This is now fixed upstream in this commit: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=7ad816762f9bf89e940e618ea40c43138b479e10
This might be important enough to patch in Ubuntu eventually. Currently virtualized 32-bit guest operating systems combined with amdgpu driver on the host cause random crashes. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1881134 Title: amdgpu crashes in mode_support_and_system_configuration Status in linux package in Ubuntu: Confirmed Bug description: When switching window from gnome-terminal to firefox, the amdgpu kernel driver suddenly crashed. This caused screen to freeze completely, but ssh to the machine still worked ok. There is a similar bug filed in https://bugzilla.kernel.org/show_bug.cgi?id=206987 but not much activity. I'm not sure if there is an amdgpu specific bugtracker somewhere. Below is a decoded call trace and I've attached the full dmesg output. [455834.384976] simd exception: 0000 [#1] SMP NOPTI [455834.384980] CPU: 1 PID: 2411 Comm: Xorg Tainted: G W OE 5.4.0-31-generic #35-Ubuntu ... [455834.385061] Call Trace: [455834.385120] mode_support_and_system_configuration (/build/linux-FFoizL/linux-5.4.0/drivers/gpu/drm/amd/amdgpu/../display/dc/calcs/dcn_calc_auto.c:176) amdgpu [455834.385174] ? calculate_inits_and_adj_vp (/build/linux-FFoizL/linux-5.4.0/drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_resource.c:950 (discriminator 12)) amdgpu [455834.385230] dcn_validate_bandwidth (/build/linux-FFoizL/linux-5.4.0/drivers/gpu/drm/amd/amdgpu/../display/dc/calcs/dcn_calcs.c:1034) amdgpu [455834.385283] dc_validate_global_state (/build/linux-FFoizL/linux-5.4.0/drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_resource.c:2093) amdgpu [455834.385338] amdgpu_dm_atomic_check (/build/linux-FFoizL/linux-5.4.0/drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:7413) amdgpu [455834.385351] drm_atomic_check_only (/build/linux-FFoizL/linux-5.4.0/drivers/gpu/drm/drm_atomic.c:1179) drm [455834.385361] drm_atomic_commit (/build/linux-FFoizL/linux-5.4.0/drivers/gpu/drm/drm_atomic.c:1220) drm [455834.385370] drm_mode_obj_set_property_ioctl (/build/linux-FFoizL/linux-5.4.0/drivers/gpu/drm/drm_mode_object.c:496 /build/linux-FFoizL/linux-5.4.0/drivers/gpu/drm/drm_mode_object.c:533) drm [455834.385379] ? drm_mode_obj_find_prop_id (/build/linux-FFoizL/linux-5.4.0/drivers/gpu/drm/drm_mode_object.c:512) drm [455834.385386] drm_ioctl_kernel (/build/linux-FFoizL/linux-5.4.0/drivers/gpu/drm/drm_ioctl.c:793) drm [455834.385394] drm_ioctl (/build/linux-FFoizL/linux-5.4.0/include/linux/thread_info.h:119 /build/linux-FFoizL/linux-5.4.0/include/linux/thread_info.h:152 /build/linux-FFoizL/linux-5.4.0/include/linux/uaccess.h:151 /build/linux-FFoizL/linux-5.4.0/drivers/gpu/drm/drm_ioctl.c:888) drm [455834.385402] ? drm_mode_obj_find_prop_id (/build/linux-FFoizL/linux-5.4.0/drivers/gpu/drm/drm_mode_object.c:512) drm [455834.385406] ? recalc_sigpending (/build/linux-FFoizL/linux-5.4.0/kernel/signal.c:184) [455834.385440] amdgpu_drm_ioctl (/build/linux-FFoizL/linux-5.4.0/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c:1293) amdgpu [455834.385443] do_vfs_ioctl (/build/linux-FFoizL/linux-5.4.0/fs/ioctl.c:47 /build/linux-FFoizL/linux-5.4.0/fs/ioctl.c:510 /build/linux-FFoizL/linux-5.4.0/fs/ioctl.c:697) [455834.385444] ? recalc_sigpending (/build/linux-FFoizL/linux-5.4.0/kernel/signal.c:184) [455834.385446] ? _copy_from_user (/build/linux-FFoizL/linux-5.4.0/arch/x86/include/asm/uaccess_64.h:46 /build/linux-FFoizL/linux-5.4.0/arch/x86/include/asm/uaccess_64.h:71 /build/linux-FFoizL/linux-5.4.0/lib/usercopy.c:14) [455834.385448] ksys_ioctl (/build/linux-FFoizL/linux-5.4.0/include/linux/file.h:43 /build/linux-FFoizL/linux-5.4.0/fs/ioctl.c:715) [455834.385449] __x64_sys_ioctl (/build/linux-FFoizL/linux-5.4.0/fs/ioctl.c:719) [455834.385451] do_syscall_64 (/build/linux-FFoizL/linux-5.4.0/arch/x86/entry/common.c:290) [455834.385455] entry_SYSCALL_64_after_hwframe (/build/linux-FFoizL/linux-5.4.0/arch/x86/entry/entry_64.S:184) [455834.385456] RIP: 0033:0x7faf3181837b ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.4.0-31-generic 5.4.0-31.35 ProcVersionSignature: Ubuntu 5.4.0-31.35-generic 5.4.34 Uname: Linux 5.4.0-31-generic x86_64 ApportVersion: 2.20.11-0ubuntu27 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: petteri 1198 F.... pulseaudio /dev/snd/controlC0: petteri 1198 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ICEWM Date: Thu May 28 17:09:28 2020 InstallationDate: Installed on 2020-05-20 (7 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M. ProcFB: 0 amdgpudrmfb ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-5.4.0-31-generic root=UUID=81e6e5d0-6a69-412b-8f6c-d6d765ae32de ro rootflags=subvol=@ quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-5.4.0-31-generic N/A linux-backports-modules-5.4.0-31-generic N/A linux-firmware 1.187 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/18/2019 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P3.70 dmi.board.name: B450 Gaming-ITX/ac dmi.board.vendor: ASRock dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP3.70:bd11/18/2019:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnB450Gaming-ITX/ac:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.family: To Be Filled By O.E.M. dmi.product.name: To Be Filled By O.E.M. dmi.product.sku: To Be Filled By O.E.M. dmi.product.version: To Be Filled By O.E.M. dmi.sys.vendor: To Be Filled By O.E.M. 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