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header.from=amd.com; Received: from BN9PR12MB5033.namprd12.prod.outlook.com (2603:10b6:408:132::14) by LV8PR12MB9417.namprd12.prod.outlook.com (2603:10b6:408:204::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8489.22; Fri, 28 Feb 2025 15:49:39 +0000 Received: from BN9PR12MB5033.namprd12.prod.outlook.com ([fe80::deef:fa00:d7d4:5069]) by BN9PR12MB5033.namprd12.prod.outlook.com ([fe80::deef:fa00:d7d4:5069%5]) with mapi id 15.20.8489.021; Fri, 28 Feb 2025 15:49:39 +0000 Message-ID: <38868fe1-9194-4346-b7fd-b8d56e410f1b@amd.com> Date: Fri, 28 Feb 2025 21:19:34 +0530 User-Agent: Mozilla Thunderbird Subject: Re: Kernel module ae4dma caused my system to not boot To: Jesper Dangaard Brouer , Basavaraj Natikar Cc: Vinod Koul , dmaengine@vger.kernel.org, LKML , kernel-team References: <45ddbb23-bf92-4d46-84b6-6c80886d4278@kernel.org> Content-Language: en-US From: Basavaraj Natikar In-Reply-To: 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https://lore.kernel.org/all/20250203162511.911946-1-Basavaraj.Natikar@amd.com/ Thanks, -- Basavaraj On 2/28/2025 8:05 PM, Jesper Dangaard Brouer wrote: > Hi Basavaraj, > > When rebasing my devel kernel to v6.14 (6.14.0-rc3-traits-009-bench+), > my AMD testlab system didn't boot due to the kernel module: ae4dma. > I disabled the kernel module via CONFIG_AMD_AE4DMA so I can boot my > system again. > > CPU: AMD EPYC 9684X 96-Core Processor > > As a help for you to debug here are the kernel console messages that > seems relevant: > > [   13.853689] ae4dma 0000:85:00.1: enabling device (0000 -> 0002) > [   13.861287] genirq: Flags mismatch irq 0. 00000000 (0000:85:00.1) > vs. 00215a00 (timer) > [   13.870123] CPU: 0 UID: 0 PID: 8 Comm: kworker/0:0 Not tainted > 6.14.0-rc3-traits-009-bench+ #32 > [   13.870125] Hardware name: Lenovo HR355M-V3-G12/HR355M_V3_HPM, BIOS > HR355M_V3.G.026 10/13/2023 > [   13.870126] Workqueue: events work_for_cpu_fn > [   13.870132] Call Trace: > [   13.870134]  > [   13.870136]  dump_stack_lvl+0x64/0x80 > [   13.870141]  __setup_irq+0x522/0x6d0 > [   13.870145]  request_threaded_irq+0x10d/0x180 > [   13.870146]  devm_request_threaded_irq+0x71/0xd0 > [   13.870149]  ? __pfx_ae4_core_irq_handler+0x10/0x10 [ae4dma] > [   13.870153]  ae4_core_init+0x8f/0x2f0 [ae4dma] > [   13.870155]  ae4_pci_probe+0x1f3/0x270 [ae4dma] > [   13.870156]  local_pci_probe+0x42/0xa0 > [   13.870161]  work_for_cpu_fn+0x17/0x30 > [   13.870162]  process_one_work+0x181/0x3a0 > [   13.870165]  worker_thread+0x251/0x360 > [   13.870166]  ? __pfx_worker_thread+0x10/0x10 > [   13.870168]  kthread+0xee/0x240 > [   13.870170]  ? finish_task_switch.isra.0+0x88/0x2d0 > [   13.870173]  ? __pfx_kthread+0x10/0x10 > [   13.870174]  ret_from_fork+0x31/0x50 > [   13.870177]  ? __pfx_kthread+0x10/0x10 > [   13.870178]  ret_from_fork_asm+0x1a/0x30 > [   13.870182]  > [   14.010326] ccp 0000:03:00.5: SEV firmware updated from 1.55.32 to > 1.55.37 > [   16.565527] ae4dma 0000:85:00.1: probe with driver ae4dma failed > with error -16 > [   16.574958] ae4dma 0000:c1:00.1: enabling device (0000 -> 0002) > > Let me know if you need other data, > --Jesper >