Hey there,
same issues as him, though in my case, it just happens randomly.
I did the journals, as petsam suggested. Here are the results.
Jan 06 20:54:40 kmail[1590682]: Error loading text-to-speech plug-in "speechd"
Jan 06 20:58:22 akonadi_imap_resource[1590731]: attempting client step after doneflag
Jan 06 22:07:34 kernel: BUG: kernel NULL pointer dereference, address: 0000000000000020
Jan 06 22:07:34 kernel: #PF: supervisor read access in kernel mode
Jan 06 22:07:34 kernel: #PF: error_code(0x0000) - not-present page
Jan 06 22:07:34 kernel: Oops: 0000 [#1] PREEMPT SMP PTI
Jan 06 22:07:34 kernel: CPU: 1 PID: 702 Comm: irq/133-nvidia Tainted: P OE 5.10.1-103-tkg-bmq #1
Jan 06 22:07:34 kernel: Hardware name: Gigabyte Technology Co., Ltd. To be filled by O.E.M./Z170-HD3-CF, BIOS F6
02/23/2016
Jan 06 22:07:34 kernel: RIP: 0010:_nv027527rm+0x9/0x90 [nvidia]
Jan 06 22:07:34 kernel: Code: 90 ff e8 ea b0 00 00 31 c0 48 83 c4 08 c3 31 c0 eb bf 66 2e 0f 1f 84 00 00 00 00 0
0 0f 1f 44 00 00 48 83 ec 08 48 85 ff 74 57 <48> 8b 17 31 c0 48 85 d2 75 0e eb 2b 0f 1f 00 48 8b 52 10 48 85 d2
Jan 06 22:07:34 kernel: RSP: 0018:ffffb11280ed3c00 EFLAGS: 00010202
Jan 06 22:07:34 kernel: RAX: 0000000000000020 RBX: 0000000000000020 RCX: 0000000000000010
Jan 06 22:07:34 kernel: RDX: ffff8aa51a22e388 RSI: ffffffffffffffff RDI: 0000000000000020
Jan 06 22:07:34 kernel: RBP: ffff8aa324b6a9d0 R08: ffffffffc1a6a510 R09: ffff8aa324b6a9b0
Jan 06 22:07:34 kernel: R10: ffffffffc06b55f0 R11: ffff8aa3072c1808 R12: 0000000000000020
Jan 06 22:07:34 kernel: R13: 0000000000000000 R14: ffff8aa324b6ab38 R15: ffff8aa324b6ac78
Jan 06 22:07:34 kernel: FS: 0000000000000000(0000) GS:ffff8aa666480000(0000) knlGS:0000000000000000
Jan 06 22:07:34 kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jan 06 22:07:34 kernel: CR2: 0000000000000020 CR3: 00000002521cc005 CR4: 00000000003706e0
Jan 06 22:07:34 kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Jan 06 22:07:34 kernel: DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Jan 06 22:07:34 kernel: Call Trace:
Jan 06 22:07:34 kernel: ? _nv029950rm+0x1b/0x90 [nvidia]
Jan 06 22:07:34 kernel: ? _nv025474rm+0x18/0x60 [nvidia]
Jan 06 22:07:34 kernel: ? _nv011691rm+0x13d/0x1c0 [nvidia]
Jan 06 22:07:34 kernel: ? _nv000083rm+0x12f/0x1a0 [nvidia]
Jan 06 22:07:34 kernel: ? _nv036719rm+0xc3/0x350 [nvidia]
Jan 06 22:07:34 kernel: ? _nv036718rm+0x5c/0x70 [nvidia]
Jan 06 22:07:34 kernel: ? _nv011615rm+0x78/0xd0 [nvidia]
Jan 06 22:07:34 kernel: ? _nv011615rm+0x1a/0xd0 [nvidia]
Jan 06 22:07:34 kernel: ? _nv024757rm+0x251/0x3e0 [nvidia]
Jan 06 22:07:34 kernel: ? _nv024705rm+0x1f/0xf0 [nvidia]
Jan 06 22:07:34 kernel: ? _nv015452rm+0xcb/0x370 [nvidia]
Jan 06 22:07:34 kernel: ? _nv026076rm+0x10/0x10 [nvidia]
Jan 06 22:07:34 kernel: ? _nv027734rm+0x273/0xdc0 [nvidia]
Jan 06 22:07:34 kernel: ? _nv007566rm+0x155/0x270 [nvidia]
Jan 06 22:07:34 kernel: ? _nv027742rm+0x8d/0x180 [nvidia]
Jan 06 22:07:34 kernel: ? _nv000712rm+0xa9/0x200 [nvidia]
Jan 06 22:07:34 kernel: ? disable_irq_nosync+0x10/0x10
Jan 06 22:07:34 kernel: ? rm_isr_bh+0x1c/0x60 [nvidia]
Jan 06 22:07:34 kernel: ? nvidia_isr_kthread_bh+0x1b/0x40 [nvidia]
Jan 06 22:07:34 kernel: ? irq_thread_fn+0x20/0x60
Jan 06 22:07:34 kernel: ? irq_thread+0xf5/0x1a0
Jan 06 22:07:34 kernel: ? irq_finalize_oneshot.part.0+0xe0/0xe0
Jan 06 22:07:34 kernel: ? irq_thread_check_affinity+0xd0/0xd0
Jan 06 22:07:34 kernel: ? kthread+0x142/0x160
Jan 06 22:07:34 kernel: ? __kthread_bind_mask+0x60/0x60
Jan 06 22:07:34 kernel: ? ret_from_fork+0x22/0x30
Jan 06 22:07:34 kernel: Modules linked in: hidp rfcomm tun xt_tcpudp snd_usb_audio snd_usbmidi_lib snd_rawmidi s
nd_seq_device mc cmac algif_hash algif_skcipher af_alg bnep btusb btrtl btbcm btintel bluetooth joydev ecdh_gene
ric ecc ip6table_filter ip6_tables zram iptable_filter input_leds mousedev rfkill hid_steam hid_generic usbhid h
id ext4 nls_iso8859_1 nls_cp437 vfat fat crc16 mbcache jbd2 intel_rapl_msr intel_rapl_common x86_pkg_temp_therma
l intel_powerclamp kvm_intel snd_hda_codec_realtek kvm snd_hda_codec_generic snd_hda_codec_hdmi ledtrig_audio sn
d_hda_intel iTCO_wdt snd_intel_dspcfg soundwire_intel soundwire_generic_allocation soundwire_cadence snd_hda_cod
ec intel_pmc_bxt ee1004 iTCO_vendor_support irqbypass snd_hda_core crct10dif_pclmul crc32_pclmul ghash_clmulni_i
ntel intel_wmi_thunderbolt ppdev snd_hwdep aesni_intel soundwire_bus crypto_simd cryptd uas glue_helper rapl r81
69 usb_storage intel_cstate realtek snd_soc_core intel_uncore mdio_devres of_mdio snd_compress fixed_phy ac97_bu
s
Jan 06 22:07:34 kernel: snd_pcm_dmaengine libphy i2c_i801 snd_pcm snd_timer i2c_smbus snd soundcore intel_pch_t
hermal parport_pc parport wmi evdev mac_hid uinput coretemp msr crypto_user fuse ip_tables x_tables btrfs blake2
b_generic libcrc32c crc32c_generic xor raid6_pq crc32c_intel xhci_pci xhci_pci_renesas sr_mod cdrom xhci_hcd nvi
dia_uvm(POE) nvidia_drm(POE) nvidia_modeset(POE) nvidia(POE) drm agpgart
Jan 06 22:07:34 kernel: CR2: 0000000000000020
Jan 06 22:07:34 kernel: RIP: 0010:_nv027527rm+0x9/0x90 [nvidia]
Jan 06 22:07:34 kernel: Code: 90 ff e8 ea b0 00 00 31 c0 48 83 c4 08 c3 31 c0 eb bf 66 2e 0f 1f 84 00 00 00 00 0
0 0f 1f 44 00 00 48 83 ec 08 48 85 ff 74 57 <48> 8b 17 31 c0 48 85 d2 75 0e eb 2b 0f 1f 00 48 8b 52 10 48 85 d2
Jan 06 22:07:34 kernel: RSP: 0018:ffffb11280ed3c00 EFLAGS: 00010202
Jan 06 22:07:34 kernel: RAX: 0000000000000020 RBX: 0000000000000020 RCX: 0000000000000010
Jan 06 22:07:34 kernel: RDX: ffff8aa51a22e388 RSI: ffffffffffffffff RDI: 0000000000000020
Jan 06 22:07:34 kernel: RBP: ffff8aa324b6a9d0 R08: ffffffffc1a6a510 R09: ffff8aa324b6a9b0
Jan 06 22:07:34 kernel: R10: ffffffffc06b55f0 R11: ffff8aa3072c1808 R12: 0000000000000020
Jan 06 22:07:34 kernel: R13: 0000000000000000 R14: ffff8aa324b6ab38 R15: ffff8aa324b6ac78
Jan 06 22:07:34 kernel: FS: 0000000000000000(0000) GS:ffff8aa666480000(0000) knlGS:0000000000000000
Jan 06 22:07:34 kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jan 06 22:07:34 kernel: CR2: 0000000000000020 CR3: 00000002521cc005 CR4: 00000000003706e0
Jan 06 22:07:34 kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Jan 06 22:07:34 kernel: DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Jan 06 22:07:34 kernel: BUG: kernel NULL pointer dereference, address: 0000000000000689
Jan 06 22:07:34 kernel: #PF: supervisor write access in kernel mode
Jan 06 22:07:34 kernel: #PF: error_code(0x0002) - not-present page
Jan 06 22:07:34 kernel: Oops: 0002 [#2] PREEMPT SMP PTI
Jan 06 22:07:34 kernel: CPU: 1 PID: 702 Comm: irq/133-nvidia Tainted: P D OE 5.10.1-103-tkg-bmq #1
Jan 06 22:07:34 kernel: Hardware name: Gigabyte Technology Co., Ltd. To be filled by O.E.M./Z170-HD3-CF, BIOS F6
02/23/2016
Jan 06 22:07:34 kernel: RIP: 0010:mutex_lock+0x10/0x20
Jan 06 22:07:34 kernel: Code: 03 31 c0 c3 eb d4 0f 1f 40 00 0f 1f 44 00 00 be 02 00 00 00 e9 61 fa ff ff 90 0f 1
f 44 00 00 31 c0 65 48 8b 14 25 c0 7b 01 00 <f0> 48 0f b1 17 75 01 c3 eb d6 66 0f 1f 44 00 00 0f 1f 44 00 00 41
Jan 06 22:07:34 kernel: RSP: 0018:ffffb11280ed3e30 EFLAGS: 00010246
Jan 06 22:07:34 kernel: RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
Jan 06 22:07:34 kernel: RDX: ffff8aa30252b800 RSI: 0000000000000000 RDI: 0000000000000689
Jan 06 22:07:34 kernel: RBP: 0000000000000689 R08: 000000000000000f R09: 0000000000000000
Jan 06 22:07:34 kernel: R10: ffff8aa322f55400 R11: ffffffffb54c9801 R12: ffff8aa30252bd24
Jan 06 22:07:34 kernel: R13: 0000000000000001 R14: 0000000000000001 R15: ffff8aa30252b800
Jan 06 22:07:34 kernel: FS: 0000000000000000(0000) GS:ffff8aa666480000(0000) knlGS:0000000000000000
Jan 06 22:07:34 kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jan 06 22:07:34 kernel: CR2: 0000000000000689 CR3: 00000002521cc005 CR4: 00000000003706e0
Jan 06 22:07:34 kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Jan 06 22:07:34 kernel: DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Jan 06 22:07:34 kernel: Call Trace:
Jan 06 22:07:34 kernel: perf_event_exit_task+0x30/0x440
Jan 06 22:07:34 kernel: ? put_cpu_partial+0x92/0x140
Jan 06 22:07:34 kernel: ? kfree+0x402/0x430
Jan 06 22:07:34 kernel: do_exit+0x352/0xa40
Jan 06 22:07:34 kernel: ? task_work_run+0x5c/0x90
Jan 06 22:07:34 kernel: ? do_exit+0x342/0xa40
Jan 06 22:07:34 kernel: ? kthread+0x142/0x160
Jan 06 22:07:34 kernel: ? rewind_stack_do_exit+0x17/0x17
Jan 06 22:07:34 kernel: Modules linked in: hidp rfcomm tun xt_tcpudp snd_usb_audio snd_usbmidi_lib snd_rawmidi s
nd_seq_device mc cmac algif_hash algif_skcipher af_alg bnep btusb btrtl btbcm btintel bluetooth joydev ecdh_gene
ric ecc ip6table_filter ip6_tables zram iptable_filter input_leds mousedev rfkill hid_steam hid_generic usbhid h
id ext4 nls_iso8859_1 nls_cp437 vfat fat crc16 mbcache jbd2 intel_rapl_msr intel_rapl_common x86_pkg_temp_therma
l intel_powerclamp kvm_intel snd_hda_codec_realtek kvm snd_hda_codec_generic snd_hda_codec_hdmi ledtrig_audio sn
d_hda_intel iTCO_wdt snd_intel_dspcfg soundwire_intel soundwire_generic_allocation soundwire_cadence snd_hda_cod
ec intel_pmc_bxt ee1004 iTCO_vendor_support irqbypass snd_hda_core crct10dif_pclmul crc32_pclmul ghash_clmulni_i
ntel intel_wmi_thunderbolt ppdev snd_hwdep aesni_intel soundwire_bus crypto_simd cryptd uas glue_helper rapl r81
69 usb_storage intel_cstate realtek snd_soc_core intel_uncore mdio_devres of_mdio snd_compress fixed_phy ac97_bu
s
Jan 06 22:07:34 kernel: snd_pcm_dmaengine libphy i2c_i801 snd_pcm snd_timer i2c_smbus snd soundcore intel_pch_t
hermal parport_pc parport wmi evdev mac_hid uinput coretemp msr crypto_user fuse ip_tables x_tables btrfs blake2
b_generic libcrc32c crc32c_generic xor raid6_pq crc32c_intel xhci_pci xhci_pci_renesas sr_mod cdrom xhci_hcd nvi
dia_uvm(POE) nvidia_drm(POE) nvidia_modeset(POE) nvidia(POE) drm agpgart
Jan 06 22:07:34 kernel: CR2: 0000000000000689
Jan 06 22:07:34 kernel: RIP: 0010:_nv027527rm+0x9/0x90 [nvidia]
Jan 06 22:07:34 kernel: Code: 90 ff e8 ea b0 00 00 31 c0 48 83 c4 08 c3 31 c0 eb bf 66 2e 0f 1f 84 00 00 00 00 0
0 0f 1f 44 00 00 48 83 ec 08 48 85 ff 74 57 <48> 8b 17 31 c0 48 85 d2 75 0e eb 2b 0f 1f 00 48 8b 52 10 48 85 d2
Jan 06 22:07:34 kernel: RSP: 0018:ffffb11280ed3c00 EFLAGS: 00010202
Jan 06 22:07:34 kernel: RAX: 0000000000000020 RBX: 0000000000000020 RCX: 0000000000000010
Jan 06 22:07:34 kernel: RDX: ffff8aa51a22e388 RSI: ffffffffffffffff RDI: 0000000000000020
Jan 06 22:07:34 kernel: RBP: ffff8aa324b6a9d0 R08: ffffffffc1a6a510 R09: ffff8aa324b6a9b0
Jan 06 22:07:34 kernel: R10: ffffffffc06b55f0 R11: ffff8aa3072c1808 R12: 0000000000000020
Jan 06 22:07:34 kernel: R13: 0000000000000000 R14: ffff8aa324b6ab38 R15: ffff8aa324b6ac78
Jan 06 22:07:34 kernel: FS: 0000000000000000(0000) GS:ffff8aa666480000(0000) knlGS:0000000000000000
Jan 06 22:07:34 kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jan 06 22:07:34 kernel: CR2: 0000000000000689 CR3: 00000002521cc005 CR4: 00000000003706e0
Jan 06 22:07:34 kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Jan 06 22:07:34 kernel: DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Jan 06 22:07:34 kernel: Fixing recursive fault but reboot is needed!
I didn't post the second journal because the last log in there was from an hour before the crash.