[  177.465342] das16jr_init_one: Pacer clock set to 1 MHz
[  177.465346] das16jr_init_one: Analog input modes set to 16 single-ended.
[  177.466311] BUG: kernel NULL pointer dereference, address: 00000000000002d8
[  177.466314] #PF: supervisor read access in kernel mode
[  177.466316] #PF: error_code(0x0000) - not-present page
[  177.466317] PGD 0 P4D 0 
[  177.466320] Oops: 0000 [#1] SMP NOPTI
[  177.466323] CPU: 0 PID: 5 Comm: kworker/0:0 Tainted: P           OE     5.4.0-110-generic #124-Ubuntu
[  177.466325] Hardware name: MICRO-STAR INTERNATIONAL CO.,LTD MS-7596/760GM -E51 (MS-7596), BIOS V1.4 04/09/2010
[  177.466330] Workqueue: events work_for_cpu_fn
[  177.466335] RIP: 0010:dma_alloc_attrs+0x6/0x60
[  177.466338] Code: b8 ff ff ff ff 48 85 d2 74 05 e8 75 15 ce 00 5d c3 48 8b 05 ac a5 e1 01 48 85 c0 75 dc e8 d2 0a 00 00 5d c3 0f 1f 44 00 00 55 <48> 8b 87 28 02 00 00 83 e1 f8 4c 8b 8f 38 02 00 00 48 89 e5 48 85
[  177.466340] RSP: 0018:ffffacd80003fd80 EFLAGS: 00010246
[  177.466342] RAX: 0000000000000000 RBX: 000000000000d000 RCX: 0000000000000a20
[  177.466343] RDX: ffffffffc19468e8 RSI: 0000000000010000 RDI: 00000000000000b0
[  177.466344] RBP: ffffacd80003fe10 R08: 0000000000000000 R09: 0000000000000000
[  177.466346] R10: 0000000000000000 R11: 0000000000000000 R12: 000000000000d800
[  177.466347] R13: ffffffffc19468e0 R14: 0000000000000000 R15: 000000000000d400
[  177.466349] FS:  0000000000000000(0000) GS:ffff973d6fa00000(0000) knlGS:0000000000000000
[  177.466350] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  177.466352] CR2: 00000000000002d8 CR3: 0000000226e76000 CR4: 00000000000006f0
[  177.466353] Call Trace:
[  177.466361]  ? das16jr_init_one.cold+0x25e/0x34a [pcim_das16jr]
[  177.466365]  local_pci_probe+0x48/0x80
[  177.466369]  ? __schedule+0x2eb/0x740
[  177.466372]  work_for_cpu_fn+0x1a/0x30
[  177.466375]  process_one_work+0x1eb/0x3b0
[  177.466377]  worker_thread+0x4d/0x400
[  177.466380]  kthread+0x104/0x140
[  177.466383]  ? process_one_work+0x3b0/0x3b0
[  177.466385]  ? kthread_park+0x90/0x90
[  177.466387]  ret_from_fork+0x35/0x40
[  177.466389] Modules linked in: pcim_das16jr(OE+) ip6table_filter ip6_tables iptable_filter bpfilter vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) binfmt_misc nls_iso8859_1 snd_hda_codec_hdmi nvidia_uvm(POE) snd_hda_codec_realtek snd_hda_codec_generic joydev ledtrig_audio input_leds snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hda_core snd_hwdep nvidia_drm(POE) snd_pcm nvidia_modeset(POE) edac_mce_amd snd_seq_midi nvidia(POE) snd_seq_midi_event kvm_amd snd_rawmidi ccp kvm snd_seq serio_raw snd_seq_device snd_timer wmi_bmof k10temp drm_kms_helper snd fb_sys_fops syscopyarea sysfillrect sysimgblt soundcore mac_hid sch_fq_codel ipmi_devintf ipmi_msghandler msr videodev mc parport_pc ppdev lp parport drm ip_tables x_tables autofs4 hid_logitech_hidpp hid_logitech_dj hid_generic usbhid pata_acpi hid psmouse pata_atiixp i2c_piix4 r8169 ahci libahci realtek wmi
[  177.466418] CR2: 00000000000002d8
[  177.466420] ---[ end trace b1e2cbeae25c4eaa ]---
[  177.466423] RIP: 0010:dma_alloc_attrs+0x6/0x60
[  177.466425] Code: b8 ff ff ff ff 48 85 d2 74 05 e8 75 15 ce 00 5d c3 48 8b 05 ac a5 e1 01 48 85 c0 75 dc e8 d2 0a 00 00 5d c3 0f 1f 44 00 00 55 <48> 8b 87 28 02 00 00 83 e1 f8 4c 8b 8f 38 02 00 00 48 89 e5 48 85
[  177.466426] RSP: 0018:ffffacd80003fd80 EFLAGS: 00010246
[  177.466428] RAX: 0000000000000000 RBX: 000000000000d000 RCX: 0000000000000a20
[  177.466429] RDX: ffffffffc19468e8 RSI: 0000000000010000 RDI: 00000000000000b0
[  177.466430] RBP: ffffacd80003fe10 R08: 0000000000000000 R09: 0000000000000000
[  177.466432] R10: 0000000000000000 R11: 0000000000000000 R12: 000000000000d800
[  177.466433] R13: ffffffffc19468e0 R14: 0000000000000000 R15: 000000000000d400
[  177.466434] FS:  0000000000000000(0000) GS:ffff973d6fa00000(0000) knlGS:0000000000000000
[  177.466436] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  177.466437] CR2: 00000000000002d8 CR3: 0000000226e76000 CR4: 00000000000006f0