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Warning in dmesg HVR-1600 [SOLVED]
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Tony0945
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Joined: 25 Jul 2006
Posts: 5127
Location: Illinois, USA

PostPosted: Fri Jun 12, 2015 3:24 pm    Post subject: Warning in dmesg HVR-1600 [SOLVED] Reply with quote

Does anyone know what this dmesg warning means?

Quote:
[ 40.747735] cx18-0: Registered device video1 for encoder MPEG (64 x 32.00 kB)
[ 40.747744] DVB: registering new adapter (cx18)
[ 40.900858] tda18271 6-0060: creating new instance
[ 40.908666] TDA18271HD/C2 detected @ 6-0060
[ 40.983769] cx18-0: loaded v4l-cx23418-cpu.fw firmware (158332 bytes)
[ 41.175604] cx18-0: loaded v4l-cx23418-apu.fw firmware V00120000 (141200 bytes)
[ 41.182117] cx18-0: FW version: 0.0.74.0 (Release 2007/03/12)
[ 41.247830] cx18 0000:04:02.0: DVB: registering adapter 0 frontend 0 (Samsung S5H1411 QAM/8VSB Frontend)...
[ 41.248126] cx18-0: DVB Frontend registered
[ 41.248131] cx18-0: Registered DVB adapter0 for TS (32 x 32.00 kB)
[ 41.248237] cx18-0: Registered device video33 for encoder YUV (20 x 101.25 kB)
[ 41.248312] cx18-0: Registered device vbi1 for encoder VBI (20 x 51984 bytes)
[ 41.248622] cx18-0: Registered device video25 for encoder PCM audio (256 x 4.00 kB)
[ 41.248626] cx18-0: Initialized card: Hauppauge HVR-1600
[ 41.248660] cx18: End initialization
[ 41.253959] cx18-alsa: module loading...
[ 42.175867] cx18-0 843: loaded v4l-cx23418-dig.fw firmware (16382 bytes)
[ 42.207588] cx18-0 843: verified load of v4l-cx23418-dig.fw firmware (16382 bytes)
[ 44.052999] ------------[ cut here ]------------
[ 44.053019] WARNING: CPU: 0 PID: 4077 at drivers/media/v4l2-core/v4l2-ioctl.c:1025 v4l_querycap+0x41/0x52()
[ 44.053022] Modules linked in: cx18_alsa s5h1411 cs5345 ivtv_alsa wm8775 tuner cx25840 cx18 ivtv videobuf_vmalloc videobuf_core tveeprom cx2341x ipv6 f71882fg cfg80211 snd_hda_codec_hdmi hid_logitech_hidpp hid_logitech_dj snd_hda_codec_realtek snd_hda_codec_generic radeon snd_hda_intel snd_hda_controller e1000e k10temp snd_hda_codec ptp snd_pcm pps_core drm_kms_helper snd_timer snd wmi acpi_cpufreq processor soundcore ttm thermal_sys ohci_pci button hwmon xts gf128mul aes_x86_64 sha256_generic hid_sunplus hid_sony hid_samsung hid_pl hid_petalynx hid_gyration usbhid ohci_hcd usb_storage ehci_pci ehci_hcd scsi_transport_fc
[ 44.053102] CPU: 0 PID: 4077 Comm: v4l_id Not tainted 4.0.5-gentoo #1
[ 44.053106] Hardware name: MICRO-STAR INTERNATIONAL CO.,LTD MS-7549/785GTM-E45 (MS-7549), BIOS V8.1 10/23/2009
[ 44.053109] 0000000000000000 0000000000000009 ffffffff8143be1e 0000000000000000
[ 44.053116] ffffffff81033c31 ffff8800b172fe08 ffffffff8136b8e7 ffff8800bad69700
[ 44.053122] ffff8800b172fdf8 ffffffff816cbc40 0000000000000000 ffff8800b172fd00
[ 44.053127] Call Trace:
[ 44.053138] [<ffffffff8143be1e>] ? dump_stack+0x40/0x50
[ 44.053145] [<ffffffff81033c31>] ? warn_slowpath_common+0x93/0xab
[ 44.053152] [<ffffffff8136b8e7>] ? v4l_querycap+0x41/0x52
[ 44.053159] [<ffffffff8136b8e7>] ? v4l_querycap+0x41/0x52
[ 44.053165] [<ffffffff8136d13b>] ? __video_do_ioctl+0x171/0x263
[ 44.053171] [<ffffffff8136ceda>] ? video_usercopy+0x22a/0x30e
[ 44.053176] [<ffffffff8136cfca>] ? video_ioctl2+0xc/0xc
[ 44.053184] [<ffffffff81368eaa>] ? v4l2_ioctl+0x69/0xdd
[ 44.053192] [<ffffffff810cad87>] ? do_vfs_ioctl+0x360/0x424
[ 44.053199] [<ffffffff810b9d52>] ? kmem_cache_free+0xe1/0xe5
[ 44.053205] [<ffffffff810bc6c0>] ? do_sys_open+0x1b3/0x1c5
[ 44.053212] [<ffffffff810cae7e>] ? SyS_ioctl+0x33/0x58
[ 44.053219] [<ffffffff81440132>] ? system_call_fastpath+0x12/0x17
[ 44.053223] ---[ end trace cfde87d08f6ff6cd ]---


Last edited by Tony0945 on Thu Jul 30, 2015 10:55 pm; edited 1 time in total
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depontius
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Joined: 05 May 2004
Posts: 3509

PostPosted: Fri Jun 12, 2015 5:51 pm    Post subject: Reply with quote

I have a pair of HVR-1600's which I used up until a few years ago. (I have a HDHomeRun Prime, now.) I never saw a message like this, and I had both NTSC and QAM sides of the card running. Your error doesn't look to be in the driver proper, rather in the ioctl processing of v4l-core. Of course it's likely that the driver is causing v4l-core to crash.
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Tony0945
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Joined: 25 Jul 2006
Posts: 5127
Location: Illinois, USA

PostPosted: Thu Jul 30, 2015 10:55 pm    Post subject: Reply with quote

I'm marking this as solved, although I still don't know the cause.

I was experimenting with mdev and noticed the error was gone and I only had expected messages about the HVR-1600 and cx18. I reinstalled eudev and the error message came back!
Switched back to mdev and the error is gone again. I conclude that there is a bug in the current eudev and mdev is a workaround.
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