Backtrace

BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0 
Oops: 0000 [#1] SMP PTI
CPU: 0 PID: 79140 Comm: minicom Tainted: G           OE     5.10.11-200.fc33.x86_64 #1
Hardware name: Intel Corporation NUC8i7HNK/NUC8i7HNB, BIOS HNKBLi70.86A.0029.2018.0222.1606 02/22/2018
RIP: 0010:cp210x_write_u16_reg+0x2e/0x60 [cp210x]
Code: 00 41 54 44 0f b6 e6 44 0f b7 c2 b9 41 00 00 00 53 48 89 fb 44 89 e2 48 83 ec 08 48 8b 07 48 8b 38 48 8b 83 48 03 00 00 8b 37 <44> 0f b6 08 68 88 13 00 00 6a 00 6a 00 c1 e6 08 81 ce 00 00 00 80
RSP: 0018:ffffafef4587fe00 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff996decd57000 RCX: 0000000000000041
RDX: 0000000000000005 RSI: 00000000ffffffff RDI: ffff996decd57800
RBP: ffff996e0eb10800 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000ba8 R11: 0000000000000000 R12: 0000000000000005
R13: 00000000000000fa R14: ffff996d8fec6000 R15: ffff996e0eb10800
FS:  00007f8a36f98740(0000) GS:ffff99739ec00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000002c9332003 CR4: 00000000003706f0
Call Trace:
 ? __next_timer_interrupt+0x100/0x100
 serial_break+0x39/0x60
 send_break.part.0+0xba/0xd0
 tty_ioctl+0x607/0x910
 ? selinux_file_ioctl+0x122/0x1c0
 __x64_sys_ioctl+0x83/0xb0
 do_syscall_64+0x33/0x40
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f8a3709338b
Code: 89 d8 49 8d 3c 1c 48 f7 d8 49 39 c4 72 b5 e8 1c ff ff ff 85 c0 78 ba 4c 89 e0 5b 5d 41 5c c3 f3 0f 1e fa b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d bd ba 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007ffd5dd8b188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000055c4e3edc8fc RCX: 00007f8a3709338b
RDX: 0000000000000000 RSI: 0000000000005409 RDI: 0000000000000003
RBP: 000055c4e505d220 R08: 000000000000006c R09: 000055c4e3ef18a4
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000067
R13: 000055c4e3edbd38 R14: 0000000000000044 R15: 00007ffd5dd8b4a0
Modules linked in: uas usb_storage cdc_acm snd_seq_dummy snd_hrtimer xt_CHECKSUM nf_nat_tftp nf_conntrack_tftp rfcomm tun bridge stp llc ip6t_REJECT nf_reject_ipv6 ip6t_rpfilter ipt_REJECT nf_reject_ipv4 xt_conntrack xt_MASQUERADE nf_conntrack_netbios_ns nf_conntrack_broadcast xt_CT ebtable_nat ebtable_broute 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 nfnetlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) cmac bnep sunrpc vfat fat intel_rapl_msr intel_rapl_common x86_pkg_temp_thermal intel_powerclamp coretemp snd_hda_codec_realtek kvm_intel snd_hda_codec_generic snd_hda_codec_hdmi ledtrig_audio iTCO_wdt intel_pmc_bxt ee1004 iTCO_vendor_support mei_hdcp snd_hda_intel snd_intel_dspcfg soundwire_intel soundwire_generic_allocation kvm iwlmvm snd_soc_core mac80211 uvcvideo snd_compress
 snd_pcm_dmaengine soundwire_cadence irqbypass rapl videobuf2_vmalloc intel_cstate videobuf2_memops snd_hda_codec libarc4 intel_uncore pcspkr intel_wmi_thunderbolt videobuf2_v4l2 wmi_bmof i2c_i801 snd_usb_audio iwlwifi videobuf2_common i2c_smbus btusb snd_hda_core btrtl snd_usbmidi_lib btbcm ac97_bus btintel snd_hwdep videodev snd_rawmidi bluetooth snd_seq cp210x snd_seq_device cfg80211 joydev mc snd_pcm ecdh_generic ecc mei_me snd_timer rfkill mei snd idma64 intel_pch_thermal ir_rc6_decoder soundcore rc_rc6_mce ite_cir acpi_pad binfmt_misc zram ip_tables amdgpu iommu_v2 gpu_sched ttm drm_kms_helper nvme crct10dif_pclmul crc32_pclmul crc32c_intel cec igb e1000e serio_raw nvme_core ghash_clmulni_intel dca i2c_algo_bit sdhci_pci hid_microsoft ff_memless drm cqhci sdhci mmc_core wmi video pinctrl_sunrisepoint fuse
CR2: 0000000000000000