Arch Linux

Description:

After upgrading to 3.19.2 I'm seeing lots of errors related to v4l2. I use tvheadend and a Hauppauge WinTV-HVR2250 (saa7164 driver).

-- A snip from dmesg --
[90760.327598] WARNING: CPU: 2 PID: 21860 at drivers/media/v4l2-core/v4l2-ioctl.c:1025 v4l_querycap+0x41/0x70 [videodev]()
[90760.327598] Modules linked in: rfcomm pci_stub vboxpci(O) vboxnetflt(O) vboxnetadp(O) bnep bluetooth fuse tda18271 s5h1411 rpcsec_gss_krb5 nfsv4 dns_resolver ipt_REJECT nf_reject_ipv4 xt_tcpudp nf_conntrack_ipv4 nf_defrag_ipv4 cfg80211 rfkill xt_conntrack nf_conntrack iptable_filter hwmon_vid ip_tables x_tables hid_apple mousedev hid_generic usbhid hid iTCO_wdt iTCO_vendor_support ppdev evdev mac_hid coretemp intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp kvm_intel kvm crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel aesni_intel amdkfd aes_x86_64 amd_iommu_v2 lrw gf128mul glue_helper ablk_helper cryptd radeon saa7164 tveeprom snd_hda_codec_realtek dvb_core v4l2_common snd_hda_codec_generic psmouse snd_hda_codec_hdmi videodev serio_raw i2c_i801 snd_oxygen snd_oxygen_lib snd_mpu401_uart
[90760.327616] media snd_rawmidi snd_hda_intel i915 snd_seq_device ttm snd_hda_controller lpc_ich snd_hda_codec drm_kms_helper hwmon snd_hwdep parport_pc drm snd_pcm fan thermal battery parport intel_gtt i2c_algo_bit snd_timer shpchp i2c_core tpm_infineon video snd tpm_tis mei_me tpm soundcore mei button processor sch_fq_codel vboxdrv(O) nfsd auth_rpcgss oid_registry nfs_acl usbip_host usbip_core r8169 mii nfs lockd grace fscache sunrpc vhba(O) ext4 crc16 mbcache jbd2 sr_mod cdrom sd_mod atkbd libps2 xhci_pci ahci xhci_hcd libahci libata ehci_pci ehci_hcd scsi_mod usbcore usb_common i8042 serio
[90760.327635] CPU: 2 PID: 21860 Comm: AudioThread Tainted: G W O 3.19.2-1-ARCH #1
[90760.327636] Hardware name: Gigabyte Technology Co., Ltd. B85M-D3H/B85M-D3H, BIOS F14 09/19/2014
[90760.327637] 0000000000000000 00000000f255e3cc ffff880059f6fc28 ffffffff8155cfdf
[90760.327638] 0000000000000000 0000000000000000 ffff880059f6fc68 ffffffff81073a4a
[90760.327639] ffff880224778780 ffff880059f6fd90 0000000000000000 ffffffffa07d4140
[90760.327641] Call Trace:
[90760.327643] [<ffffffff8155cfdf>] dump_stack+0x4c/0x6e
[90760.327645] [<ffffffff81073a4a>] warn_slowpath_common+0x8a/0xc0
[90760.327647] [<ffffffff81073b7a>] warn_slowpath_null+0x1a/0x20
[90760.327650] [<ffffffffa07bc6a1>] v4l_querycap+0x41/0x70 [videodev]
[90760.327653] [<ffffffffa07bcf7c>] __video_do_ioctl+0x29c/0x320 [videodev]
[90760.327655] [<ffffffff811ddbf9>] ? terminate_walk+0x59/0x60
[90760.327656] [<ffffffff811de59a>] ? do_last.isra.35+0x1ba/0xea0
[90760.327659] [<ffffffffa07bca36>] video_usercopy+0x366/0x5f0 [videodev]
[90760.327662] [<ffffffffa07bcce0>] ? video_ioctl2+0x20/0x20 [videodev]
[90760.327665] [<ffffffffa07bccd5>] video_ioctl2+0x15/0x20 [videodev]
[90760.327668] [<ffffffffa07b88c4>] v4l2_ioctl+0x144/0x180 [videodev]
[90760.327670] [<ffffffff811e4e48>] do_vfs_ioctl+0x2f8/0x500
[90760.327672] [<ffffffff811ef592>] ? __fget+0x72/0xb0
[90760.327674] [<ffffffff811e50d1>] SyS_ioctl+0x81/0xa0
[90760.327676] [<ffffffff81562809>] system_call_fastpath+0x12/0x17
[90760.327677] ---[ end trace 7e9a352b4a4e0a1e ]---