Backtrace

BUG: kernel NULL pointer dereference, address: 0000000000000005
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0 
Oops: 0000 [#1] PREEMPT SMP NOPTI
CPU: 2 PID: 27875 Comm: Xorg Not tainted 6.2.9-300.fc38.x86_64 #1
Hardware name: Gigabyte Technology Co., Ltd. B450M S2H/B450M S2H, BIOS F41 07/22/2019
RIP: 0010:nv84_fence_sync+0x31/0x50 [nouveau]
Code: 86 90 00 00 00 48 63 86 f8 00 00 00 48 89 f9 48 89 d7 48 8b 92 10 02 00 00 8b b6 fc 00 00 00 48 c1 e0 04 49 03 80 38 10 00 00 <03> 70 04 48 8b 82 c0 00 00 00 c1 e6 04 48 03 70 20 48 8b 42 48 8b
RSP: 0018:ffffc0108153faf0 EFLAGS: 00010202
RAX: 0000000000000001 RBX: ffffc0108153fb10 RCX: ffff9bb7478a87e0
RDX: ffff9bb700c40100 RSI: 0000000000000000 RDI: ffff9bb6c5395c00
RBP: ffff9bb6c5395c00 R08: ffff9bb6e66a9488 R09: ffff9bb6c4190e40
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: ffff9bb7478a87e0 R14: 0000000000000000 R15: ffff9bb700c40100
FS:  00007f216de28ac0(0000) GS:ffff9bb8d3100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000005 CR3: 000000028ed22000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 nouveau_fence_sync+0xc5/0x180 [nouveau]
 nouveau_gem_ioctl_pushbuf+0x872/0x19e0 [nouveau]
 ? preempt_count_add+0x6a/0xa0
 ? __pfx_nouveau_gem_ioctl_pushbuf+0x10/0x10 [nouveau]
 drm_ioctl_kernel+0xc9/0x170
 drm_ioctl+0x235/0x410
 ? __pfx_nouveau_gem_ioctl_pushbuf+0x10/0x10 [nouveau]
 nouveau_drm_ioctl+0x56/0xb0 [nouveau]
 __x64_sys_ioctl+0x90/0xd0
 do_syscall_64+0x5b/0x80
 ? handle_mm_fault+0xff/0x2f0
 ? preempt_count_add+0x47/0xa0
 ? up_read+0x37/0x70
 ? do_user_addr_fault+0x1ef/0x710
 ? exc_page_fault+0x70/0x170
 entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7f216e4ef0ad
Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
RSP: 002b:00007ffd0f544fa0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000055e8a6e79728 RCX: 00007f216e4ef0ad
RDX: 00007ffd0f545050 RSI: 00000000c0406481 RDI: 0000000000000010
RBP: 00007ffd0f544ff0 R08: 0000000000000000 R09: 0000000000000000
R10: 00007ffd0f545250 R11: 0000000000000246 R12: 00007ffd0f545050
R13: 00000000c0406481 R14: 0000000000000010 R15: 000055e8a6e3d440
 </TASK>
Modules linked in: ntfs3 uinput isofs snd_seq_dummy snd_hrtimer 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_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip_set nf_tables nfnetlink qrtr sunrpc binfmt_misc vfat fat rt2800pci rt2800mmio rt2800lib rt2x00pci rt2x00mmio rt2x00lib snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio mac80211 snd_hda_codec_hdmi snd_hda_intel intel_rapl_msr snd_intel_dspcfg snd_intel_sdw_acpi intel_rapl_common edac_mce_amd snd_hda_codec kvm_amd snd_hda_core snd_hwdep libarc4 kvm cfg80211 gigabyte_wmi irqbypass snd_seq wmi_bmof rapl snd_seq_device pcspkr k10temp snd_pcm i2c_piix4 eeprom_93cx6 rfkill snd_timer snd soundcore gpio_amdpt acpi_cpufreq gpio_generic joydev loop zram nouveau crct10dif_pclmul crc32_pclmul crc32c_intel polyval_clmulni polyval_generic ghash_clmulni_intel sha512_ssse3 sp5100_tco drm_ttm_helper
 ttm uas mxm_wmi drm_display_helper ccp r8169 usb_storage video cec wmi ip6_tables ip_tables fuse
CR2: 0000000000000005