2020 19:50:11 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id E35D98D0001; Sun, 6 Dec 2020 19:50:11 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id D25368D0003; Sun, 6 Dec 2020 19:50:11 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0081.hostedemail.com [216.40.44.81]) by kanga.kvack.org (Postfix) with ESMTP id BADC18D0001 for ; Sun, 6 Dec 2020 19:50:11 -0500 (EST) Received: from smtpin05.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 820461EE6 for ; Mon, 7 Dec 2020 00:50:11 +0000 (UTC) X-FDA: 77564654622.05.ear83_610ee25273da Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin05.hostedemail.com (Postfix) with ESMTP id 66F3E18014C88 for ; Mon, 7 Dec 2020 00:50:11 +0000 (UTC) X-HE-Tag: ear83_610ee25273da X-Filterd-Recvd-Size: 12043 Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by imf39.hostedemail.com (Postfix) with ESMTP for ; Mon, 7 Dec 2020 00:50:09 +0000 (UTC) IronPort-SDR: xFt4hGeWxf3Cv2K2+BA+Irkt1frmXMDbBxte7plyFkrDtC1z/Q4IsXmgUQU5BXwkLOpemM8BD5 daLfCYA1UXyg== X-IronPort-AV: E=McAfee;i="6000,8403,9827"; a="172852914" X-IronPort-AV: E=Sophos;i="5.78,398,1599548400"; d="scan'208";a="172852914" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Dec 2020 16:50:07 -0800 IronPort-SDR: tl6IGZn8SxILNCuxaRkN7d2+37U7OGufMYXcAW/fHtMeX+EvlEwH1pe+mWQ/gU1w+ntOea8LpH HEdukFsUInhg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.78,398,1599548400"; d="scan'208";a="541341327" Received: from pl-dbox.sh.intel.com (HELO intel.com) ([10.239.159.39]) by fmsmga005.fm.intel.com with ESMTP; 06 Dec 2020 16:50:05 -0800 Date: Mon, 7 Dec 2020 08:45:59 +0800 From: Philip Li To: Thomas Zimmermann Cc: Oliver Sang , Sam Ravnborg , Maxime Ripard , LKML , Linux Memory Management List , lkp@lists.01.org, lkp@intel.com Subject: Re: [LKP] Re: [drm/fb] 1d46491d4a: WARNING:at_drivers/gpu/drm/drm_fb_helper.c:#drm_fb_helper_damage_work[drm_kms_helper] Message-ID: <20201207004559.GA21222@intel.com> References: <20201202022936.GA12321@xsang-OptiPlex-9020> <20201203083629.GH27350@xsang-OptiPlex-9020> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Thu, Dec 03, 2020 at 10:34:49AM +0100, Thomas Zimmermann wrote: > Hi >=20 > Am 03.12.20 um 09:36 schrieb Oliver Sang: > > On Thu, Dec 03, 2020 at 08:41:49AM +0100, Thomas Zimmermann wrote: > > > Hi > > >=20 > > > there should be a line in the kernel log that says something like "= Damage > > > blitter failed" with an error code. Is there any chance of recoveri= ng it? > > >=20 > >=20 > > Hi Thomas, > >=20 > > we attached dmesg in original report, where below comes from. > >=20 > > [ 28.258177] ------------[ cut here ]------------ > > [ 28.259527] bochs-drm 0000:00:02.0: Damage blitter failed: ret=3D-= 12 >=20 > Thanks, that's the line I was looking for. Errno 12 means out-of-memory= . > It's not something related to the fbdev code, but rather another instan= ce of > the test system running out of memory. Presumably, it comes from [1]. Thanks Thomas, we will take care of this. Sorry for the false positive. >=20 > Best regards > Thomas >=20 > [1] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git= /tree/drivers/gpu/drm/ttm/ttm_bo_util.c?id=3D1d46491d4a08d7ee657e09808f87= d169444a2652#n475 >=20 >=20 > > [ 28.261007] WARNING: CPU: 0 PID: 122 at drivers/gpu/drm/drm_fb_hel= per.c:434 drm_fb_helper_damage_work+0x109/0x2d0 [drm_kms_helper] > > [ 28.263802] Modules linked in: locktorture(E) torture(E) mousedev(= E) ppdev(E) psmouse(E) crc32c_intel(E) input_leds(E) bochs_drm(E) drm_vra= m_helper(E) drm_ttm_helper(E) ttm(E) drm_kms_helper(E) parport_pc(E) rtc_= cmos(E) parport(E) drm(E) evbug(E) i6300esb(E) i2c_piix4(E) autofs4(E) > > [ 28.271897] CPU: 0 PID: 122 Comm: kworker/0:2 Tainted: G = E 5.10.0-rc3-01102-g1d46491d4a08 #1 > > [ 28.273904] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),= BIOS 1.12.0-1 04/01/2014 > > [ 28.275819] Workqueue: events drm_fb_helper_damage_work [drm_kms_h= elper] > > [ 28.279884] EIP: drm_fb_helper_damage_work+0x109/0x2d0 [drm_kms_he= lper] > >=20 > >=20 > > > Best regards > > > Thomas > > >=20 > > > Am 02.12.20 um 03:29 schrieb kernel test robot: > > > >=20 > > > > Greeting, > > > >=20 > > > > FYI, we noticed the following commit (built with gcc-9): > > > >=20 > > > > commit: 1d46491d4a08d7ee657e09808f87d169444a2652 ("drm/fb-helper:= Move damage blit code and its setup into separate routine") > > > > https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git = master > > > >=20 > > > >=20 > > > > in testcase: locktorture > > > > version: > > > > with following parameters: > > > >=20 > > > > runtime: 300s > > > > test: cpuhotplug > > > >=20 > > > > test-description: This torture test consists of creating a number= of kernel threads which acquire the lock and hold it for specific amount= of time, thus simulating different critical region behaviors. > > > > test-url: https://www.kernel.org/doc/Documentation/locking/lockto= rture.txt > > > >=20 > > > >=20 > > > > on test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -s= mp 2 -m 8G > > > >=20 > > > > caused below changes (please refer to attached dmesg/kmsg for ent= ire log/backtrace): > > > >=20 > > > >=20 > > > > +----------------------------------------------------------------= -----------------------+------------+------------+ > > > > | = | fd2d856538 | 1d46491d4a | > > > > +----------------------------------------------------------------= -----------------------+------------+------------+ > > > > | WARNING:at_drivers/gpu/drm/drm_fb_helper.c:#drm_fb_helper_damag= e_work[drm_kms_helper] | 0 | 26 | > > > > | EIP:drm_fb_helper_damage_work = | 0 | 26 | > > > > +----------------------------------------------------------------= -----------------------+------------+------------+ > > > >=20 > > > >=20 > > > > If you fix the issue, kindly add following tag > > > > Reported-by: kernel test robot > > > >=20 > > > >=20 > > > > [ 28.261007] WARNING: CPU: 0 PID: 122 at drivers/gpu/drm/drm_fb= _helper.c:434 drm_fb_helper_damage_work+0x109/0x2d0 [drm_kms_helper] > > > > [ 28.263802] Modules linked in: locktorture(E) torture(E) mouse= dev(E) ppdev(E) psmouse(E) crc32c_intel(E) input_leds(E) bochs_drm(E) drm= _vram_helper(E) drm_ttm_helper(E) ttm(E) drm_kms_helper(E) parport_pc(E) = rtc_cmos(E) parport(E) drm(E) evbug(E) i6300esb(E) i2c_piix4(E) autofs4(E= ) > > > > [ 28.271897] CPU: 0 PID: 122 Comm: kworker/0:2 Tainted: G = E 5.10.0-rc3-01102-g1d46491d4a08 #1 > > > > [ 28.273904] Hardware name: QEMU Standard PC (i440FX + PIIX, 19= 96), BIOS 1.12.0-1 04/01/2014 > > > > [ 28.275819] Workqueue: events drm_fb_helper_damage_work [drm_k= ms_helper] > > > > [ 28.279884] EIP: drm_fb_helper_damage_work+0x109/0x2d0 [drm_km= s_helper] > > > > [ 28.281467] Code: 47 10 8b 58 2c 85 db 0f 84 bc 01 00 00 e8 1f= f0 da f4 89 74 24 0c 89 5c 24 08 89 44 24 04 c7 04 24 98 c1 40 df e8 f7 = 50 1d f5 <0f> 0b 31 c9 c7 04 24 01 00 00 00 ba 01 00 00 00 b8 3c e8 40 df= e8 > > > > [ 28.285055] EAX: 00000036 EBX: c1c91420 ECX: 00000000 EDX: 000= 00000 > > > > [ 28.289443] ESI: fffffff4 EDI: d2014000 EBP: d2c0dee4 ESP: d2c= 0de9c > > > > [ 28.291058] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAG= S: 00010292 > > > > [ 28.292717] CR0: 80050033 CR2: b727a028 CR3: 12141000 CR4: 000= 40690 > > > > [ 28.294316] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 000= 00000 > > > > [ 28.295915] DR6: fffe0ff0 DR7: 00000400 > > > > [ 28.300768] Call Trace: > > > > [ 28.302117] process_one_work+0x31b/0x7b0 > > > > [ 28.303532] ? process_one_work+0x272/0x7b0 > > > > [ 28.304976] worker_thread+0x29a/0x5d0 > > > > [ 28.308712] ? process_one_work+0x7b0/0x7b0 > > > > [ 28.310129] kthread+0x181/0x1a0 > > > > [ 28.311464] ? process_one_work+0x7b0/0x7b0 > > > > [ 28.312878] ? kthread_create_worker_on_cpu+0x30/0x30 > > > > [ 28.314318] ret_from_fork+0x1c/0x28 > > > > [ 28.315645] CPU: 0 PID: 122 Comm: kworker/0:2 Tainted: G = E 5.10.0-rc3-01102-g1d46491d4a08 #1 > > > > [ 28.317414] Hardware name: QEMU Standard PC (i440FX + PIIX, 19= 96), BIOS 1.12.0-1 04/01/2014 > > > > [ 28.319096] Workqueue: events drm_fb_helper_damage_work [drm_k= ms_helper] > > > > [ 28.320674] Call Trace: > > > > [ 28.321947] dump_stack+0x6d/0x8b > > > > [ 28.323278] __warn.cold+0x24/0x49 > > > > [ 28.324639] ? drm_fb_helper_damage_work+0x109/0x2d0 [drm_kms_= helper] > > > > [ 28.326167] ? drm_fb_helper_damage_work+0x109/0x2d0 [drm_kms_= helper] > > > > [ 28.327670] ? drm_fb_helper_damage_work+0x109/0x2d0 [drm_kms_= helper] > > > > [ 28.329165] report_bug+0xb0/0xf0 > > > > [ 28.330438] ? irq_work_queue+0x13/0x70 > > > > [ 28.331729] ? exc_overflow+0x60/0x60 > > > > [ 28.333002] handle_bug+0x2a/0x50 > > > > [ 28.334227] exc_invalid_op+0x28/0x80 > > > > [ 28.335462] handle_exception+0x15d/0x15d > > > > [ 28.336729] EIP: drm_fb_helper_damage_work+0x109/0x2d0 [drm_km= s_helper] > > > > [ 28.338148] Code: 47 10 8b 58 2c 85 db 0f 84 bc 01 00 00 e8 1f= f0 da f4 89 74 24 0c 89 5c 24 08 89 44 24 04 c7 04 24 98 c1 40 df e8 f7 = 50 1d f5 <0f> 0b 31 c9 c7 04 24 01 00 00 00 ba 01 00 00 00 b8 3c e8 40 df= e8 > > > > [ 28.341442] EAX: 00000036 EBX: c1c91420 ECX: 00000000 EDX: 000= 00000 > > > > [ 28.342910] ESI: fffffff4 EDI: d2014000 EBP: d2c0dee4 ESP: d2c= 0de9c > > > > [ 28.344372] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAG= S: 00010292 > > > > [ 28.345883] ? cpu_latency_qos_write+0xeb/0xf0 > > > > [ 28.347203] ? run_init_process+0x5b/0x158 > > > > [ 28.348483] ? run_init_process+0x5b/0x158 > > > > [ 28.349714] ? exc_overflow+0x60/0x60 > > > > [ 28.350895] ? drm_fb_helper_damage_work+0x109/0x2d0 [drm_kms_= helper] > > > > [ 28.352244] process_one_work+0x31b/0x7b0 > > > > [ 28.353432] ? process_one_work+0x272/0x7b0 > > > > [ 28.354599] worker_thread+0x29a/0x5d0 > > > > [ 28.355730] ? process_one_work+0x7b0/0x7b0 > > > > [ 28.356894] kthread+0x181/0x1a0 > > > > [ 28.357942] ? process_one_work+0x7b0/0x7b0 > > > > [ 28.359019] ? kthread_create_worker_on_cpu+0x30/0x30 > > > > [ 28.360134] ret_from_fork+0x1c/0x28 > > > > [ 28.376652] irq event stamp: 9469 > > > > [ 28.377678] hardirqs last enabled at (9477): [] con= sole_unlock+0x515/0x650 > > > > [ 28.378986] hardirqs last disabled at (9484): [] con= sole_unlock+0x425/0x650 > > > > [ 28.380284] softirqs last enabled at (9464): [] __d= o_softirq+0x3fd/0x57c > > > > [ 28.381595] softirqs last disabled at (9381): [] cal= l_on_stack+0x4c/0x60 > > > > [ 28.382878] ---[ end trace b5fac24d1c204ab3 ]--- > > > >=20 > > > >=20 > > > > To reproduce: > > > >=20 > > > > # build kernel > > > > cd linux > > > > cp config-5.10.0-rc3-01102-g1d46491d4a08 .config > > > > make HOSTCC=3Dgcc-9 CC=3Dgcc-9 ARCH=3Di386 olddefconfig prepare = modules_prepare bzImage modules > > > > make HOSTCC=3Dgcc-9 CC=3Dgcc-9 ARCH=3Di386 INSTALL_MOD_PATH=3D modules_install > > > > cd > > > > find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz > > > >=20 > > > >=20 > > > > git clone https://github.com/intel/lkp-tests.git > > > > cd lkp-tests > > > > bin/lkp qemu -k -m modules.cgz job-script # j= ob-script is attached in this email > > > >=20 > > > >=20 > > > >=20 > > > > Thanks, > > > > Oliver Sang > > > >=20 > > >=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 > > >=20 > >=20 > >=20 > >=20 >=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 >=20 > _______________________________________________ > LKP mailing list -- lkp@lists.01.org > To unsubscribe send an email to lkp-leave@lists.01.org