* Re: Kernel Oopses from v4l_enum_fmt
2017-12-13 22:04 ` Nicolas Dufresne
@ 2017-12-13 22:40 ` Oleksandr Ostrenko
2017-12-14 14:03 ` Sakari Ailus
1 sibling, 0 replies; 4+ messages in thread
From: Oleksandr Ostrenko @ 2017-12-13 22:40 UTC (permalink / raw)
To: Nicolas Dufresne, linux-media
[-- Attachment #1: Type: text/plain, Size: 12150 bytes --]
On 13.12.17 23:04, Nicolas Dufresne wrote:
> Le mercredi 13 décembre 2017 à 22:33 +0100, Oleksandr Ostrenko a
> écrit :
>> Dear all,
>>
>> There is an issue in v4l_enum_fmt leading to kernel panic under
>> certain
>> circumstance. It happens while I try to capture video from my TV
>> tuner.
>>
>> When I connect this USB TV tuner (WinTV HVR-1900) it gets recognized
>> just fine. However, whenever I try to capture a video from the
>> device,
>> it hangs the terminal and I end up with a lot of "Unknown
>> pixelformat
>> 0x00000000" errors from v4l_enum_fmt in dmesg that eventually lead
>> to
>> kernel panic on a machine with Linux Mint. On another machine with
>> openSUSE it does not hang but just keeps producing the error message
>> below until I stop the video acquisition. I have already tried
>> several
>> kernel versions (4.4, 4.8, 4.14) and two different distributions
>> (Mint,
>> openSUSE) but to no avail.
>>
>> Can somebody give me a hint on debugging this issue?
>> Below are sample outputs of lsusb and dmesg.
>>
>> Thanks,
>> Oleksandr
>>
>> lsusb
>>
>> Bus 001 Device 002: ID 8087:8001 Intel Corp.
>> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
>> Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
>> Bus 002 Device 002: ID 8087:0a2a Intel Corp.
>> Bus 002 Device 005: ID 2040:7300 Hauppauge
>> Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
>>
>> Relevant dmesg
>>
>> [ 515.920080] usb 2-3: new high-speed USB device number 4 using
>> xhci_hcd
>> [ 516.072041] usb 2-3: New USB device found, idVendor=2040,
>> idProduct=7300
>> [ 516.072045] usb 2-3: New USB device strings: Mfr=1, Product=2,
>> SerialNumber=3
>> [ 516.072047] usb 2-3: Product: WinTV
>> [ 516.072049] usb 2-3: Manufacturer: Hauppauge
>> [ 516.072051] usb 2-3: SerialNumber: 7300-00-F04BADA0
>> [ 516.072474] pvrusb2: Hardware description: WinTV HVR-1900 Model
>> 73xxx
>> [ 517.089290] pvrusb2: Device microcontroller firmware (re)loaded;
>> it
>> should now reset and reconnect.
>> [ 517.121228] usb 2-3: USB disconnect, device number 4
>> [ 517.121436] pvrusb2: Device being rendered inoperable
>> [ 518.908091] usb 2-3: new high-speed USB device number 5 using
>> xhci_hcd
>> [ 519.065592] usb 2-3: New USB device found, idVendor=2040,
>> idProduct=7300
>> [ 519.065597] usb 2-3: New USB device strings: Mfr=1, Product=2,
>> SerialNumber=3
>> [ 519.065600] usb 2-3: Product: WinTV
>> [ 519.065602] usb 2-3: Manufacturer: Hauppauge
>> [ 519.065605] usb 2-3: SerialNumber: 7300-00-F04BADA0
>> [ 519.066862] pvrusb2: Hardware description: WinTV HVR-1900 Model
>> 73xxx
>> [ 519.098815] pvrusb2: Binding ir_rx_z8f0811_haup to i2c address
>> 0x71.
>> [ 519.098872] pvrusb2: Binding ir_tx_z8f0811_haup to i2c address
>> 0x70.
>> [ 519.131651] cx25840 6-0044: cx25843-24 found @ 0x88 (pvrusb2_a)
>> [ 519.133234] lirc_dev: IR Remote Control driver registered, major
>> 241
>> [ 519.134192] lirc_zilog: module is from the staging directory, the
>> quality is unknown, you have been warned.
>> [ 519.134194] lirc_zilog: module is from the staging directory, the
>> quality is unknown, you have been warned.
>> [ 519.134564] Zilog/Hauppauge IR driver initializing
>> [ 519.135628] probing IR Rx on pvrusb2_a (i2c-6)
>> [ 519.135674] probe of IR Rx on pvrusb2_a (i2c-6) done. Waiting on
>> IR Tx.
>> [ 519.135678] i2c i2c-6: probe of IR Rx on pvrusb2_a (i2c-6) done
>> [ 519.135706] probing IR Tx on pvrusb2_a (i2c-6)
>> [ 519.135728] i2c i2c-6: Direct firmware load for haup-ir-
>> blaster.bin
>> failed with error -2
>> [ 519.135730] i2c i2c-6: firmware haup-ir-blaster.bin not available
>> (-2)
>> [ 519.135799] i2c i2c-6: lirc_dev: driver lirc_zilog registered at
>> minor = 0
>> [ 519.135800] i2c i2c-6: IR unit on pvrusb2_a (i2c-6) registered as
>> lirc0 and ready
>> [ 519.135802] i2c i2c-6: probe of IR Tx on pvrusb2_a (i2c-6) done
>> [ 519.135826] initialization complete
>> [ 519.140759] pvrusb2: Attached sub-driver cx25840
>> [ 519.147644] tuner: 6-0042: Tuner -1 found with type(s) Radio TV.
>> [ 519.147667] pvrusb2: Attached sub-driver tuner
>> [ 521.029446] cx25840 6-0044: loaded v4l-cx25840.fw firmware (14264
>> bytes)
>> [ 521.124582] tveeprom: Hauppauge model 73219, rev D1E9, serial#
>> 4031491488
>> [ 521.124586] tveeprom: MAC address is 00:0d:fe:4b:ad:a0
>> [ 521.124588] tveeprom: tuner model is Philips 18271_8295 (idx 149,
>> type 54)
>> [ 521.124591] tveeprom: TV standards PAL(B/G) PAL(I) SECAM(L/L')
>> PAL(D/D1/K) ATSC/DVB Digital (eeprom 0xf4)
>> [ 521.124593] tveeprom: audio processor is CX25843 (idx 37)
>> [ 521.124594] tveeprom: decoder processor is CX25843 (idx 30)
>> [ 521.124596] tveeprom: has radio, has IR receiver, has IR
>> transmitter
>> [ 521.124606] pvrusb2: Supported video standard(s) reported
>> available
>> in hardware: PAL-B/B1/D/D1/G/H/I/K;SECAM-B/D/G/H/K/K
>> [ 521.124617] pvrusb2: Device initialization completed successfully.
>> [ 521.124811] pvrusb2: registered device video0 [mpeg]
>> [ 521.124819] dvbdev: DVB: registering new adapter (pvrusb2-dvb)
>> [ 523.039178] cx25840 6-0044: loaded v4l-cx25840.fw firmware (14264
>> bytes)
>> [ 523.160593] tda829x 6-0042: setting tuner address to 60
>> [ 523.217717] tda18271 6-0060: creating new instance
>> [ 523.260592] tda18271: TDA18271HD/C1 detected @ 6-0060
>> [ 523.768592] tda829x 6-0042: type set to tda8295+18271
>> [ 533.360586] cx25840 6-0044: 0x0000 is not a valid video input!
>> [ 533.416296] usb 2-3: DVB: registering adapter 0 frontend 0 (NXP
>> TDA10048HN DVB-T)...
>> [ 533.417571] tda829x 6-0042: type set to tda8295
>> [ 533.455567] tda18271 6-0060: attaching existing instance
>> [ 591.458582] cx25840 6-0044: loaded v4l-cx25840.fw firmware (14264
>> bytes)
>> [ 595.551320] Unknown pixelformat 0x00000000
>> [ 595.551344] ------------[ cut here ]------------
>> [ 595.551363] WARNING: CPU: 2 PID: 5820 at
>
> This is not a kernel panic, but a warning.
Yes, but these messages add up rapidly in dmesg. On Mint after several
retries of capturing video (e.g., ivtv-tune -c 21 && cat /dev/video0 >
test.mpg) from the TV tuner, there were a ton of them in dmesg.
Suddenly, I got a black screen with a kernel panic and a backtrace. I
could not copy that. However, this never happened on the openSUSE machine.
> In recent code it's this
> one:
>
> https://elixir.free-electrons.com/linux/latest/source/drivers/media/v4l2-core/v4l2-ioctl.c#L1288
>
> Though, it is usually a driver issue. More information will be needed.
Ok, thanks for the tip. But what kind of information?
I checked out the source you pointed me to. So, this is a pvrusb2 device
and it should produce a MPEG2 stream (corresponding to the
V4L2_PIX_FMT_MPEG2 value there, I guess). Apparently, it is not the case
here as pixel format is just filled with zeros.
How can I determine whether it is a driver issue? Are there any debug
flags to trace calls to the driver?
Also, I saw that pixelformat is part of the v4l2_fmtdesc structure that
is passed to v4l_enum_fmt as an argument. Is it coming from the driver?
>
>
>> ../drivers/media/v4l2-core/v4l2-ioctl.c:1288
>> v4l_enum_fmt+0xcf6/0x13a0
>> [videodev]
>> [ 595.551365] Modules linked in: tda10048 tda18271 tda8290 tuner
>> lirc_zilog(C) lirc_dev rc_core cx25840 pvrusb2 tveeprom cx2341x
>> dvb_core
>> v4l2_common videodev nf_log_ipv6 xt_comment nf_log_ipv4
>> nf_log_common
>> xt_LOG xt_limit af_packet iscsi_ibft iscsi_boot_sysfs ip6t_REJECT
>> nf_reject_ipv6 nf_conntrack_ipv6 nf_defrag_ipv6 ipt_REJECT
>> nf_reject_ipv4 xt_pkttype xt_tcpudp iptable_filter ip6table_mangle
>> nf_conntrack_netbios_ns nf_conntrack_broadcast nf_conntrack_ipv4
>> nf_defrag_ipv4 ip_tables xt_conntrack nf_conntrack ip6table_filter
>> ip6_tables x_tables snd_hda_codec_hdmi snd_hda_codec_realtek
>> snd_hda_codec_generic arc4 intel_rapl xfs x86_pkg_temp_thermal
>> intel_powerclamp coretemp kvm_intel kvm libcrc32c irqbypass
>> crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc raid1 iwlmvm
>> intel_spi_platform intel_spi
>> [ 595.551436] spi_nor mtd iTCO_wdt mac80211 iTCO_vendor_support
>> snd_hda_intel snd_hda_codec snd_soc_rt5640 snd_hda_core snd_hwdep
>> snd_soc_rl6231 snd_soc_core md_mod snd_compress btusb
>> snd_pcm_dmaengine
>> iwlwifi btrtl btbcm snd_pcm btintel bluetooth aesni_intel
>> ecdh_generic
>> snd_timer battery cfg80211 aes_x86_64 snd pcspkr crypto_simd
>> glue_helper
>> rfkill cryptd i915 e1000e i2c_i801 lpc_ich ptp pps_core thermal
>> mei_me
>> drm_kms_helper fan mei drm fb_sys_fops syscopyarea sysfillrect
>> sysimgblt
>> i2c_algo_bit shpchp elan_i2c soundcore tpm_tis video tpm_tis_core
>> snd_soc_sst_acpi tpm snd_soc_sst_match gpio_lynxpoint dw_dmac
>> spi_pxa2xx_platform acpi_pad acpi_als kfifo_buf button industrialio
>> btrfs xor zstd_decompress zstd_compress xxhash raid6_pq crc32c_intel
>> nvme xhci_pci ehci_pci ehci_hcd xhci_hcd nvme_core usbcore
>> [ 595.551523] sdhci_acpi sdhci mmc_core i2c_hid sg
>> [ 595.551533] CPU: 2 PID: 5820 Comm: motv Tainted: G C
>> 4.14.2-3.gb5596a5-default #1
>> [ 595.551535] Hardware name: /NUC5i5RYB, BIOS
>> RYBDWi35.86A.0367.2017.0929.1059 09/29/2017
>> [ 595.551538] task: ffff979f823f8140 task.stack: ffffbde8826e4000
>> [ 595.551550] RIP: 0010:v4l_enum_fmt+0xcf6/0x13a0 [videodev]
>> [ 595.551552] RSP: 0018:ffffbde8826e7ca8 EFLAGS: 00010296
>> [ 595.551556] RAX: 000000000000001e RBX: ffffbde8826e7d98 RCX:
>> 0000000000000000
>> [ 595.551558] RDX: ffff979f96d16440 RSI: ffff979f96d0e2d8 RDI:
>> ffff979f96d0e2d8
>> [ 595.551560] RBP: 0000000000000000 R08: 0000000000000001 R09:
>> 0000000000000322
>> [ 595.551562] R10: ffff979f8507ab00 R11: 0000000000000000 R12:
>> ffff979f85a5a300
>> [ 595.551564] R13: ffffffffc12a1cc0 R14: ffff979f8507ab00 R15:
>> ffff979f85a5a300
>> [ 595.551567] FS: 00007ff613fb9780(0000) GS:ffff979f96d00000(0000)
>> knlGS:0000000000000000
>> [ 595.551569] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>> [ 595.551571] CR2: 00007ff60a198290 CR3: 000000041b3e6004 CR4:
>> 00000000003606e0
>> [ 595.551574] Call Trace:
>> [ 595.551590] __video_do_ioctl+0x310/0x320 [videodev]
>> [ 595.551602] ? video_usercopy+0x1ec/0x600 [videodev]
>> [ 595.551612] video_usercopy+0x174/0x600 [videodev]
>> [ 595.551623] ? v4l_enum_fmt+0x13a0/0x13a0 [videodev]
>> [ 595.551632] ? v4l_enum_fmt+0x13a0/0x13a0 [videodev]
>> [ 595.551647] pvr2_v4l2_ioctl+0x83/0x100 [pvrusb2]
>> [ 595.551658] v4l2_ioctl+0xa9/0xd0 [videodev]
>> [ 595.551665] do_vfs_ioctl+0x8d/0x5d0
>> [ 595.551670] ? __fput+0x15b/0x1d0
>> [ 595.551676] ? mntput_no_expire+0x11/0x1a0
>> [ 595.551680] SyS_ioctl+0x74/0x80
>> [ 595.551686] entry_SYSCALL_64_fastpath+0x1e/0xa9
>> [ 595.551690] RIP: 0033:0x7ff610862659
>> [ 595.551691] RSP: 002b:00007ffe84b2a078 EFLAGS: 00000246 ORIG_RAX:
>> 0000000000000010
>> [ 595.551695] RAX: ffffffffffffffda RBX: 000000000192ee20 RCX:
>> 00007ff610862659
>> [ 595.551697] RDX: 00007ffe84b2a110 RSI: 00000000c0405602 RDI:
>> 0000000000000004
>> [ 595.551699] RBP: 00007ffe84b29f80 R08: 0000000000000000 R09:
>> 0000000000000004
>> [ 595.551701] R10: 00007ff60c6c9620 R11: 0000000000000246 R12:
>> 000000000192ee20
>> [ 595.551703] R13: 0000000000000049 R14: 00007ff613fec000 R15:
>> 0000000000000000
>> [ 595.551706] Code: 3d 4f 35 31 31 0f 84 bf 05 00 00 3d 4d 54 32 31
>> 48
>> c7 c6 59 17 22 c1 0f 84 e5 f5 ff ff 89 c6 48 c7 c7 77 23 22 c1 e8 15
>> c2
>> ec c1 <0f> ff 80 7b 0c 00 0f 85 73 f3 ff ff 8b 43 2c 48 c7 c1 1e 17
>> 22
>> [ 595.551775] ---[ end trace d1089f1c30e702b9 ]---
--
Oleksandr Ostrenko, MSc.
Technische Universität Dresden
Center for Information Services and High Performance Computing (ZIH)
Department for Innovative Methods of Computing (IMC)
01062 Dresden, Germany
Phone: (+49) 351/463-38777
WWW: http://imc.zih.tu-dresden.de/imc/
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Kernel Oopses from v4l_enum_fmt
2017-12-13 22:04 ` Nicolas Dufresne
2017-12-13 22:40 ` Oleksandr Ostrenko
@ 2017-12-14 14:03 ` Sakari Ailus
1 sibling, 0 replies; 4+ messages in thread
From: Sakari Ailus @ 2017-12-14 14:03 UTC (permalink / raw)
To: Nicolas Dufresne; +Cc: Oleksandr Ostrenko, linux-media
On Wed, Dec 13, 2017 at 05:04:28PM -0500, Nicolas Dufresne wrote:
> Le mercredi 13 décembre 2017 à 22:33 +0100, Oleksandr Ostrenko a
> écrit :
> > Dear all,
> >
> > There is an issue in v4l_enum_fmt leading to kernel panic under
> > certain
> > circumstance. It happens while I try to capture video from my TV
> > tuner.
> >
> > When I connect this USB TV tuner (WinTV HVR-1900) it gets recognized
> > just fine. However, whenever I try to capture a video from the
> > device,
> > it hangs the terminal and I end up with a lot of "Unknown
> > pixelformat
> > 0x00000000" errors from v4l_enum_fmt in dmesg that eventually lead
> > to
> > kernel panic on a machine with Linux Mint. On another machine with
> > openSUSE it does not hang but just keeps producing the error message
> > below until I stop the video acquisition. I have already tried
> > several
> > kernel versions (4.4, 4.8, 4.14) and two different distributions
> > (Mint,
> > openSUSE) but to no avail.
> >
> > Can somebody give me a hint on debugging this issue?
> > Below are sample outputs of lsusb and dmesg.
> >
> > Thanks,
> > Oleksandr
> >
> > lsusb
> >
> > Bus 001 Device 002: ID 8087:8001 Intel Corp.
> > Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> > Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
> > Bus 002 Device 002: ID 8087:0a2a Intel Corp.
> > Bus 002 Device 005: ID 2040:7300 Hauppauge
> > Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> >
> > Relevant dmesg
> >
> > [ 515.920080] usb 2-3: new high-speed USB device number 4 using
> > xhci_hcd
> > [ 516.072041] usb 2-3: New USB device found, idVendor=2040,
> > idProduct=7300
> > [ 516.072045] usb 2-3: New USB device strings: Mfr=1, Product=2,
> > SerialNumber=3
> > [ 516.072047] usb 2-3: Product: WinTV
> > [ 516.072049] usb 2-3: Manufacturer: Hauppauge
> > [ 516.072051] usb 2-3: SerialNumber: 7300-00-F04BADA0
> > [ 516.072474] pvrusb2: Hardware description: WinTV HVR-1900 Model
> > 73xxx
> > [ 517.089290] pvrusb2: Device microcontroller firmware (re)loaded;
> > it
> > should now reset and reconnect.
> > [ 517.121228] usb 2-3: USB disconnect, device number 4
> > [ 517.121436] pvrusb2: Device being rendered inoperable
> > [ 518.908091] usb 2-3: new high-speed USB device number 5 using
> > xhci_hcd
> > [ 519.065592] usb 2-3: New USB device found, idVendor=2040,
> > idProduct=7300
> > [ 519.065597] usb 2-3: New USB device strings: Mfr=1, Product=2,
> > SerialNumber=3
> > [ 519.065600] usb 2-3: Product: WinTV
> > [ 519.065602] usb 2-3: Manufacturer: Hauppauge
> > [ 519.065605] usb 2-3: SerialNumber: 7300-00-F04BADA0
> > [ 519.066862] pvrusb2: Hardware description: WinTV HVR-1900 Model
> > 73xxx
> > [ 519.098815] pvrusb2: Binding ir_rx_z8f0811_haup to i2c address
> > 0x71.
> > [ 519.098872] pvrusb2: Binding ir_tx_z8f0811_haup to i2c address
> > 0x70.
> > [ 519.131651] cx25840 6-0044: cx25843-24 found @ 0x88 (pvrusb2_a)
> > [ 519.133234] lirc_dev: IR Remote Control driver registered, major
> > 241
> > [ 519.134192] lirc_zilog: module is from the staging directory, the
> > quality is unknown, you have been warned.
> > [ 519.134194] lirc_zilog: module is from the staging directory, the
> > quality is unknown, you have been warned.
> > [ 519.134564] Zilog/Hauppauge IR driver initializing
> > [ 519.135628] probing IR Rx on pvrusb2_a (i2c-6)
> > [ 519.135674] probe of IR Rx on pvrusb2_a (i2c-6) done. Waiting on
> > IR Tx.
> > [ 519.135678] i2c i2c-6: probe of IR Rx on pvrusb2_a (i2c-6) done
> > [ 519.135706] probing IR Tx on pvrusb2_a (i2c-6)
> > [ 519.135728] i2c i2c-6: Direct firmware load for haup-ir-
> > blaster.bin
> > failed with error -2
> > [ 519.135730] i2c i2c-6: firmware haup-ir-blaster.bin not available
> > (-2)
> > [ 519.135799] i2c i2c-6: lirc_dev: driver lirc_zilog registered at
> > minor = 0
> > [ 519.135800] i2c i2c-6: IR unit on pvrusb2_a (i2c-6) registered as
> > lirc0 and ready
> > [ 519.135802] i2c i2c-6: probe of IR Tx on pvrusb2_a (i2c-6) done
> > [ 519.135826] initialization complete
> > [ 519.140759] pvrusb2: Attached sub-driver cx25840
> > [ 519.147644] tuner: 6-0042: Tuner -1 found with type(s) Radio TV.
> > [ 519.147667] pvrusb2: Attached sub-driver tuner
> > [ 521.029446] cx25840 6-0044: loaded v4l-cx25840.fw firmware (14264
> > bytes)
> > [ 521.124582] tveeprom: Hauppauge model 73219, rev D1E9, serial#
> > 4031491488
> > [ 521.124586] tveeprom: MAC address is 00:0d:fe:4b:ad:a0
> > [ 521.124588] tveeprom: tuner model is Philips 18271_8295 (idx 149,
> > type 54)
> > [ 521.124591] tveeprom: TV standards PAL(B/G) PAL(I) SECAM(L/L')
> > PAL(D/D1/K) ATSC/DVB Digital (eeprom 0xf4)
> > [ 521.124593] tveeprom: audio processor is CX25843 (idx 37)
> > [ 521.124594] tveeprom: decoder processor is CX25843 (idx 30)
> > [ 521.124596] tveeprom: has radio, has IR receiver, has IR
> > transmitter
> > [ 521.124606] pvrusb2: Supported video standard(s) reported
> > available
> > in hardware: PAL-B/B1/D/D1/G/H/I/K;SECAM-B/D/G/H/K/K
> > [ 521.124617] pvrusb2: Device initialization completed successfully.
> > [ 521.124811] pvrusb2: registered device video0 [mpeg]
> > [ 521.124819] dvbdev: DVB: registering new adapter (pvrusb2-dvb)
> > [ 523.039178] cx25840 6-0044: loaded v4l-cx25840.fw firmware (14264
> > bytes)
> > [ 523.160593] tda829x 6-0042: setting tuner address to 60
> > [ 523.217717] tda18271 6-0060: creating new instance
> > [ 523.260592] tda18271: TDA18271HD/C1 detected @ 6-0060
> > [ 523.768592] tda829x 6-0042: type set to tda8295+18271
> > [ 533.360586] cx25840 6-0044: 0x0000 is not a valid video input!
> > [ 533.416296] usb 2-3: DVB: registering adapter 0 frontend 0 (NXP
> > TDA10048HN DVB-T)...
> > [ 533.417571] tda829x 6-0042: type set to tda8295
> > [ 533.455567] tda18271 6-0060: attaching existing instance
> > [ 591.458582] cx25840 6-0044: loaded v4l-cx25840.fw firmware (14264
> > bytes)
> > [ 595.551320] Unknown pixelformat 0x00000000
> > [ 595.551344] ------------[ cut here ]------------
> > [ 595.551363] WARNING: CPU: 2 PID: 5820 at
>
> This is not a kernel panic, but a warning. In recent code it's this
> one:
>
> https://elixir.free-electrons.com/linux/latest/source/drivers/media/v4l2-core/v4l2-ioctl.c#L1288
>
> Though, it is usually a driver issue. More information will be needed.
This seems a pretty clear driver bug.
In drivers/media/usb/pvrusb2/pvrusb2-v4l2.c:
static struct v4l2_fmtdesc pvr_fmtdesc [] = {
{
.index = 0,
.type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
.flags = V4L2_FMT_FLAG_COMPRESSED,
.description = "MPEG1/2",
// This should really be V4L2_PIX_FMT_MPEG, but xawtv
// breaks when I do that.
.pixelformat = 0, // V4L2_PIX_FMT_MPEG,
}
};
Maybe a xawtv bug as well?
>
>
> > ../drivers/media/v4l2-core/v4l2-ioctl.c:1288
> > v4l_enum_fmt+0xcf6/0x13a0
> > [videodev]
> > [ 595.551365] Modules linked in: tda10048 tda18271 tda8290 tuner
> > lirc_zilog(C) lirc_dev rc_core cx25840 pvrusb2 tveeprom cx2341x
> > dvb_core
> > v4l2_common videodev nf_log_ipv6 xt_comment nf_log_ipv4
> > nf_log_common
> > xt_LOG xt_limit af_packet iscsi_ibft iscsi_boot_sysfs ip6t_REJECT
> > nf_reject_ipv6 nf_conntrack_ipv6 nf_defrag_ipv6 ipt_REJECT
> > nf_reject_ipv4 xt_pkttype xt_tcpudp iptable_filter ip6table_mangle
> > nf_conntrack_netbios_ns nf_conntrack_broadcast nf_conntrack_ipv4
> > nf_defrag_ipv4 ip_tables xt_conntrack nf_conntrack ip6table_filter
> > ip6_tables x_tables snd_hda_codec_hdmi snd_hda_codec_realtek
> > snd_hda_codec_generic arc4 intel_rapl xfs x86_pkg_temp_thermal
> > intel_powerclamp coretemp kvm_intel kvm libcrc32c irqbypass
> > crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc raid1 iwlmvm
> > intel_spi_platform intel_spi
> > [ 595.551436] spi_nor mtd iTCO_wdt mac80211 iTCO_vendor_support
> > snd_hda_intel snd_hda_codec snd_soc_rt5640 snd_hda_core snd_hwdep
> > snd_soc_rl6231 snd_soc_core md_mod snd_compress btusb
> > snd_pcm_dmaengine
> > iwlwifi btrtl btbcm snd_pcm btintel bluetooth aesni_intel
> > ecdh_generic
> > snd_timer battery cfg80211 aes_x86_64 snd pcspkr crypto_simd
> > glue_helper
> > rfkill cryptd i915 e1000e i2c_i801 lpc_ich ptp pps_core thermal
> > mei_me
> > drm_kms_helper fan mei drm fb_sys_fops syscopyarea sysfillrect
> > sysimgblt
> > i2c_algo_bit shpchp elan_i2c soundcore tpm_tis video tpm_tis_core
> > snd_soc_sst_acpi tpm snd_soc_sst_match gpio_lynxpoint dw_dmac
> > spi_pxa2xx_platform acpi_pad acpi_als kfifo_buf button industrialio
> > btrfs xor zstd_decompress zstd_compress xxhash raid6_pq crc32c_intel
> > nvme xhci_pci ehci_pci ehci_hcd xhci_hcd nvme_core usbcore
> > [ 595.551523] sdhci_acpi sdhci mmc_core i2c_hid sg
> > [ 595.551533] CPU: 2 PID: 5820 Comm: motv Tainted: G C
> > 4.14.2-3.gb5596a5-default #1
> > [ 595.551535] Hardware name: /NUC5i5RYB, BIOS
> > RYBDWi35.86A.0367.2017.0929.1059 09/29/2017
> > [ 595.551538] task: ffff979f823f8140 task.stack: ffffbde8826e4000
> > [ 595.551550] RIP: 0010:v4l_enum_fmt+0xcf6/0x13a0 [videodev]
> > [ 595.551552] RSP: 0018:ffffbde8826e7ca8 EFLAGS: 00010296
> > [ 595.551556] RAX: 000000000000001e RBX: ffffbde8826e7d98 RCX:
> > 0000000000000000
> > [ 595.551558] RDX: ffff979f96d16440 RSI: ffff979f96d0e2d8 RDI:
> > ffff979f96d0e2d8
> > [ 595.551560] RBP: 0000000000000000 R08: 0000000000000001 R09:
> > 0000000000000322
> > [ 595.551562] R10: ffff979f8507ab00 R11: 0000000000000000 R12:
> > ffff979f85a5a300
> > [ 595.551564] R13: ffffffffc12a1cc0 R14: ffff979f8507ab00 R15:
> > ffff979f85a5a300
> > [ 595.551567] FS: 00007ff613fb9780(0000) GS:ffff979f96d00000(0000)
> > knlGS:0000000000000000
> > [ 595.551569] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> > [ 595.551571] CR2: 00007ff60a198290 CR3: 000000041b3e6004 CR4:
> > 00000000003606e0
> > [ 595.551574] Call Trace:
> > [ 595.551590] __video_do_ioctl+0x310/0x320 [videodev]
> > [ 595.551602] ? video_usercopy+0x1ec/0x600 [videodev]
> > [ 595.551612] video_usercopy+0x174/0x600 [videodev]
> > [ 595.551623] ? v4l_enum_fmt+0x13a0/0x13a0 [videodev]
> > [ 595.551632] ? v4l_enum_fmt+0x13a0/0x13a0 [videodev]
> > [ 595.551647] pvr2_v4l2_ioctl+0x83/0x100 [pvrusb2]
> > [ 595.551658] v4l2_ioctl+0xa9/0xd0 [videodev]
> > [ 595.551665] do_vfs_ioctl+0x8d/0x5d0
> > [ 595.551670] ? __fput+0x15b/0x1d0
> > [ 595.551676] ? mntput_no_expire+0x11/0x1a0
> > [ 595.551680] SyS_ioctl+0x74/0x80
> > [ 595.551686] entry_SYSCALL_64_fastpath+0x1e/0xa9
> > [ 595.551690] RIP: 0033:0x7ff610862659
> > [ 595.551691] RSP: 002b:00007ffe84b2a078 EFLAGS: 00000246 ORIG_RAX:
> > 0000000000000010
> > [ 595.551695] RAX: ffffffffffffffda RBX: 000000000192ee20 RCX:
> > 00007ff610862659
> > [ 595.551697] RDX: 00007ffe84b2a110 RSI: 00000000c0405602 RDI:
> > 0000000000000004
> > [ 595.551699] RBP: 00007ffe84b29f80 R08: 0000000000000000 R09:
> > 0000000000000004
> > [ 595.551701] R10: 00007ff60c6c9620 R11: 0000000000000246 R12:
> > 000000000192ee20
> > [ 595.551703] R13: 0000000000000049 R14: 00007ff613fec000 R15:
> > 0000000000000000
> > [ 595.551706] Code: 3d 4f 35 31 31 0f 84 bf 05 00 00 3d 4d 54 32 31
> > 48
> > c7 c6 59 17 22 c1 0f 84 e5 f5 ff ff 89 c6 48 c7 c7 77 23 22 c1 e8 15
> > c2
> > ec c1 <0f> ff 80 7b 0c 00 0f 85 73 f3 ff ff 8b 43 2c 48 c7 c1 1e 17
> > 22
> > [ 595.551775] ---[ end trace d1089f1c30e702b9 ]---
--
Sakari Ailus
e-mail: sakari.ailus@iki.fi
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