Backtrace

BUG: unable to handle page fault for address: fffffb5bc0c13e48
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD cffbe067 P4D cffbe067 PUD 0 
Oops: 0000 [#1] SMP PTI
CPU: 0 PID: 25867 Comm: mandb Not tainted 5.8.15-301.fc33.x86_64 #1
Hardware name: Itautec Philco S.A. Infoway/ST 4252, BIOS F5e BI 08/22/2007
RIP: 0010:free_pages_and_swap_cache+0x3c/0xc0
Code: 53 e8 28 7e fa ff 45 85 e4 0f 8e 88 00 00 00 41 8d 44 24 ff 48 89 eb 4c 8d 74 c5 08 eb 09 48 83 c3 08 49 39 de 74 70 4c 8b 2b <49> 8b 55 08 48 8d 42 ff 83 e2 01 49 0f 44 c5 48 8b 48 08 48 8d 51
RSP: 0018:ffffb670cb19fda0 EFLAGS: 00010212
RAX: 000fffffc0080034 RBX: ffff9590df558da8 RCX: 0000000000000000
RDX: 000fffffc0080034 RSI: 00000000000001fe RDI: ffff95918c627720
RBP: ffff9590df558010 R08: ffff95918c6276a0 R09: 0000000000000002
R10: ffff95918ffc5000 R11: ffff95916339a92e R12: 00000000000001fe
R13: fffffb5bc0c13e40 R14: ffff9590df559000 R15: ffff959102ab2580
FS:  0000000000000000(0000) GS:ffff95918c600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffb5bc0c13e48 CR3: 000000002ea0a000 CR4: 00000000000006f0
Call Trace:
 tlb_finish_mmu+0x7a/0x1d0
 exit_mmap+0xb7/0x170
 mmput+0x61/0x140
 do_exit+0x2fa/0xaf0
 ? vfs_write+0x167/0x1f0
 do_group_exit+0x33/0xa0
 __x64_sys_exit_group+0x14/0x20
 do_syscall_64+0x4d/0x90
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fec606a3211
Code: Bad RIP value.
RSP: 002b:00007ffc4e6864b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000055605b3350f0 RCX: 00007fec606a3211
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffffffffff80 R09: 0000000000000000
R10: 0000000000000070 R11: 0000000000000246 R12: 0000000000000000
R13: 000055605b315ea0 R14: 0000000000000000 R15: 0000000000000005
Modules linked in: nft_objref 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 ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat iptable_mangle iptable_raw iptable_security nf_tables ip6table_filter ip6_tables iptable_filter ip_tables uinput ccm nf_conntrack_netbios_ns nf_conntrack_broadcast nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip_set nfnetlink sunrpc ath9k ath9k_common ath9k_hw mac80211 iTCO_wdt intel_pmc_bxt iTCO_vendor_support gpio_ich ppdev uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 ath videobuf2_common cfg80211 videodev joydev coretemp mc pcspkr i2c_i801 i2c_smbus snd_hda_codec_realtek rfkill libarc4 snd_hda_codec_generic snd_hda_codec_hdmi ledtrig_audio lpc_ich snd_hda_intel snd_intel_dspcfg snd_hda_codec parport_pc snd_hda_core snd_hwdep snd_seq snd_seq_device parport snd_pcm snd_timer snd soundcore acpi_cpufreq zram radeon i2c_algo_bit
 drm_kms_helper cec ttm drm r8169 serio_raw ata_generic pata_acpi fuse [last unloaded: ip_tables]
CR2: fffffb5bc0c13e48