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Tue, 23 Sep 2025 02:26:17 -0700 Received: from [10.221.136.181] (10.126.230.35) by rnnvmail201.nvidia.com (10.129.68.8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.34; Tue, 23 Sep 2025 02:26:15 -0700 Message-ID: Date: Tue, 23 Sep 2025 11:25:12 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: ast "WARN_ON(!__ast_dp_wait_enable("ast, enabled)) on reboot To: Thomas Zimmermann , KuoHsiang Chou CC: , Carol Soto , "Matt Ochs" References: Content-Language: en-US From: Nirmoy Das In-Reply-To: Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit X-Originating-IP: [10.126.230.35] X-ClientProxiedBy: rnnvmail202.nvidia.com (10.129.68.7) To rnnvmail201.nvidia.com (10.129.68.8) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ1PEPF000023CB:EE_|MN2PR12MB4125:EE_ X-MS-Office365-Filtering-Correlation-Id: f325aea9-89c8-474d-9660-08ddfa834786 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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CTRY:US; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:mail.nvidia.com; PTR:dc6edge1.nvidia.com; CAT:NONE; SFS:(13230040)(1800799024)(376014)(82310400026)(36860700013); DIR:OUT; SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Sep 2025 09:26:30.3821 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: f325aea9-89c8-474d-9660-08ddfa834786 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a; Ip=[216.228.117.160]; Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: SJ1PEPF000023CB.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB4125 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On 23.09.25 11:15, Thomas Zimmermann wrote: > Hi > > Am 23.09.25 um 10:34 schrieb Nirmoy Das: >> >> Hi Thomas and KuoHsiang >> >> >> (Not sure if there is separate portal to report AST issues. Let me >> know if there is one) >> >> We are observing the following trace on every reboot. I tried >> increasing the timeout value but that did not resolve the issue. >> >> I tried to read AST_IO_VGACRI(0xdf) and AST_IO_VGACRI(0xe3) which  >> returns a value of 0xff. I wonder if >> >> the device is accessible at pci_device_shutdown(). >> >> I have attached the lspci output for your review.  Please let me know >> if you have some ideas how to debug/fix this. >> > > Is that a new problem? I occasionally refactor parts of the driver. It > could happen that an older version works? We saw this on 6.14 and 6.16 so I think it is not a new issue. Should we try out more older kernel? Regards, Nirmoy > > Best regards > Thomas > >> [ 196.248014] ast 0008:02:00.0: [drm] >> drm_WARN_ON(!__ast_dp_wait_enable(ast, enabled)) [ 196.248045] >> WARNING: CPU: 76 PID: 1 at drivers/gpu/drm/ast/ast_dp.c:282 >> ast_dp_set_enable+0x124/0x158 [ast] [ 196.277550] Modules linked in: >> bcache qrtr cfg80211 binfmt_misc cdc_subset ast dax_hmem >> drm_shmem_helper cxl_acpi drm_client_lib cxl_port i2c_algo_bit >> cxl_core ipmi_ssif drm_kms_helper uio_pdrv_genirq uio coresight_trbe >> arm_spe_pmu arm_cspmu_module arm_smmuv3_pmu spi_nor mtd >> coresight_funnel acpi_power_meter acpi_ipmi coresight_etm4x coresight >> ipmi_msghandler dm_multipath efi_pstore drm nfnetlink ip_tables >> x_tables autofs4 overlay isofs nls_iso8859_1 raid10 raid456 >> async_raid6_recov async_memcpy async_pq async_xor async_tx xor >> xor_neon raid6_pq raid1 raid0 linear mlx5_ib ib_uverbs ib_core >> mlx5_core ghash_ce sm4_ce_cipher sm4 sm3_ce mlxfw sha3_ce psample >> i2c_smbus sha512_ce nvme tls sha1_ce arm_smccc_trng nvme_core >> pci_hyperv_intf spi_tegra210_quad dax_pmem i2c_tegra cdc_ether usbnet >> aes_neon_bs aes_neon_blk aes_ce_blk aes_ce_cipher [last unloaded: >> ipmi_devintf] [ 196.355667] CPU: 76 UID: 0 PID: 1 Comm: shutdown >> Tainted: G W 6.16.4-dev-main-nvidia-pset-linux-6-generic #16+f4490439 >> PREEMPT(none) [ 196.369453] Tainted: [W]=WARN [ 196.372481] Hardware >> name: NVIDIA Grace CPU P5041/P3880, BIOS FF.04.00 20250422 [ >> 196.379955] pstate: 63400009 (nZCv daif +PAN -UAO +TCO +DIT -SSBS >> BTYPE=--) [ 196.387073] pc : ast_dp_set_enable+0x124/0x158 [ast] [ >> 196.392148] lr : ast_dp_set_enable+0x124/0x158 [ast] [ 196.397221] sp >> : ffff80008049b930 [ 196.400604] x29: ffff80008049b930 x28: >> ffffa507dbec1b98 x27: ffff0000acb337b8 [ 196.407901] x26: >> 0000000000000000 x25: ffff1003985d2e00 x24: ffffa507dbdc45b8 [ >> 196.415197] x23: 0000000000000000 x22: 0000000000418958 x21: >> 00000000ffffffdf [ 196.422495] x20: ffff100008bac0c8 x19: >> 0000000000000000 x18: 000000000000004c [ 196.429790] x17: >> ffff100008b5f200 x16: ffffa508522b5ce8 x15: 0000000000000000 [ >> 196.437087] x14: 0000000000000000 x13: 2d2d2d2d2d2d2d2d x12: >> 2d2d2d2d5d206572 [ 196.444384] x11: 656820747563205b x10: >> 0000000000000020 x9 : ffffa508523621cc [ 196.451681] x8 : >> 00000000ffffffff x7 : 0000000000000030 x6 : 0000000005000000 [ >> 196.458976] x5 : 000000000000004d x4 : 00000000000000c0 x3 : >> 0000000000000003 [ 196.466271] x2 : 0000000000000000 x1 : >> 0000000000000000 x0 : ffff000081356040 [ 196.473566] Call trace: [ >> 196.476061] ast_dp_set_enable+0x124/0x158 [ast] (P) [ 196.481135] >> ast_astdp_encoder_helper_atomic_disable+0x28/0x90 [ast] [ 196.487630] >> disable_outputs+0x11c/0x3c8 [drm_kms_helper] [ 196.493160] >> drm_atomic_helper_commit_tail+0x2c/0xb0 [drm_kms_helper] [ >> 196.499753] ast_mode_config_helper_atomic_commit_tail+0x34/0x58 [ast] >> [ 196.506427] commit_tail+0xd8/0x220 [drm_kms_helper] [ 196.511503] >> drm_atomic_helper_commit+0x174/0x190 [drm_kms_helper] [ 196.517824] >> drm_atomic_commit+0x94/0xe0 [drm] [ 196.522392] >> drm_atomic_helper_disable_all+0x204/0x220 [drm_kms_helper] [ >> 196.529158] drm_atomic_helper_shutdown+0x90/0x158 [drm_kms_helper] [ >> 196.535567] ast_pci_shutdown+0x1c/0x30 [ast] [ 196.540020] >> pci_device_shutdown+0x3c/0xa8 [ 196.544216] >> device_shutdown+0x140/0x2b0 [ 196.548229] kernel_restart+0x4c/0xb8 [ >> 196.551974] __do_sys_reboot+0x148/0x260 [ 196.555979] >> __arm64_sys_reboot+0x2c/0x40 [ 196.560074] invoke_syscall+0x70/0x100 >> [ 196.563907] el0_svc_common.constprop.0+0x48/0xf8 [ 196.568712] >> do_el0_svc+0x28/0x40 [ 196.572097] el0_svc+0x34/0xd8 [ 196.575220] >> el0t_64_sync_handler+0x144/0x168 [ 196.579670] >> el0t_64_sync+0x1b0/0x1b8 [ 196.583411] ---[ end trace >> 0000000000000000 ]--- [ 196.656701] reboot: Restarting system >> >> lspci: >> >> 0008:03:00.0 PCI bridge: ASPEED Technology, Inc. AST1150 PCI-to-PCI >> Bridge (rev 06) (prog-if 00 [Normal decode]) Subsystem: ASPEED >> Technology, Inc. AST1150 PCI-to-PCI Bridge Physical Slot: 2-1 Flags: >> bus master, fast devsel, latency 0, NUMA node 0, IOMMU group 24 Bus: >> primary=03, secondary=04, subordinate=04, sec-latency=0 I/O behind >> bridge: 40000-40fff [size=4K] [16-bit] Memory behind bridge: >> 40000000-410fffff [size=17M] [32-bit] Prefetchable memory behind >> bridge: [disabled] [64-bit] Capabilities: [40] Power Management >> version 3 Capabilities: [68] Express PCI-Express to PCI/PCI-X Bridge, >> MSI 00 Capabilities: [b0] Subsystem: ASPEED Technology, Inc. AST1150 >> PCI-to-PCI Bridge Capabilities: [e0] Vendor Specific Information: >> Len=20 Capabilities: [100] Device Serial Number >> 00-80-5e-00-00-10-0b-b0 Capabilities: [10c] Secondary PCI Express >> Capabilities: [150] Virtual Channel Capabilities: [1e0] Vendor >> Specific Information: ID=0001 Rev=2 Len=010 Capabilities: [1f0] >> Advanced Error Reporting 0008:04:00.0 VGA compatible controller: >> ASPEED Technology, Inc. ASPEED Graphics Family (rev 52) (prog-if 00 >> [VGA controller]) DeviceName: Embedded Video Controller Subsystem: >> ASPEED Technology, Inc. ASPEED Graphics Family !!! Unknown header >> type 7f Memory at 650040000000 (32-bit, non-prefetchable) [size=16M] >> Memory at 650041000000 (32-bit, non-prefetchable) [size=256K] I/O >> ports at 40000 [size=128] Kernel driver in use: ast Kernel modules: ast >> >