[   66.621815] BUG: kernel NULL pointer dereference, address: 0000000000000050
[   66.621819] #PF: supervisor read access in kernel mode
[   66.621821] #PF: error_code(0x0000) - not-present page
[   66.621822] PGD 83a009067 P4D 83a009067 PUD 83d914067 PMD 0
[   66.621825] Oops: 0000 [#1] SMP
[   66.621827] CPU: 38 PID: 5960 Comm: soong_ui Not tainted 5.4.41+ #1
[   66.621829] Hardware name: Gigabyte Technology Co., Ltd. X399 DESIGNARE EX/X399 DESIGNARE EX-CF, BIOS F11e 09/17/2018
[   66.621833] RIP: 0010:__alloc_pages_nodemask+0x2ca/0x1720
[   66.621834] Code: 77 12 00 00 c6 84 24 d0 00 00 00 00 48 39 9c 24 b8 00 00 00 0f 85 54 12 00 00 48 8b 84 24 c0 00 00 00 44 8b 7c 24 04 48 8b 00 <48> 8b 40 50 48 89 84 24 88 00 00 00 44 89 f8 25 00 06 00 00 3d 00
[   66.621835] RSP: 0000:ffff88881f517c80 EFLAGS: 00010246
[   66.621836] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000850
[   66.621836] RDX: 0000000000000410 RSI: 0000000000000478 RDI: 0000000000000000
[   66.621837] RBP: 0000000000000081 R08: 0000000000000618 R09: 0000000000000680
[   66.621837] R10: 00000000000005b0 R11: 0000000000000548 R12: 00000000003c24ca
[   66.621838] R13: 0000000000000009 R14: 0000000000000081 R15: 00000000003c24ca
[   66.621839] FS:  00007f67179ff700(0000) GS:ffff88905df80000(0000) knlGS:0000000000000000
[   66.621840] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   66.621840] CR2: 0000000000000050 CR3: 000000083d8af000 CR4: 00000000003506e0
[   66.621841] Call Trace:
[   66.621843]  ? __alloc_pages_nodemask+0x198/0x1720
[   66.621846]  ? cpumask_next_and+0x19/0x20
[   66.621848]  ? smp_call_function_many+0x216/0x260
[   66.621849]  ? on_each_cpu_cond_mask+0xab/0x130
[   66.621851]  ? alloc_pages_vma+0x2ae/0x490
[   66.621852]  ? do_huge_pmd_anonymous_page+0x12b/0x5f0
[   66.621854]  ? handle_mm_fault+0xc45/0x1590
[   66.621855]  ? __do_page_fault+0x262/0x4a0
[   66.621857]  ? page_fault+0x2f/0x40
[   66.621858] Modules linked in: xt_CHECKSUM iptable_mangle xt_MASQUERADE xt_conntrack ipt_REJECT nf_reject_ipv4 bridge stp llc ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter xt_tcpudp xt_REDIRECT iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 bpfilter iwlmvm mac80211 edac_mce_amd iwlwifi cfg80211 kvm_amd wmi_bmof mxm_wmi k10temp mac_hid sch_fq_codel nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables autofs4 btrfs raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq multipath linear hid_generic usbhid i2c_piix4 igb ahci dca libahci gpio_amdpt wmi gpio_generic
[   66.621883] CR2: 0000000000000050
[   66.621884] ---[ end trace a7f642e2cb99fc50 ]---
[   66.621885] RIP: 0010:__alloc_pages_nodemask+0x2ca/0x1720
[   66.621886] Code: 77 12 00 00 c6 84 24 d0 00 00 00 00 48 39 9c 24 b8 00 00 00 0f 85 54 12 00 00 48 8b 84 24 c0 00 00 00 44 8b 7c 24 04 48 8b 00 <48> 8b 40 50 48 89 84 24 88 00 00 00 44 89 f8 25 00 06 00 00 3d 00
[   66.621887] RSP: 0000:ffff88881f517c80 EFLAGS: 00010246
[   66.621887] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000850
[   66.621888] RDX: 0000000000000410 RSI: 0000000000000478 RDI: 0000000000000000
[   66.621888] RBP: 0000000000000081 R08: 0000000000000618 R09: 0000000000000680
[   66.621889] R10: 00000000000005b0 R11: 0000000000000548 R12: 00000000003c24ca
[   66.621889] R13: 0000000000000009 R14: 0000000000000081 R15: 00000000003c24ca
[   66.621890] FS:  00007f67179ff700(0000) GS:ffff88905df80000(0000) knlGS:0000000000000000
[   66.621891] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   66.621891] CR2: 0000000000000050 CR3: 000000083d8af000 CR4: 00000000003506e0