5.8.1 nouveau oops on ksys_ioctl
Ubuntu-20.04 vm guest per attached libvirt xml definition attached, with mainline kernel from https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.8.1/
Triggered after booting to guest, right clicking to "Display settings" on the desktop (the QXL splict display was active, nvidia card output was bios screen or black). Crashed before the display settings activated.
[ 91.502311] BUG: unable to handle page fault for address: ffffffffffffffe2
[ 91.502313] #PF: supervisor read access in kernel mode
[ 91.502314] #PF: error_code(0x0000) - not-present page
[ 91.502314] PGD 5e6c0f067 P4D 5e6c0f067 PUD 5e6c11067 PMD 0
[ 91.502316] Oops: 0000 [#1] SMP NOPTI
[ 91.502318] CPU: 2 PID: 2389 Comm: gnome-shell Not tainted 5.8.1-050801-generic #202008111432
[ 91.502318] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015
[ 91.502366] RIP: 0010:drm_gem_map_dma_buf+0x43/0x100 [drm]
[ 91.502368] Code: 00 00 83 fe 03 0f 84 aa 00 00 00 48 8b 87 40 01 00 00 41 89 f5 48 85 c0 74 61 48 8b 40 38 e8 e4 10 34 c7 49 89 c4 48 8b 7b 08 <41> 8b 54 24 08 49 8b 34 24 48 8b 87 40 02 00 00 48 85 c0 74 0c 41
[ 91.502368] RSP: 0018:ffffa3d9817bfc70 EFLAGS: 00010282
[ 91.502369] RAX: ffffffffffffffda RBX: ffff933fe8164540 RCX: 0000000000000000
[ 91.502370] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff933ff21150b0
[ 91.502371] RBP: ffffa3d9817bfc88 R08: ffff933fe76da690 R09: ffffa3d9817bfb64
[ 91.502371] R10: 0000000000000042 R11: 0000000000000004 R12: ffffffffffffffda
[ 91.502372] R13: 0000000000000000 R14: ffff933fe7a66528 R15: ffff933feafed000
[ 91.502373] FS: 00007f1835488cc0(0000) GS:ffff933ff6680000(0000) knlGS:0000000000000000
[ 91.502377] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 91.502378] CR2: ffffffffffffffe2 CR3: 000000066975e006 CR4: 0000000000360ee0
[ 91.502380] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 91.502381] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 91.502381] Call Trace:
[ 91.502388] dma_buf_map_attachment+0x8c/0x100
[ 91.502396] drm_gem_prime_import_dev.part.0+0x41/0xc0 [drm]
[ 91.502403] drm_gem_prime_import_dev+0x31/0x90 [drm]
[ 91.502410] drm_gem_prime_fd_to_handle+0x177/0x1a0 [drm]
[ 91.502424] ? drm_prime_destroy_file_private+0x20/0x20 [drm]
[ 91.502431] drm_prime_fd_to_handle_ioctl+0x27/0x30 [drm]
[ 91.502437] drm_ioctl_kernel+0xae/0xf0 [drm]
[ 91.502443] drm_ioctl+0x238/0x3d0 [drm]
[ 91.502451] ? drm_prime_destroy_file_private+0x20/0x20 [drm]
[ 91.502493] nouveau_drm_ioctl+0x78/0xc0 [nouveau]
[ 91.502495] ksys_ioctl+0x8e/0xc0
[ 91.502496] __x64_sys_ioctl+0x1a/0x20
[ 91.502498] do_syscall_64+0x52/0xc0
[ 91.502499] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 91.502500] RIP: 0033:0x7f183a8d637b
[ 91.502501] Code: 0f 1e fa 48 8b 05 15 3b 0d 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e5 3a 0d 00 f7 d8 64 89 01 48
[ 91.502502] RSP: 002b:00007ffd889e89b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 91.502503] RAX: ffffffffffffffda RBX: 00007ffd889e89fc RCX: 00007f183a8d637b
[ 91.502504] RDX: 00007ffd889e89fc RSI: 00000000c00c642e RDI: 0000000000000010
[ 91.502504] RBP: 00000000c00c642e R08: 000055a4bdcb7700 R09: 00007f183a9aab80
[ 91.502505] R10: 0000000000000007 R11: 0000000000000246 R12: 0000000000000042
[ 91.502505] R13: 0000000000000010 R14: 0000000000000a00 R15: 0000000000000002
[ 91.502507] Modules linked in: intel_rapl_msr intel_rapl_common kvm_intel kvm crct10dif_pclmul ghash_clmulni_intel snd_hda_codec_generic snd_hda_codec_hdmi ledtrig_audio aesni_intel nls_iso8859_1 snd_hda_intel crypto_simd snd_intel_dspcfg snd_hda_codec cryptd snd_hda_core snd_hwdep nouveau glue_helper snd_pcm mxm_wmi wmi qxl snd_seq_midi rapl video snd_seq_midi_event drm_ttm_helper snd_rawmidi ttm snd_seq drm_kms_helper cec snd_seq_device snd_timer joydev input_leds i2c_algo_bit rc_core ucsi_ccg serio_raw typec_ucsi efi_pstore typec snd fb_sys_fops syscopyarea sysfillrect soundcore sysimgblt qemu_fw_cfg mac_hid sch_fq_codel parport_pc ppdev lp parport drm virtio_rng ip_tables x_tables autofs4 hid_generic usbhid hid lpc_ich psmouse virtio_net i2c_i801 net_failover ahci failover crc32_pclmul i2c_smbus xhci_pci libahci virtio_blk i2c_nvidia_gpu xhci_pci_renesas
[ 91.502533] CR2: ffffffffffffffe2
[ 91.502535] ---[ end trace e411a970b08dc069 ]---
[ 91.508240] RIP: 0010:drm_gem_map_dma_buf+0x43/0x100 [drm]
[ 91.508241] Code: 00 00 83 fe 03 0f 84 aa 00 00 00 48 8b 87 40 01 00 00 41 89 f5 48 85 c0 74 61 48 8b 40 38 e8 e4 10 34 c7 49 89 c4 48 8b 7b 08 <41> 8b 54 24 08 49 8b 34 24 48 8b 87 40 02 00 00 48 85 c0 74 0c 41
[ 91.508242] RSP: 0018:ffffa3d9817bfc70 EFLAGS: 00010282
[ 91.508243] RAX: ffffffffffffffda RBX: ffff933fe8164540 RCX: 0000000000000000
[ 91.508243] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff933ff21150b0
[ 91.508244] RBP: ffffa3d9817bfc88 R08: ffff933fe76da690 R09: ffffa3d9817bfb64
[ 91.508244] R10: 0000000000000042 R11: 0000000000000004 R12: ffffffffffffffda
[ 91.508245] R13: 0000000000000000 R14: ffff933fe7a66528 R15: ffff933feafed000
[ 91.508246] FS: 00007f1835488cc0(0000) GS:ffff933ff6680000(0000) knlGS:0000000000000000
[ 91.508247] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 91.508247] CR2: ffffffffffffffe2 CR3: 000000066975e006 CR4: 0000000000360ee0
[ 91.508249] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 91.508250] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Host kernel was 5.8.0 mainline kernel with vfio-pci attached to every nvidia bug and iommu group element (except PCI controller bridge).