From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from cmx-torrgo002.bell.net (mta-tor-005.bell.net [209.71.212.37]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 22A29EB34; Thu, 5 Jan 2023 19:51:17 +0000 (UTC) X-RG-CM-BuS: 0 X-RG-CM-SC: 0 X-RG-CM: Clean X-Originating-IP: [70.50.67.26] X-RG-Env-Sender: matt.fagnani@bell.net X-RG-Rigid: 63B725EB00005601 X-CM-Envelope: MS4xfHbVkB4MuMXoQjk1sixxFlIfbBI3/9mb+a24yvYfFZOqTuqmspkt218clGMWj2QnmrSCjp1aDW/R3f22rEKuVRUjv5Zb9zz2diA5P0D++/gEgzCv6Ovw Y8z7fbIk7Hjb2C4bUasDWjkHAyAUV23OH7jcPqpe7azX0a+WkgZUM55z3mICA1AequXSiH9qT4Gh7WKeW4/zX1ZabGeIhlCi/UvKXkr4bRfh8f/Uy8nmPxNX 6d2JAMkqMgzk3dt1UWw8ROF1y+3Fl4m4xXANrEln0LYPCvGIdphhib693cP7wN5Ik0Rmi85mWLJLTFK8r0L4jIB5p5/RxcCGcsq7IfpAqILKm0/THe6NHUKd Bd6YndxO0SIypNijCeuABPL8zzLOvuAM0ypsOc+MOH/qqH0+3ik2luSug11a8az+LNRWZfyxHBLFtXtyF3A/AshDf/ZTFzYIP3v1VUNVFidtC4Oi4aP1Ge1a XdDNQxJenhU0cgnWUsc8quCKVK7UsWmazh45eA== X-CM-Analysis: v=2.4 cv=DNZJoQBb c=1 sm=1 tr=0 ts=63b72a2c a=5bbZzBgFcFyHXceaIT16+A==:117 a=5bbZzBgFcFyHXceaIT16+A==:17 a=IkcTkHD0fZMA:10 a=5KLPUuaC_9wA:10 a=JU2Wjajv5rFpccWKvaoA:9 a=QEXdDO2ut3YA:10 Received: from [192.168.2.10] (70.50.67.26) by cmx-torrgo002.bell.net (5.8.807) (authenticated as matt.fagnani@bell.net) id 63B725EB00005601; Thu, 5 Jan 2023 14:51:08 -0500 Message-ID: <9f8bab1d-5f60-c962-3789-1b5ed8767076@bell.net> Date: Thu, 5 Jan 2023 14:51:06 -0500 Precedence: bulk X-Mailing-List: regressions@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/110.0 Thunderbird/110.0a1 Subject: =?UTF-8?Q?Re=3A_=5Bregression=2C_bisected=2C_pci/iommu=5D_Bug=C2=A0?= =?UTF-8?Q?216865_-_Black_screen_when_amdgpu_started_during_6=2E2-rc1_boot_w?= =?UTF-8?Q?ith_AMD_IOMMU_enabled?= To: Vasant Hegde , Baolu Lu , Thorsten Leemhuis Cc: Joerg Roedel , "iommu@lists.linux.dev" , LKML , "regressions@lists.linux.dev" , Linux PCI , Bjorn Helgaas References: <15d0f9ff-2a56-b3e9-5b45-e6b23300ae3b@leemhuis.info> <5aa0e698-f715-0481-36e5-46505024ebc1@bell.net> <157c4ca4-370a-5d7e-fe32-c64d934f6979@amd.com> <223ee6d6-70ea-1d53-8bc2-2d22201d8dde@bell.net> <6fff9d10-f77f-e55a-9020-8a1bd34cf508@amd.com> Content-Language: en-US From: Matt Fagnani In-Reply-To: <6fff9d10-f77f-e55a-9020-8a1bd34cf508@amd.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit I booted 6.2-rc2 + the patch four times with early kdump enabled and panicked the kernel. There weren't any kdump or dmesg files saved to /var/crash though. Nothing showed up in the journal from boots where the problem happened. The amdgpu crash happened before systemd-journald started from what I could tell. I tried to rebuild /boot/initramfs-6.2.0-rc2+kdump.img with amd_iommu=off added to the kernel command line with dracut, but an error that the kdumpbase module couldn't be found was shown. I read that a different dump capture kernel could be used with kdump, but I haven't figured out how to use that with early kdump yet. If anyone has ideas how to get the kdump and dmesg log, let me know. Thanks.