Backtrace

kernel BUG at drivers/vfio/vfio.c:759!
invalid opcode: 0000 [#1] SMP PTI
CPU: 0 PID: 170858 Comm: win10-pci.sh Tainted: P           OE     5.9.16-200.fc33.x86_64 #1
Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./X99 Extreme6/ac, BIOS P3.10 04/06/2018
RIP: 0010:vfio_iommu_group_notifier+0x292/0x351 [vfio]
Code: 0f 0b e9 4f fe ff ff 0f 1f 44 00 00 8b 43 08 85 c0 0f 84 3f fe ff ff 48 89 de 4c 89 ef e8 e6 ed ff ff 85 c0 0f 84 2c fe ff ff <0f> 0b 0f 1f 44 00 00 e9 20 fe ff ff 49 8b 45 68 48 8b 7b 10 48 8b
RSP: 0018:ffffb31304b97d28 EFLAGS: 00010282
RAX: 00000000ffffffea RBX: ffff982a056c4c00 RCX: 0000000000000000
RDX: ffff982a28d6a6c0 RSI: ffff982bbabc60b0 RDI: 0000000000000000
RBP: ffff982a056c4c00 R08: 00000000ffffffea R09: ffffffffc012ec20
R10: 0000000000000193 R11: 0000000000000000 R12: 0000000000000004
R13: ffff982bbabc60b0 R14: ffff982bba5b5678 R15: 00000000ffffffff
FS:  00007f911aed9740(0000) GS:ffff982bbfa00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000026929c7f7de CR3: 00000001283ec002 CR4: 00000000001726f0
Call Trace:
 blocking_notifier_call_chain+0x5d/0x80
 iommu_bus_notifier+0x5f/0x90
 blocking_notifier_call_chain+0x5d/0x80
 driver_bound+0x8e/0xe0
 really_probe+0x288/0x460
 driver_probe_device+0xe1/0x150
 device_driver_attach+0xa1/0xb0
 bind_store+0xba/0x120
 kernfs_fop_write+0xce/0x1b0
 vfs_write+0xc7/0x210
 ksys_write+0x4f/0xc0
 do_syscall_64+0x33/0x40
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f911afce297
Code: 0d 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
RSP: 002b:00007ffce0d770d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000000000d RCX: 00007f911afce297
RDX: 000000000000000d RSI: 0000564fe69c0ce0 RDI: 0000000000000001
RBP: 0000564fe69c0ce0 R08: 000000000000000a R09: 00007f911b0650c0
R10: 00007f911b064fc0 R11: 0000000000000246 R12: 000000000000000d
R13: 00007f911b0a1520 R14: 000000000000000d R15: 00007f911b0a1720
Modules linked in: snd_seq_dummy snd_hrtimer vhost_net vhost tap vhost_iotlb nvidia(POE) rfcomm xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nf_conntrack_tftp tun bridge stp llc rpcsec_gss_krb5 auth_rpcgss md4 nfsv4 nls_utf8 cifs nfs lockd grace dns_resolver nfs_ssc fscache libdes nft_objref nf_conntrack_netbios_ns nf_conntrack_broadcast nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_tables ebtable_nat ebtable_broute ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_mangle iptable_raw iptable_security ip_set nfnetlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter cmac bnep b43 cordic nct6775 mac80211 hwmon_vid intel_rapl_msr cfg80211 intel_rapl_common ssb sunrpc mmc_core iTCO_wdt intel_pmc_bxt iTCO_vendor_support libarc4 snd_seq_midi snd_seq_midi_event vfat fat x86_pkg_temp_thermal
 btusb intel_powerclamp btrtl coretemp rapl btbcm snd_hda_codec_realtek btintel intel_cstate snd_hda_codec_generic ledtrig_audio snd_hda_codec_hdmi intel_uncore bluetooth intel_wmi_thunderbolt uvcvideo pcspkr snd_hda_intel videobuf2_vmalloc videobuf2_memops snd_intel_dspcfg videobuf2_v4l2 videobuf2_common snd_usb_audio snd_hda_codec ecdh_generic rfkill videodev snd_hda_core snd_usbmidi_lib snd_rawmidi joydev ecc i2c_i801 snd_hwdep mc i2c_smbus snd_seq lpc_ich snd_seq_device bcma snd_pcm mei_me snd_timer snd mei soundcore binfmt_misc zram ip_tables dm_crypt amdgpu mxm_wmi iommu_v2 gpu_sched i2c_algo_bit ttm crct10dif_pclmul crc32_pclmul crc32c_intel drm_kms_helper cec ghash_clmulni_intel drm nvme alx e1000e nvme_core mdio wmi kvm_intel kvm vfio_pci vfio_virqfd irqbypass vfio_iommu_type1 vfio fuse i2c_dev ddcci(OE)