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[108.49.102.102]) by smtp.gmail.com with ESMTPSA id m17sm2322439qkh.82.2021.03.18.10.16.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 18 Mar 2021 10:16:08 -0700 (PDT) Message-ID: <90e58cf788299c76b80ec72735ebfd33eef7fffd.camel@redhat.com> Subject: Re: [drm/i915/dp] 4a8d79901d: WARNING:at_drivers/gpu/drm/i915/display/intel_display_power.c:#assert_can_disable_lcpll[i915] From: Lyude Paul Reply-To: lyude@redhat.com To: Oliver Sang , "Sarvela, Tomi P" Cc: Jani Nikula , Vasily Khoruzhick , LKML , Linux Memory Management List , lkp@lists.01.org, lkp@intel.com, rui.zhang@intel.com, yu.c.chen@intel.com Date: Thu, 18 Mar 2021 13:16:07 -0400 In-Reply-To: <20210318021320.GA10304@xsang-OptiPlex-9020> References: <20210204090229.GH17757@xsang-OptiPlex-9020> <20210318021320.GA10304@xsang-OptiPlex-9020> Organization: Red Hat User-Agent: Evolution 3.38.4 (3.38.4-1.fc33) MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=lyude@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="UTF-8" X-Stat-Signature: pdwywsfm1dgsgyn9z6hmf1fp87b4s5h1 X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: D541B4142C4A Received-SPF: none (redhat.com>: No applicable sender policy available) receiver=imf17; identity=mailfrom; envelope-from=""; helo=us-smtp-delivery-124.mimecast.com; client-ip=216.205.24.124 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1616087848-78246 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: Well this is surprising, because I had been pretty sure we had asked some= one at Intel to test that this patch worked on samus and they had said that it d= id.=20 Is there any way you can get me the kernel messages from this failure wit= h drm.debug=3D0x16 log_buf_len=3D5M added to the kernel commandline? It's h= ard to see what's actually going on here that's causing this issue to still reoccur. Also adding Tomi P Sarvela onto this thread, since they were the ones who originally tested this On Thu, 2021-03-18 at 10:13 +0800, Oliver Sang wrote: > Hi Lyude, sorry for later. >=20 > before we send out the report, we also tested fe7d52bccab6, the issue s= till > exists on it. > attached one kmsg-fe7d52bccab6.xz FYI. >=20 > we also tested on latest v5.12-rc3, also exists. > attached kmsg-v5.12-rc3.xz FYI. >=20 >=20 >=20 > On Fri, Feb 05, 2021 at 02:53:11PM -0500, Lyude Paul wrote: > > Am I right in assuming this is likely a very delayed test result from > > before: > >=20 > > fe7d52bccab6 ("drm/i915/dp: Don't use DPCD backlights that need PWM > > enable/disable") > >=20 > > Made it into the kernel? I see that there's a PWM being left on, whic= h was > > the > > same issue we were seeing on fi-bdw-samus > >=20 > > On Thu, 2021-02-04 at 17:02 +0800, kernel test robot wrote: > > >=20 > > > Greeting, > > >=20 > > > FYI, we noticed the following commit (built with gcc-9): > > >=20 > > > commit: 4a8d79901d5bed0812d272c372aa40282937b50f ("drm/i915/dp: Ena= ble > > > Intel's > > > HDR backlight interface (only SDR for now)") > > > https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git=C2= =A0master > > >=20 > > >=20 > > > in testcase: suspend-stress > > > version:=20 > > > with following parameters: > > >=20 > > > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0mode: freeze > > > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0iterations: 10 > > >=20 > > >=20 > > >=20 > > > on test machine: 4 threads Broadwell-Y with 8G memory > > >=20 > > > caused below changes (please refer to attached dmesg/kmsg for entir= e > > > log/backtrace): > > >=20 > > >=20 > > >=20 > > > If you fix the issue, kindly add following tag > > > Reported-by: kernel test robot > > >=20 > > >=20 > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.137894] ------------[ cut= here ]------------ > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.137897] CPU PWM1 enabled > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.137930] WARNING: CPU: 3 P= ID: 575 at > > > drivers/gpu/drm/i915/display/intel_display_power.c:4902 > > > assert_can_disable_lcpll+0x335/0x3c0 [i915] > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.138084] Modules linked in= : sd_mod t10_pi sg > > > x86_pkg_temp_thermal intel_powerclamp i915 hid_rmi rmi_core hid_mul= titouch > > > coretemp intel_ra > > > pl_msr crct10dif_pclmul wmi_bmof crc32_pclmul intel_gtt crc32c_inte= l > > > ghash_clmulni_intel rapl drm_kms_helper intel_cstate ahci libahci > > > serio_raw > > > mei_me proces > > > sor_thermal_device intel_uncore processor_thermal_rfim syscopyarea > > > sysfillrect > > > intel_soc_dts_iosf sysimgblt intel_pch_thermal hid_sensor_custom > > > fb_sys_fops > > > li > > > bata bcma processor_thermal_mbox joydev mei drm processor_thermal_r= apl > > > intel_rapl_common int340x_thermal_zone i2c_hid ideapad_laptop > > > sparse_keymap > > > wmi rfkill > > > video int3400_thermal acpi_thermal_rel i2c_designware_platform dw_d= mac > > > i2c_designware_core acpi_pad ip_tables > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.138148] CPU: 3 PID: 575 C= omm: kworker/u8:6 Tainted: > > > G=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 W I=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0 5.11.0-rc2-00745-g4a8d79901d5b #1 > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.138153] Hardware name: LE= NOVO 80HE/VIUU4, BIOS > > > A6CN38WW > > > 09/30/2014 > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.138155] Workqueue: events= _unbound async_run_entry_fn > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.138161] RIP: > > > 0010:assert_can_disable_lcpll+0x335/0x3c0 > > > [i915] > > > kern=C2=A0 :info=C2=A0 : [=C2=A0=C2=A0 21.138263] ahci 0000:00:1f.2= : > > > pci_pm_suspend_late+0x0/0x40 > > > returned 0 after 0 usecs > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.138296] Code: c0 75 22 e8= 8d 61 cb ff e9 f3 fd ff ff > > > e8 > > > fd bc 6a c1 0f 0b e9 0c fd ff ff e8 f1 bc 6a c1 0f 0b e9 05 fe ff f= f e8 e5 > > > bc > > > 6a c1 <0f> 0b e9 cf fd ff ff e8 d9 bc 6a c1 0f 0b e9 a2 fd ff ff e8= cd bc > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.138300] RSP: 0018:ffffc90= 0006f3d58 EFLAGS: 00010282 > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.138304] RAX: 000000000000= 0000 RBX: ffff8881451002e8 > > > RCX: > > > 0000000000000027 > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.138307] RDX: 000000000000= 0027 RSI: 0000000000000002 > > > RDI: > > > ffff888249397cf8 > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.138310] RBP: ffff88814510= 0000 R08: ffff888249397cf0 > > > R09: > > > ffffc900006f3cf0 > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.138313] R10: 000000000000= 0001 R11: 3030302035313969 > > > R12: > > > ffff8881451007f0 > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.138316] R13: ffff88814510= 6c60 R14: 0000000000000002 > > > R15: > > > 0000000000000000 > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.138319] FS:=C2=A0 0000000= 000000000(0000) > > > GS:ffff888249380000(0000) knlGS:0000000000000000 > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.138322] CS:=C2=A0 0010 DS= : 0000 ES: 0000 CR0: > > > 0000000080050033 > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.138325] CR2: 0000557c22ec= 68a0 CR3: 0000000004c0a003 > > > CR4: > > > 00000000003706e0 > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.138329] Call Trace: > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.138334]=C2=A0 hsw_disable= _lcpll+0x22/0x280 [i915] > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.138479]=C2=A0 i915_drm_su= spend_late+0x5e/0x100 [i915] > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.138578]=C2=A0 ? pci_pm_po= weroff_late+0x40/0x40 > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.138582]=C2=A0 dpm_run_cal= lback+0x4c/0x140 > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.138590]=C2=A0 __device_su= spend_late+0x98/0x1a0 > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.138596]=C2=A0 async_suspe= nd_late+0x1b/0xa0 > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.138602]=C2=A0 async_run_e= ntry_fn+0x39/0x160 > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.138608]=C2=A0 process_one= _work+0x1ed/0x3c0 > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.138612]=C2=A0 worker_thre= ad+0x50/0x3c0 > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.138617]=C2=A0 ? process_o= ne_work+0x3c0/0x3c0 > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.138620]=C2=A0 kthread+0x1= 16/0x160 > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.138626]=C2=A0 ? kthread_p= ark+0xa0/0xa0 > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.138631]=C2=A0 ret_from_fo= rk+0x22/0x30 > > > kern=C2=A0 :warn=C2=A0 : [=C2=A0=C2=A0 21.138640] ---[ end trace a9= 3fe4d40a5a37bb ]--- > > >=20 > > >=20 > > >=20 > > > To reproduce: > > >=20 > > > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 git clone https://github= .com/intel/lkp-tests.git > > > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 cd lkp-tests > > > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 bin/lkp install job.yaml= =C2=A0 # job file is attached in this email > > > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 bin/lkp run=C2=A0=C2=A0=C2= =A0=C2=A0 job.yaml > > >=20 > > >=20 > > >=20 > > > Thanks, > > > Oliver Sang > > >=20 > >=20 > > --=20 > > Sincerely, > > =C2=A0=C2=A0 Lyude Paul (she/her) > > =C2=A0=C2=A0 Software Engineer at Red Hat > > =C2=A0=C2=A0=20 > > Note: I deal with a lot of emails and have a lot of bugs on my plate.= If > > you've > > asked me a question, are waiting for a review/merge on a patch, etc. = and I > > haven't responded in a while, please feel free to send me another ema= il to > > check > > on my status. I don't bite! > >=20 --=20 Sincerely, Lyude Paul (she/her) Software Engineer at Red Hat =20 Note: I deal with a lot of emails and have a lot of bugs on my plate. If = you've asked me a question, are waiting for a review/merge on a patch, etc. and = I haven't responded in a while, please feel free to send me another email t= o check on my status. I don't bite!