Issues with DVB-t tuner after reboot or shutdown

    Hi,

    Just installed 9.95.4 x86_64 on my AMD system.

    After the first boot and start-up sequence I installed the following addons :-

    TVHeadend 4.2

    LCDProc

    XBMC LCDProc

    Chrome

    TVHeadend PVR Client

    DVB-T Hardware is the old sony PlayTV usb

    Everything works perfectly the first boot. I can setup TVHeadend, tune the channels and watch TV until either a reboot or power cycle, then I get kernel errors and the DVB tuners are gone and unable to get them back and end up reverting to 9.2.6. I had this same behavior with 9.95.3 as well.

    from Journctl :-

    Jun 01 11:55:33 LibreELEC kernel: RIP: 0010:dib7070_tuner_sleep+0x18/0x40 [dvb_usb_dib0700]

    Jun 01 11:55:33 LibreELEC kernel: Code: 6e d2 14 e6 5d c3 66 66 2e 0f 1f 84 00 00 00 00 00 90 0f 1f 44 00 00 48 8b 87 f8 02 00 00 55 40 0f b6 ce 31 d2 be 09 00 00 00 <48> 8b 40 38 48 89 e5 48 8b 80 18 0d 00 00 48 8b 4

    Jun 01 11:55:33 LibreELEC kernel: RSP: 0018:ffff96478dbeb938 EFLAGS: 00010246

    Jun 01 11:55:33 LibreELEC kernel: RAX: 0000000000000000 RBX: ffff964795688570 RCX: 0000000000000000

    Jun 01 11:55:33 LibreELEC kernel: RDX: 0000000000000000 RSI: 0000000000000009 RDI: ffff964795688000

    Jun 01 11:55:33 LibreELEC kernel: RBP: ffff96478dbeb980 R08: 00000000000000c0 R09: ffff964783c4aa80

    Jun 01 11:55:33 LibreELEC kernel: R10: 0000000000000246 R11: 000000000001560c R12: ffffffffc04d8580

    Jun 01 11:55:33 LibreELEC kernel: R13: ffff9647817ace00 R14: ffff964795688000 R15: ffff964783c4aa80

    Jun 01 11:55:33 LibreELEC kernel: FS: 00007fd67b74c2c0(0000) GS:ffff964898c00000(0000) knlGS:0000000000000000

    Jun 01 11:55:33 LibreELEC kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

    Jun 01 11:55:33 LibreELEC kernel: CR2: 0000000000000038 CR3: 000000010dbec000 CR4: 00000000001506b0

    Jun 01 11:55:33 LibreELEC kernel: Call Trace:

    Jun 01 11:55:33 LibreELEC kernel: ? dib0070_attach+0x81/0x380 [dib0070]

    Jun 01 11:55:33 LibreELEC kernel: dib7070p_tuner_attach+0x66/0x130 [dvb_usb_dib0700]

    Jun 01 11:55:33 LibreELEC kernel: dvb_usb_adapter_frontend_init+0xab/0x140 [dvb_usb]

    Jun 01 11:55:33 LibreELEC kernel: dvb_usb_device_init.cold+0x3bd/0x50a [dvb_usb]

    Jun 01 11:55:33 LibreELEC kernel: dib0700_probe+0x6f/0x120 [dvb_usb_dib0700]

    Jun 01 11:55:33 LibreELEC kernel: usb_probe_interface+0xf1/0x2b0

    Jun 01 11:55:33 LibreELEC kernel: really_probe+0xff/0x460

    Jun 01 11:55:33 LibreELEC kernel: driver_probe_device+0xe9/0x160

    Jun 01 11:55:33 LibreELEC kernel: device_driver_attach+0xab/0xb0

    Jun 01 11:55:33 LibreELEC kernel: __driver_attach+0x8f/0x150

    Jun 01 11:55:33 LibreELEC kernel: ? device_driver_attach+0xb0/0xb0

    Jun 01 11:55:33 LibreELEC kernel: bus_for_each_dev+0x7e/0xc0

    Jun 01 11:55:33 LibreELEC kernel: driver_attach+0x1e/0x20

    Jun 01 11:55:33 LibreELEC kernel: bus_add_driver+0x135/0x1f0

    Jun 01 11:55:33 LibreELEC kernel: driver_register+0x91/0xf0

    Jun 01 11:55:33 LibreELEC kernel: usb_register_driver+0x89/0x130

    Jun 01 11:55:33 LibreELEC kernel: ? 0xffffffffc04dc000

    Jun 01 11:55:33 LibreELEC kernel: dib0700_driver_init+0x23/0x1000 [dvb_usb_dib0700]

    Jun 01 11:55:33 LibreELEC kernel: do_one_initcall+0x48/0x1d0

    Jun 01 11:55:33 LibreELEC kernel: ? kmem_cache_alloc_trace+0xe3/0x230

    Jun 01 11:55:33 LibreELEC kernel: ? do_init_module+0x28/0x280

    Jun 01 11:55:33 LibreELEC kernel: do_init_module+0x62/0x280

    Jun 01 11:55:33 LibreELEC kernel: load_module+0x27bc/0x2b10

    Jun 01 11:55:33 LibreELEC kernel: __do_sys_finit_module+0xc2/0x120

    Jun 01 11:55:33 LibreELEC kernel: __x64_sys_finit_module+0x1a/0x20

    Jun 01 11:55:33 LibreELEC kernel: do_syscall_64+0x38/0x50

    Jun 01 11:55:33 LibreELEC kernel: entry_SYSCALL_64_after_hwframe+0x44/0xa9

    Jun 01 11:55:33 LibreELEC kernel: RIP: 0033:0x7fd67b8e2a99

    Jun 01 11:55:33 LibreELEC kernel: Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d af 43 0c 00 f

    Jun 01 11:55:33 LibreELEC kernel: RSP: 002b:00007ffdd31a2e18 EFLAGS: 00000246 ORIG_RAX: 0000000000000139

    Jun 01 11:55:33 LibreELEC kernel: RAX: ffffffffffffffda RBX: 0000000000912e70 RCX: 00007fd67b8e2a99

    Jun 01 11:55:33 LibreELEC kernel: RDX: 0000000000000000 RSI: 00007fd67ba2dbe5 RDI: 000000000000001a

    Jun 01 11:55:33 LibreELEC kernel: RBP: 0000000000020000 R08: 0000000000000000 R09: 0000000000000007

    Jun 01 11:55:33 LibreELEC kernel: R10: 000000000000001a R11: 0000000000000246 R12: 00007fd67ba2dbe5

    Jun 01 11:55:33 LibreELEC kernel: R13: 0000000000000000 R14: 000000000090bc30 R15: 0000000000912e70

    Jun 01 11:55:33 LibreELEC kernel: Modules linked in: dib7000p(O) rfkill snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio cdc_acm snd_hda_codec_hdmi rc_imon_pad k10temp snd_hda_intel snd_intel_dspcfg snd_hda_c

    Jun 01 11:55:33 LibreELEC kernel: CR2: 0000000000000038

    Jun 01 11:55:33 LibreELEC kernel: ---[ end trace 01edab34853c184e ]---

    Jun 01 11:55:33 LibreELEC kernel: RIP: 0010:dib7070_tuner_sleep+0x18/0x40 [dvb_usb_dib0700]

    Jun 01 11:55:33 LibreELEC kernel: Code: 6e d2 14 e6 5d c3 66 66 2e 0f 1f 84 00 00 00 00 00 90 0f 1f 44 00 00 48 8b 87 f8 02 00 00 55 40 0f b6 ce 31 d2 be 09 00 00 00 <48> 8b 40 38 48 89 e5 48 8b 80 18 0d 00 00 48 8b 4

    Jun 01 11:55:33 LibreELEC kernel: RSP: 0018:ffff96478dbeb938 EFLAGS: 00010246

    Jun 01 11:55:33 LibreELEC kernel: RAX: 0000000000000000 RBX: ffff964795688570 RCX: 0000000000000000

    Jun 01 11:55:33 LibreELEC kernel: RDX: 0000000000000000 RSI: 0000000000000009 RDI: ffff964795688000

    Jun 01 11:55:33 LibreELEC kernel: RBP: ffff96478dbeb980 R08: 00000000000000c0 R09: ffff964783c4aa80

    Jun 01 11:55:33 LibreELEC kernel: R10: 0000000000000246 R11: 000000000001560c R12: ffffffffc04d8580

    Jun 01 11:55:33 LibreELEC kernel: R13: ffff9647817ace00 R14: ffff964795688000 R15: ffff964783c4aa80

    Jun 01 11:55:33 LibreELEC kernel: FS: 00007fd67b74c2c0(0000) GS:ffff964898c00000(0000) knlGS:0000000000000000

    Jun 01 11:55:33 LibreELEC kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

    Jun 01 11:55:33 LibreELEC kernel: CR2: 0000000000000038 CR3: 000000010dbec000 CR4: 00000000001506b0

    Jun 01 11:55:33 LibreELEC kernel: BUG: kernel NULL pointer dereference, address: 0000000000000038

    Jun 01 11:55:33 LibreELEC systemd-udevd[395]: Worker [430] terminated by signal 9 (KILL)

    Jun 01 11:55:33 LibreELEC systemd-udevd[395]: 1-6:1.0: Worker [430] failed

    Jun 01 11:55:34 LibreELEC kernel: #PF: supervisor read access in kernel mode

    Jun 01 11:55:34 LibreELEC kernel: #PF: error_code(0x0000) - not-present page

    Jun 01 11:55:34 LibreELEC kernel: PGD 0 P4D 0

    Jun 01 11:55:34 LibreELEC kernel: Oops: 0000 [#2] SMP NOPTI

    Jun 01 11:55:34 LibreELEC kernel: CPU: 3 PID: 1040 Comm: kdvb-ad-0-fe-0 Tainted: G D O 5.10.35 #1

    Jun 01 11:55:34 LibreELEC kernel: Hardware name: System manufacturer System Product Name/TUF B450M-PLUS GAMING, BIOS 2409 12/02/2020

    Jun 01 11:55:34 LibreELEC kernel: RIP: 0010:dvb_usb_fe_wakeup+0x1d/0x90 [dvb_usb]

    Jun 01 11:55:34 LibreELEC kernel: Code: 5d c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 be 01 00 00 00 48 89 e5 41 55 41 54 49 89 fc 53 48 8b 87 f8 02 00 00 <48> 8b 58 38 48 8b 3b e8 37 f7 ff ff 49 8b 84 24 f

    Jun 01 11:55:34 LibreELEC kernel: RSP: 0018:ffff964793a8be40 EFLAGS: 00010282

    Jun 01 11:55:34 LibreELEC kernel: RAX: 0000000000000000 RBX: ffff964795688000 RCX: 0000000000000000

    Jun 01 11:55:34 LibreELEC kernel: RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff964795688000

    Jun 01 11:55:34 LibreELEC kernel: RBP: ffff964793a8be58 R08: ffff964898ce9d70 R09: 0000000000000014

    Jun 01 11:55:34 LibreELEC kernel: R10: 0000000000001d9d R11: ffffffffaad728e0 R12: ffff964795688000

    Jun 01 11:55:34 LibreELEC kernel: R13: ffff96478d962000 R14: ffff96478d9621b8 R15: ffff964795497af0

    Jun 01 11:55:34 LibreELEC kernel: FS: 0000000000000000(0000) GS:ffff964898cc0000(0000) knlGS:0000000000000000

    Jun 01 11:55:34 LibreELEC kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

    Jun 01 11:55:34 LibreELEC kernel: CR2: 0000000000000038 CR3: 0000000110bce000 CR4: 00000000001506a0

    Jun 01 11:55:34 LibreELEC kernel: Call Trace:

    Jun 01 11:55:34 LibreELEC kernel: dvb_frontend_init+0x28/0xc0 [dvb_core]

    Jun 01 11:55:34 LibreELEC kernel: dvb_frontend_thread+0x76/0x780 [dvb_core]

    Jun 01 11:55:34 LibreELEC kernel: ? __kthread_parkme+0x4c/0x70

    Jun 01 11:55:34 LibreELEC kernel: kthread+0x12f/0x150

    Jun 01 11:55:34 LibreELEC kernel: ? dvb_frontend_swzigzag+0x3f0/0x3f0 [dvb_core]

    Jun 01 11:55:34 LibreELEC kernel: ? __kthread_bind_mask+0x70/0x70

    Jun 01 11:55:34 LibreELEC kernel: ret_from_fork+0x22/0x30

    Jun 01 11:55:34 LibreELEC kernel: Modules linked in: dib7000p(O) rfkill snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio cdc_acm snd_hda_codec_hdmi rc_imon_pad k10temp snd_hda_intel snd_intel_dspcfg snd_hda_c

    Jun 01 11:55:34 LibreELEC kernel: CR2: 0000000000000038

    Jun 01 11:55:34 LibreELEC kernel: ---[ end trace 01edab34853c184f ]---

    Jun 01 11:55:34 LibreELEC kernel: RIP: 0010:dib7070_tuner_sleep+0x18/0x40 [dvb_usb_dib0700]

    Jun 01 11:55:34 LibreELEC kernel: Code: 6e d2 14 e6 5d c3 66 66 2e 0f 1f 84 00 00 00 00 00 90 0f 1f 44 00 00 48 8b 87 f8 02 00 00 55 40 0f b6 ce 31 d2 be 09 00 00 00 <48> 8b 40 38 48 89 e5 48 8b 80 18 0d 00 00 48 8b 4

    Jun 01 11:55:34 LibreELEC kernel: RSP: 0018:ffff96478dbeb938 EFLAGS: 00010246

    Jun 01 11:55:34 LibreELEC kernel: RAX: 0000000000000000 RBX: ffff964795688570 RCX: 0000000000000000

    Jun 01 11:55:34 LibreELEC kernel: RDX: 0000000000000000 RSI: 0000000000000009 RDI: ffff964795688000

    Jun 01 11:55:34 LibreELEC kernel: RBP: ffff96478dbeb980 R08: 00000000000000c0 R09: ffff964783c4aa80

    Jun 01 11:55:34 LibreELEC kernel: R10: 0000000000000246 R11: 000000000001560c R12: ffffffffc04d8580

    Jun 01 11:55:34 LibreELEC kernel: R13: ffff9647817ace00 R14: ffff964795688000 R15: ffff964783c4aa80

    Jun 01 11:55:34 LibreELEC kernel: FS: 0000000000000000(0000) GS:ffff964898cc0000(0000) knlGS:0000000000000000

    Jun 01 11:55:34 LibreELEC kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

    Jun 01 11:55:34 LibreELEC kernel: CR2: 0000000000000038 CR3: 0000000110bce000 CR4: 00000000001506a0

    Output from lsmod :-

    LibreELEC:/var/log # lsmod

    Module Size Used by

    8021q 24576 0

    dib7000p 36864 1

    rfkill 24576 1

    snd_hda_codec_realtek 118784 1

    snd_hda_codec_generic 73728 1 snd_hda_codec_realtek

    ledtrig_audio 16384 1 snd_hda_codec_generic

    cdc_acm 36864 2

    snd_hda_codec_hdmi 61440 1

    rc_imon_pad 16384 0

    k10temp 16384 0

    snd_hda_intel 45056 0

    snd_intel_dspcfg 20480 1 snd_hda_intel

    snd_hda_codec 114688 4 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek

    snd_hda_core 73728 5 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek

    snd_hwdep 16384 1 snd_hda_codec

    dvb_usb_dib0700 155648 2

    dib3000mc 20480 1 dvb_usb_dib0700

    dib0070 20480 2 dvb_usb_dib0700

    dib7000m 24576 1 dvb_usb_dib0700

    dibx000_common 16384 3 dib7000p,dib7000m,dib3000mc

    dib0090 36864 1 dvb_usb_dib0700

    dvb_usb 24576 1 dvb_usb_dib0700

    dvb_core 131072 2 dib7000p,dvb_usb

    videobuf2_vmalloc 20480 1 dvb_core

    videobuf2_memops 20480 1 videobuf2_vmalloc

    videobuf2_common 57344 1 dvb_core

    videodev 208896 1 videobuf2_common

    mc 45056 4 videodev,dvb_usb,dvb_core,videobuf2_common

    imon 36864 1

    fuse 114688 3

    dmesg

    [ 7.113209] dvb-usb: found a 'Sony PlayTV' in warm state.

    [ 7.113298] dvb-usb: will pass the complete MPEG2 transport stream to the software demuxer.

    [ 7.118939] dvbdev: DVB: registering new adapter (Sony PlayTV)

    [ 7.118943] usb 1-6: media controller created

    [ 7.119113] dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered.

    [ 7.781362] usb 1-6: DVB: registering adapter 0 frontend 0 (DiBcom 7000PC)...

    [ 7.781374] dvbdev: dvb_create_media_entity: media entity 'DiBcom 7000PC' registered.

    [ 7.781520] BUG: kernel NULL pointer dereference, address: 0000000000000038

    [ 7.781705] #PF: supervisor read access in kernel mode

    [ 7.781853] #PF: error_code(0x0000) - not-present page

    [ 7.782008] PGD 10dbaa067 P4D 10dbaa067 PUD 10dbab067 PMD 0

    [ 7.782185] Oops: 0000 [#1] SMP NOPTI

    [ 7.782268] CPU: 0 PID: 430 Comm: systemd-udevd Tainted: G O 5.10.35 #1

    [ 7.782427] Hardware name: System manufacturer System Product Name/TUF B450M-PLUS GAMING, BIOS 2409 12/02/2020

    [ 7.782635] RIP: 0010:dib7070_tuner_sleep+0x18/0x40 [dvb_usb_dib0700]

    [ 7.782765] Code: 6e d2 14 e6 5d c3 66 66 2e 0f 1f 84 00 00 00 00 00 90 0f 1f 44 00 00 48 8b 87 f8 02 00 00 55 40 0f b6 ce 31 d2 be 09 00 00 00 <48> 8b 40 38 48 89 e5 48 8b 80 18 0d 00 00 48 8b 40 30 e8 31 d2 14

    [ 7.783142] RSP: 0018:ffff96478dbeb938 EFLAGS: 00010246

    [ 7.783247] RAX: 0000000000000000 RBX: ffff964795688570 RCX: 0000000000000000

    [ 7.783389] RDX: 0000000000000000 RSI: 0000000000000009 RDI: ffff964795688000

    [ 7.783531] RBP: ffff96478dbeb980 R08: 00000000000000c0 R09: ffff964783c4aa80

    [ 7.783674] R10: 0000000000000246 R11: 000000000001560c R12: ffffffffc04d8580

    [ 7.783816] R13: ffff9647817ace00 R14: ffff964795688000 R15: ffff964783c4aa80

    [ 7.783959] FS: 00007fd67b74c2c0(0000) GS:ffff964898c00000(0000) knlGS:0000000000000000

    [ 7.784121] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

    [ 7.784235] CR2: 0000000000000038 CR3: 000000010dbec000 CR4: 00000000001506b0

    [ 7.784390] Call Trace:

    [ 7.784444] ? dib0070_attach+0x81/0x380 [dib0070]

    [ 7.784544] dib7070p_tuner_attach+0x66/0x130 [dvb_usb_dib0700]

    [ 7.784665] dvb_usb_adapter_frontend_init+0xab/0x140 [dvb_usb]

    [ 7.784785] dvb_usb_device_init.cold+0x3bd/0x50a [dvb_usb]

    [ 7.784901] dib0700_probe+0x6f/0x120 [dvb_usb_dib0700]

    [ 7.785009] usb_probe_interface+0xf1/0x2b0

    [ 7.785095] really_probe+0xff/0x460

    [ 7.785168] driver_probe_device+0xe9/0x160

    [ 7.785252] device_driver_attach+0xab/0xb0

    [ 7.785337] __driver_attach+0x8f/0x150

    [ 7.785414] ? device_driver_attach+0xb0/0xb0

    [ 7.785502] bus_for_each_dev+0x7e/0xc0

    [ 7.785579] driver_attach+0x1e/0x20

    [ 7.785652] bus_add_driver+0x135/0x1f0

    [ 7.785729] driver_register+0x91/0xf0

    [ 7.785805] usb_register_driver+0x89/0x130

    [ 7.785889] ? 0xffffffffc04dc000

    [ 7.785959] dib0700_driver_init+0x23/0x1000 [dvb_usb_dib0700]

    [ 7.786078] do_one_initcall+0x48/0x1d0

    [ 7.786157] ? kmem_cache_alloc_trace+0xe3/0x230

    [ 7.786252] ? do_init_module+0x28/0x280

    [ 7.786332] do_init_module+0x62/0x280

    [ 7.786407] load_module+0x27bc/0x2b10

    [ 7.786485] __do_sys_finit_module+0xc2/0x120

    [ 7.786574] __x64_sys_finit_module+0x1a/0x20

    [ 7.786664] do_syscall_64+0x38/0x50

    [ 7.786738] entry_SYSCALL_64_after_hwframe+0x44/0xa9

    [ 7.786839] RIP: 0033:0x7fd67b8e2a99

    [ 7.786912] Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d af 43 0c 00 f7 d8 64 89 01 48

    [ 7.787289] RSP: 002b:00007ffdd31a2e18 EFLAGS: 00000246 ORIG_RAX: 0000000000000139

    [ 7.787441] RAX: ffffffffffffffda RBX: 0000000000912e70 RCX: 00007fd67b8e2a99

    [ 7.787585] RDX: 0000000000000000 RSI: 00007fd67ba2dbe5 RDI: 000000000000001a

    [ 7.787731] RBP: 0000000000020000 R08: 0000000000000000 R09: 0000000000000007

    [ 7.787873] R10: 000000000000001a R11: 0000000000000246 R12: 00007fd67ba2dbe5

    [ 7.788015] R13: 0000000000000000 R14: 000000000090bc30 R15: 0000000000912e70

    [ 7.788158] Modules linked in: dib7000p(O) rfkill snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio cdc_acm snd_hda_codec_hdmi rc_imon_pad k10temp snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hda_core s

    nd_hwdep dvb_usb_dib0700(+) dib3000mc(O) dib0070(O) dib7000m(O) dibx000_common(O) dib0090(O) dvb_usb dvb_core(O) videobuf2_vmalloc(O) videobuf2_memops(O) videobuf2_common(O) videodev(O) mc(O) imon fuse

    [ 7.788915] CR2: 0000000000000038

    [ 7.788995] ---[ end trace 01edab34853c184e ]---

    [ 7.789141] RIP: 0010:dib7070_tuner_sleep+0x18/0x40 [dvb_usb_dib0700]

    [ 7.789346] Code: 6e d2 14 e6 5d c3 66 66 2e 0f 1f 84 00 00 00 00 00 90 0f 1f 44 00 00 48 8b 87 f8 02 00 00 55 40 0f b6 ce 31 d2 be 09 00 00 00 <48> 8b 40 38 48 89 e5 48 8b 80 18 0d 00 00 48 8b 40 30 e8 31 d2 14

    [ 7.789964] RSP: 0018:ffff96478dbeb938 EFLAGS: 00010246

    [ 7.790140] RAX: 0000000000000000 RBX: ffff964795688570 RCX: 0000000000000000

    [ 7.790376] RDX: 0000000000000000 RSI: 0000000000000009 RDI: ffff964795688000

    [ 7.790612] RBP: ffff96478dbeb980 R08: 00000000000000c0 R09: ffff964783c4aa80

    [ 7.790849] R10: 0000000000000246 R11: 000000000001560c R12: ffffffffc04d8580

    [ 7.791090] R13: ffff9647817ace00 R14: ffff964795688000 R15: ffff964783c4aa80

    [ 7.798812] FS: 00007fd67b74c2c0(0000) GS:ffff964898c00000(0000) knlGS:0000000000000000

    [ 7.806548] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

    [ 7.814315] CR2: 0000000000000038 CR3: 000000010dbec000 CR4: 00000000001506b0

    [ 7.819817] BUG: kernel NULL pointer dereference, address: 0000000000000038

    [ 7.830133] #PF: supervisor read access in kernel mode

    [ 7.837867] #PF: error_code(0x0000) - not-present page

    [ 7.845563] PGD 0 P4D 0

    [ 7.853115] Oops: 0000 [#2] SMP NOPTI

    [ 7.860562] CPU: 3 PID: 1040 Comm: kdvb-ad-0-fe-0 Tainted: G D O 5.10.35 #1

    [ 7.867912] Hardware name: System manufacturer System Product Name/TUF B450M-PLUS GAMING, BIOS 2409 12/02/2020

    [ 7.875183] RIP: 0010:dvb_usb_fe_wakeup+0x1d/0x90 [dvb_usb]

    [ 7.882413] Code: 5d c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 be 01 00 00 00 48 89 e5 41 55 41 54 49 89 fc 53 48 8b 87 f8 02 00 00 <48> 8b 58 38 48 8b 3b e8 37 f7 ff ff 49 8b 84 24 f8 02 00 00 4c 8b

    [ 7.890140] RSP: 0018:ffff964793a8be40 EFLAGS: 00010282

    [ 7.897837] RAX: 0000000000000000 RBX: ffff964795688000 RCX: 0000000000000000

    [ 7.905618] RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff964795688000

    [ 7.913393] RBP: ffff964793a8be58 R08: ffff964898ce9d70 R09: 0000000000000014

    [ 7.921147] R10: 0000000000001d9d R11: ffffffffaad728e0 R12: ffff964795688000

    [ 7.928857] R13: ffff96478d962000 R14: ffff96478d9621b8 R15: ffff964795497af0

    [ 7.936541] FS: 0000000000000000(0000) GS:ffff964898cc0000(0000) knlGS:0000000000000000

    [ 7.944279] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

    [ 7.952000] CR2: 0000000000000038 CR3: 0000000110bce000 CR4: 00000000001506a0

    [ 7.959768] Call Trace:

    [ 7.967480] dvb_frontend_init+0x28/0xc0 [dvb_core]

    [ 7.975292] dvb_frontend_thread+0x76/0x780 [dvb_core]

    [ 7.983032] ? __kthread_parkme+0x4c/0x70

    [ 7.990751] kthread+0x12f/0x150

    [ 7.998458] ? dvb_frontend_swzigzag+0x3f0/0x3f0 [dvb_core]

    [ 8.006245] ? __kthread_bind_mask+0x70/0x70

    [ 8.014045] ret_from_fork+0x22/0x30

    [ 8.021849] Modules linked in: dib7000p(O) rfkill snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio cdc_acm snd_hda_codec_hdmi rc_imon_pad k10temp snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hda_core s

    nd_hwdep dvb_usb_dib0700(+) dib3000mc(O) dib0070(O) dib7000m(O) dibx000_common(O) dib0090(O) dvb_usb dvb_core(O) videobuf2_vmalloc(O) videobuf2_memops(O) videobuf2_common(O) videodev(O) mc(O) imon fuse

    [ 8.039018] CR2: 0000000000000038

    [ 8.047709] ---[ end trace 01edab34853c184f ]---

    [ 8.056438] RIP: 0010:dib7070_tuner_sleep+0x18/0x40 [dvb_usb_dib0700]

    [ 8.065262] Code: 6e d2 14 e6 5d c3 66 66 2e 0f 1f 84 00 00 00 00 00 90 0f 1f 44 00 00 48 8b 87 f8 02 00 00 55 40 0f b6 ce 31 d2 be 09 00 00 00 <48> 8b 40 38 48 89 e5 48 8b 80 18 0d 00 00 48 8b 40 30 e8 31 d2 14

    [ 8.074586] RSP: 0018:ffff96478dbeb938 EFLAGS: 00010246

    [ 8.083883] RAX: 0000000000000000 RBX: ffff964795688570 RCX: 0000000000000000

    [ 8.093241] RDX: 0000000000000000 RSI: 0000000000000009 RDI: ffff964795688000

    [ 8.102577] RBP: ffff96478dbeb980 R08: 00000000000000c0 R09: ffff964783c4aa80

    [ 8.111923] R10: 0000000000000246 R11: 000000000001560c R12: ffffffffc04d8580

    [ 8.121302] R13: ffff9647817ace00 R14: ffff964795688000 R15: ffff964783c4aa80

    [ 8.130695] FS: 0000000000000000(0000) GS:ffff964898cc0000(0000) knlGS:0000000000000000

    [ 8.140198] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

    [ 8.149718] CR2: 0000000000000038 CR3: 0000000110bce000 CR4: 00000000001506a0