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<25bfc2ab-e73c-4191-9888-7e107f4e65db@oss.nxp.com> Date: Thu, 5 Mar 2026 14:22:15 +0800 User-Agent: Mozilla Thunderbird Subject: Re: [REGRESSION] boot failure on imx8mp due to e0203ddf9af7 To: Marco Felsch , Franz Schnyder Cc: linux-media@vger.kernel.org, linux-arm-kernel@lists.infradead.org, imx@lists.linux.dev, ulf.hansson@linaro.org, benjamin.gaignard@collabora.com, kernel@pengutronix.de, sebastian.fricke@collabora.com, linux-pm@vger.kernel.org, festevam@gmail.com, s.hauer@pengutronix.de, Frank.li@nxp.com, peng.fan@nxp.com, nicolas@ndufresne.ca, regressions@lists.linux.dev, eagle.zhou@nxp.com, linux-imx@nxp.com, p.zabel@pengutronix.de, hverkuil-cisco@xs4all.nl, mchehab@kernel.org, shawnguo@kernel.org, linux-kernel@vger.kernel.org, l.stach@pengutronix.de References: From: "Ming Qian(OSS)" In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: SI2PR02CA0022.apcprd02.prod.outlook.com (2603:1096:4:195::23) To 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List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi, On 3/5/2026 6:43 AM, Marco Felsch wrote: > Hi Franz, > > On 26-03-04, Franz Schnyder wrote: >> Hello, >> >> Our iMX8MP SoMs (Verdin and Toradex SMARC) fail to boot after >> commit e0203ddf9af7 ("media: verisilicon: Avoid G2 bus error while decoding H.264 and HEVC"). >> On rare occasions, it's still able to boot. >> It fails after having registered g1 VPU, probably when it tries to >> register g2 VPU. >> >> Ming: Any ideas on how to proceed here? >> >> Success:: >> [ 9.040517] hantro-vpu 38300000.video-codec: registered nxp,imx8mm-vpu-g1-dec as /dev/video0 >> [ 9.052133] hantro-vpu 38310000.video-codec: registered nxp,imx8mq-vpu-g2-dec as /dev/video1 >> >> >> Failure with decoded stacktrace:: >> >> [ 9.004477] hantro-vpu 38300000.video-codec: registered nxp,imx8mm-vpu-g1-dec as /dev/video0 >> [ 9.027097] Unable to handle kernel paging request at virtual address ffffd9c18eb05000 > > This is quite a nasty bug you triggered here! I think the issue is that > the newly added imx8mq_vpu_shared_resources[] is of type __initconst > where as it should be __initconst_or_module. You can test this > assumption if you switch from a module [M] build for the hantro_vpu > driver to a builtin [x] build. I will correct __initconst to __initconst_or_module. Thank you for pointing out the issue. Regards, Ming > > Regards, > Marco > > >> [ 9.027132] Mem abort info: >> [ 9.027139] ESR = 0x0000000096000007 >> [ 9.027147] EC = 0x25: DABT (current EL), IL = 32 bits >> [ 9.027156] SET = 0, FnV = 0 >> [ 9.027164] EA = 0, S1PTW = 0 >> [ 9.027171] FSC = 0x07: level 3 translation fault >> [ 9.027180] Data abort info: >> [ 9.027187] ISV = 0, ISS = 0x00000007, ISS2 = 0x00000000 >> [ 9.027196] CM = 0, WnR = 0, TnD = 0, TagAccess = 0 >> [ 9.027205] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 >> [ 9.027215] swapper pgtable: 4k pages, 48-bit VAs, pgdp=000000004924f000 >> [ 9.027226] [ffffd9c18eb05000] pgd=0000000000000000, p4d=10000000496dd003, pud=1000000102e42403, pmd=100000010c33d403, pte=0000000000000000 >> [ 9.027258] Internal error: Oops: 0000000096000007 [#1] SMP >> [ 9.101669] Modules linked in: snd_soc_fsl_sai crypto_engine rng_core imx_pcm_dma authenc snd_soc_fsl_aud2htx snd_soc_fsl_utils imx8mp_interconnect libdes i >> mx8mp_hdmi_pai evdev imx8mp_hdmi_tx aes_ce_blk dw_hdmi ghash_ce drm_display_helper snd_soc_simple_card hantro_vpu phy_fsl_imx8mq_usb libaes phy_fsl_samsung_hdm >> i snd_soc_simple_card_utils cec phy_fsl_imx8m_pcie v4l2_vp9 imx8mp_hdmi_pvi typec fsl_imx8_ddr_perf snd_soc_imx_hdmi gf128mul samsung_dsim v4l2_h264 etnaviv ti >> _ads1015 industrialio_triggered_buffer snd_soc_nau8822 ina2xx lm75 gpu_sched i3c lontium_lt8912b kfifo_buf governor_userspace imx_sdma flexcan imx_aipstz dwc3_ >> imx8mp imx_bus can_dev spi_nxp_fspi caam spi_imx error pwm_imx27 imx8mm_thermal nvmem_snvs_lpgpr snvs_pwrkey usb_conn_gpio gpio_keys display_connector roles lo >> op fuse ipv6 libsha1 autofs4 >> [ 9.173690] CPU: 3 UID: 0 PID: 45 Comm: kworker/u16:2 Not tainted 6.19.0+ #47 PREEMPT >> [ 9.181623] Hardware name: Toradex Verdin iMX8M Plus on Verdin Development Board (DT) >> [ 9.189462] Workqueue: events_unbound deferred_probe_work_func >> [ 9.195314] pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--) >> [ 9.202284] pc : of_find_matching_node_and_match (drivers/of/base.c:1129 drivers/of/base.c:1120 drivers/of/base.c:1187) >> [ 9.207869] lr : of_find_matching_node_and_match (drivers/of/base.c:1185) >> [ 9.213452] sp : ffff8000805dbad0 >> [ 9.216771] x29: ffff8000805dbad0 x28: 0000000000000000 x27: 0000000000000000 >> [ 9.223927] x26: 0000000000000000 x25: 0000000000000000 x24: ffffd9c2060d48e0 >> [ 9.231078] x23: 0000000000000000 x22: ffffd9c18eb05000 x21: ffff0000ff79d7f8 >> [ 9.238231] x20: 0000000000000000 x19: ffffd9c18eb05000 x18: 00000000ffffffff >> [ 9.245385] x17: ffff263ef9a67000 x16: ffffd9c2055d3d54 x15: ffff8000805db870 >> [ 9.252536] x14: 0000000000000000 x13: 006365646f632d6f x12: 0000000000000001 >> [ 9.259689] x11: 0000000000000003 x10: 0000000000000020 x9 : 0000000000000000 >> [ 9.266842] x8 : 0000000000000020 x7 : 00000000ffffffff x6 : ffff0000c4a9d8c8 >> [ 9.273995] x5 : 0000000000000014 x4 : 0000000000000000 x3 : 0000000000000001 >> [ 9.281145] x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000 >> [ 9.288301] Call trace: >> [ 9.290753] of_find_matching_node_and_match (drivers/of/base.c:1129 drivers/of/base.c:1120 drivers/of/base.c:1187) (P) >> [ 9.296336] hantro_probe (./include/linux/of.h:983 drivers/media/platform/verisilicon/hantro_drv.c:1047 drivers/media/platform/verisilicon/hantro_drv.c:1225) hantro_vpu >> [ 9.301144] platform_probe (drivers/base/platform.c:1449) >> [ 9.304815] really_probe (drivers/base/dd.c:583 drivers/base/dd.c:661) >> [ 9.308399] __driver_probe_device (drivers/base/dd.c:803) >> [ 9.312765] driver_probe_device (drivers/base/dd.c:833) >> [ 9.316956] __device_attach_driver (drivers/base/dd.c:962) >> [ 9.321415] bus_for_each_drv (drivers/base/bus.c:500) >> [ 9.325262] __device_attach (drivers/base/dd.c:1035) >> [ 9.329109] device_initial_probe (drivers/base/dd.c:1088) >> [ 9.333303] bus_probe_device (drivers/base/bus.c:576) >> [ 9.337152] deferred_probe_work_func (drivers/base/dd.c:125 (discriminator 14)) >> [ 9.341697] process_one_work (kernel/workqueue.c:3268) >> [ 9.345719] worker_thread (kernel/workqueue.c:3334 kernel/workqueue.c:3421) >> [ 9.349477] kthread (kernel/kthread.c:467) >> [ 9.352716] ret_from_fork (arch/arm64/kernel/entry.S:861) >> [ 9.356303] Code: 6b14001f 9a93d35a 1a80d294 91032273 (39400264) >> All code >> ======== >> 0: 6b14001f cmp w0, w20 >> 4: 9a93d35a csel x26, x26, x19, le >> 8: 1a80d294 csel w20, w20, w0, le >> c: 91032273 add x19, x19, #0xc8 >> 10:* 39400264 ldrb w4, [x19] <-- trapping instruction >> >> Code starting with the faulting instruction >> =========================================== >> 0: 39400264 ldrb w4, [x19] >> [ 9.362413] ---[ end trace 0000000000000000 ]--- >> [ 9.367037] note: kworker/u16:2[45] exited with irqs disabled >> [ 9.367134] note: kworker/u16:2[45] exited with preempt_count 1 >> >> >> Thanks, >> Franz >> >> >> >