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,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 7B39EC63777 for ; Thu, 3 Dec 2020 08:22:29 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id C540521527 for ; Thu, 3 Dec 2020 08:22:28 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C540521527 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 298146B005D; Thu, 3 Dec 2020 03:22:28 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 2235F6B006C; Thu, 3 Dec 2020 03:22:28 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 0E98D6B006E; Thu, 3 Dec 2020 03:22:28 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0073.hostedemail.com [216.40.44.73]) by kanga.kvack.org (Postfix) with ESMTP id E92736B005D for ; Thu, 3 Dec 2020 03:22:27 -0500 (EST) Received: from smtpin15.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id AFB7A3636 for ; Thu, 3 Dec 2020 08:22:27 +0000 (UTC) X-FDA: 77551279134.15.form96_0a083c2273ba Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin15.hostedemail.com (Postfix) with ESMTP id 8D89A1814B0C1 for ; Thu, 3 Dec 2020 08:22:27 +0000 (UTC) X-HE-Tag: form96_0a083c2273ba X-Filterd-Recvd-Size: 10391 Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by imf05.hostedemail.com (Postfix) with ESMTP for ; Thu, 3 Dec 2020 08:22:25 +0000 (UTC) IronPort-SDR: QdWQo5UBaGTT6Eaxbe3DbWPdOzoYTRzswXVQFQFEqQGvhjHO5kbvpE7vcVJzRPwmqzz2C8m/7u JdS8RZrkxnGw== X-IronPort-AV: E=McAfee;i="6000,8403,9823"; a="191381971" X-IronPort-AV: E=Sophos;i="5.78,389,1599548400"; d="scan'208";a="191381971" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Dec 2020 00:22:24 -0800 IronPort-SDR: tVNgZCd0NrEoNU3NTr22Ytkm25gqA7omiRICkErN6sPz1Z6WM3HhJi7s+ducm7pW+3vX/qgDGC 1N2TGYjwp/OQ== X-IronPort-AV: E=Sophos;i="5.78,389,1599548400"; d="scan'208";a="550401465" Received: from xsang-optiplex-9020.sh.intel.com (HELO xsang-OptiPlex-9020) ([10.239.159.140]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Dec 2020 00:22:21 -0800 Date: Thu, 3 Dec 2020 16:36:29 +0800 From: Oliver Sang To: Thomas Zimmermann Cc: Sam Ravnborg , Maxime Ripard , LKML , Linux Memory Management List , lkp@lists.01.org, lkp@intel.com Subject: Re: [drm/fb] 1d46491d4a: WARNING:at_drivers/gpu/drm/drm_fb_helper.c:#drm_fb_helper_damage_work[drm_kms_helper] Message-ID: <20201203083629.GH27350@xsang-OptiPlex-9020> References: <20201202022936.GA12321@xsang-OptiPlex-9020> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.9.4 (2018-02-28) 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 08:41:49AM +0100, Thomas Zimmermann wrote: > Hi >=20 > there should be a line in the kernel log that says something like "Dama= ge > blitter failed" with an error code. Is there any chance of recovering i= t? >=20 Hi Thomas, we attached dmesg in original report, where below comes from. [ 28.258177] ------------[ cut here ]------------ [ 28.259527] bochs-drm 0000:00:02.0: Damage blitter failed: ret=3D-12 [ 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) mousedev(E) p= pdev(E) psmouse(E) crc32c_intel(E) input_leds(E) bochs_drm(E) drm_vram_he= lper(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), BIO= S 1.12.0-1 04/01/2014 [ 28.275819] Workqueue: events drm_fb_helper_damage_work [drm_kms_helpe= r] [ 28.279884] EIP: drm_fb_helper_damage_work+0x109/0x2d0 [drm_kms_helper= ] > 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: Mov= e damage blit code and its setup into separate routine") > > https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git mast= er > >=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/locktortur= e.txt > >=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 = log/backtrace): > >=20 > >=20 > > +--------------------------------------------------------------------= -------------------+------------+------------+ > > | = | fd2d856538 | 1d46491d4a | > > +--------------------------------------------------------------------= -------------------+------------+------------+ > > | WARNING:at_drivers/gpu/drm/drm_fb_helper.c:#drm_fb_helper_damage_wo= rk[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_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] > > [ 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 1= d 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: 0000000= 0 > > [ 28.289443] ESI: fffffff4 EDI: d2014000 EBP: d2c0dee4 ESP: d2c0de9= c > > [ 28.291058] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 0= 0010292 > > [ 28.292717] CR0: 80050033 CR2: b727a028 CR3: 12141000 CR4: 0004069= 0 > > [ 28.294316] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 0000000= 0 > > [ 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, 1996),= BIOS 1.12.0-1 04/01/2014 > > [ 28.319096] Workqueue: events drm_fb_helper_damage_work [drm_kms_h= elper] > > [ 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_help= er] > > [ 28.326167] ? drm_fb_helper_damage_work+0x109/0x2d0 [drm_kms_help= er] > > [ 28.327670] ? drm_fb_helper_damage_work+0x109/0x2d0 [drm_kms_help= er] > > [ 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_kms_he= lper] > > [ 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 1= d 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: 0000000= 0 > > [ 28.342910] ESI: fffffff4 EDI: d2014000 EBP: d2c0dee4 ESP: d2c0de9= c > > [ 28.344372] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 0= 0010292 > > [ 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_help= er] > > [ 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): [] console= _unlock+0x515/0x650 > > [ 28.378986] hardirqs last disabled at (9484): [] console= _unlock+0x425/0x650 > > [ 28.380284] softirqs last enabled at (9464): [] __do_so= ftirq+0x3fd/0x57c > > [ 28.381595] softirqs last disabled at (9381): [] call_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 modu= les_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 # job-sc= ript 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