Backtrace

BUG: kernel NULL pointer dereference, address: 0000000000000034
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 0 P4D 0 
Oops: 0002 [#1] SMP PTI
CPU: 7 PID: 1250 Comm: gdbus Not tainted 5.11.12-300.fc34.x86_64 #1
Hardware name: TOSHIBA Satellite P50t-B/VG20SQ, BIOS 1.50 12/09/2014
RIP: 0010:unlink_anon_vmas+0xce/0x1d0
Code: f0 00 00 00 48 8d 7d 08 e8 0f a5 91 00 49 8d 77 40 4c 89 f7 e8 b3 e6 fd ff 49 8b 57 40 48 85 d2 0f 85 6f ff ff ff 49 8b 47 38 <83> 68 34 01 eb a5 48 8b 04 24 48 8b 80 88 00 00 00 48 85 c0 74 04
RSP: 0018:ffff97ac41993c50 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8acf3159c2c0 RCX: 000000000000000c
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: ffff8acf48161c10 R11: 0000000000000000 R12: ffff8acf317dae10
R13: ffff8acf3159c2d0 R14: ffff8acf317dae00 R15: ffff8acf315381b8
FS:  0000000000000000(0000) GS:ffff8ad21fbc0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000034 CR3: 0000000052a10006 CR4: 00000000001706e0
Call Trace:
 free_pgtables+0x93/0x100
 exit_mmap+0xa6/0x1c0
 mmput+0x61/0x140
 do_exit+0x30c/0xac0
 ? _copy_to_iter+0x91/0x380
 ? try_to_wake_up+0x1c1/0x4f0
 ? ___sys_recvmsg+0x86/0xe0
 do_group_exit+0x33/0xa0
 get_signal+0x14f/0x8a0
 arch_do_signal_or_restart+0xf2/0x700
 ? vfs_read+0x172/0x1a0
 exit_to_user_mode_prepare+0xde/0x1b0
 syscall_exit_to_user_mode+0x18/0x40
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f2eecc389ff
Code: Unable to access opcode bytes at RIP 0x7f2eecc389d5.
RSP: 002b:00007f2edebdcc80 EFLAGS: 00000293 ORIG_RAX: 0000000000000007
RAX: 0000000000000001 RBX: 00007f2eecfae071 RCX: 00007f2eecc389ff
RDX: 00000000ffffffff RSI: 0000000000000003 RDI: 0000558d33068b20
RBP: 0000558d33068b20 R08: 0000000000000000 R09: 00007f2edebdcb10
R10: 00007ffeb9bf4080 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000003 R14: 00007f2edebdccf0 R15: 0000558d33066c70
Modules linked in: uinput snd_seq_dummy snd_hrtimer rfcomm xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nf_conntrack_tftp bridge stp llc 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 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 nf_tables nfnetlink ip6table_filter ip6_tables iptable_filter cmac bnep sunrpc vfat fat snd_hda_codec_realtek intel_rapl_msr snd_hda_codec_generic snd_hda_codec_hdmi intel_rapl_common ledtrig_audio x86_pkg_temp_thermal snd_hda_intel intel_powerclamp snd_intel_dspcfg soundwire_intel coretemp iwlmvm soundwire_generic_allocation snd_soc_core kvm_intel mac80211 snd_compress kvm snd_pcm_dmaengine uvcvideo soundwire_cadence libarc4 snd_hda_codec iTCO_wdt videobuf2_vmalloc
 videobuf2_memops intel_pmc_bxt irqbypass iTCO_vendor_support videobuf2_v4l2 snd_hda_core mei_hdcp at24 btusb rapl videobuf2_common ac97_bus intel_cstate iwlwifi btrtl pcspkr btbcm snd_hwdep btintel intel_uncore videodev uas snd_seq bluetooth toshiba_acpi mc toshiba_wmi usb_storage snd_seq_device i2c_i801 joydev sparse_keymap wmi_bmof cfg80211 industrialio ecdh_generic i2c_smbus snd_pcm ecc toshiba_bluetooth toshiba_haps lpc_ich rfkill snd_timer snd mei_me soundcore mei zram ip_tables amdgpu hid_logitech_hidpp iommu_v2 gpu_sched hid_multitouch hid_logitech_dj i915 radeon rtsx_pci_sdmmc mmc_core drm_ttm_helper crct10dif_pclmul crc32_pclmul ttm crc32c_intel i2c_algo_bit drm_kms_helper ghash_clmulni_intel cec serio_raw drm r8169 rtsx_pci wmi video fuse
CR2: 0000000000000034