Hey, Mike!
Any luck? Did my dumps help you out at all? Just poking to see if you had the 
chance to continue
working on this.
Cheers!

On Sun, 2019-09-22 at 15:04 -0500, Mike Isely wrote:
> Thank you!
>   -Mike
> On Sun, 22 Sep 2019, Diego Rivera wrote:
> > As requested--*Diego Rivera*
> > 
> > On Sun, Sep 22, 2019 at 1:53 PM Mike Isely <[email protected]> wrote:
> > > Ugh.  This is line-wrapped to hell-and-back.  Can you resend that as 
> > > afile attachment?
> > >   -Mike
> > > On Sun, 22 Sep 2019, Diego Rivera wrote:
> > > > This is what kern.log shows when I hot-unplug/hot-poweroff one of 
> > > > thedevices:
> > > > Sep 22 13:36:05 tvserver kernel: [  156.265825] usb 1-4: USB 
> > > > disconnect,device number 8Sep
> > > > 22 13:36:05 tvserver kernel: [  156.266059] pvrusb2: Device 
> > > > beingrendered inoperableSep 22
> > > > 13:36:05 tvserver kernel: [  156.266162] BUG: unable to handlekernel 
> > > > NULL pointer
> > > > dereference at 0000000000000520Sep 22 13:36:05 tvserver kernel: [  
> > > > 156.266299] #PF error:
> > > > [normal kernelread fault]Sep 22 13:36:05 tvserver kernel: [  
> > > > 156.266376] PGD 0 P4D 0Sep 22
> > > > 13:36:05 tvserver kernel: [  156.266424] Oops: 0000 [#1] SMP PTISep 22 
> > > > 13:36:05 tvserver
> > > > kernel: [  156.266485] CPU: 0 PID: 2190 Comm:pvrusb2-context Not 
> > > > tainted 5.0.0-29-generic
> > > > #31-UbuntuSep 22 13:36:05 tvserver kernel: [  156.266610] Hardware 
> > > > name: To Be
> > > Filled
> > > > By O.E.M. To Be Filled By O.E.M./Q1900-ITX, BIOS P1.70 03/31/2016Sep 22 
> > > > 13:36:05 tvserver
> > > > kernel: [  156.266770] RIP:0010:pvr2_v4l2_internal_check+0x47/0x70 
> > > > [pvrusb2]Sep 22 13:36:05
> > > > tvserver kernel: [  156.266867] Code: 2f e4 ff ff 48 8b
> > > 7b
> > > > 40 e8 26 e4 ff ff 48 8b 43 38 48 8b 90 20 05 00 00 48 05 20 05 00 00 48
> > > 39
> > > > d0 74 03 5b 5d c3 48 8b 43 40 <48> 8b 90 20 05 00 00 48 05 20 05 00 00 
> > > > 4839 d0 75 e7 48 89
> > > > df e8Sep 22 13:36:05 tvserver kernel: [  156.267140] RSP:
> > > 0018:ffffb4f3c262fea0
> > > > EFLAGS: 00010246Sep 22 13:36:05 tvserver kernel: [  156.267223] RAX: 
> > > > 0000000000000000
> > > RBX:
> > > > ffff9112efad8ba0 RCX: 0000000000000000Sep 22 13:36:05 tvserver kernel: 
> > > > [  156.267331] RDX:
> > > > ffff9112ee80cd20
> > > RSI:
> > > > 0000000000000000 RDI: 0000000000000000Sep 22 13:36:05 tvserver kernel: 
> > > > [  156.267439] RBP:
> > > > ffffb4f3c262fea8
> > > R08:
> > > > 0000000000000000 R09: ffff9112ed60c618Sep 22 13:36:05 tvserver kernel: 
> > > > [  156.267546] R10:
> > > > 000000000000f000
> > > R11:
> > > > 0000002462016bed R12: ffff9112ef474000Sep 22 13:36:05 tvserver kernel: 
> > > > [  156.267653] R13:
> > > > ffffffffc108ba90
> > > R14:
> > > > 0000000000000000 R15: ffff9112f36ed700Sep 22 13:36:05 tvserver kernel: 
> > > > [  156.267761] FS:
> > > 0000000000000000(0000)
> > > > GS:ffff9112f8200000(0000) knlGS:0000000000000000Sep 22 13:36:05 
> > > > tvserver kernel:
> > > > [  156.267880] CS:  0010 DS: 0000 ES:
> > > 0000
> > > > CR0: 0000000080050033Sep 22 13:36:05 tvserver kernel: [  156.267968] 
> > > > CR2: 0000000000000520
> > > CR3:
> > > > 000000014820e000 CR4: 00000000001006f0Sep 22 13:36:05 tvserver kernel: 
> > > > [  156.268074] Call
> > > > Trace:Sep 22 13:36:05 tvserver kernel: [  156.268136] 
> > > > pvr2_context_thread_func+0xc4/0x2b0
> > > > [pvrusb2]Sep 22 13:36:05 tvserver kernel: [  156.268227]  ? 
> > > > wait_woken+0x80/0x80Sep 22
> > > > 13:36:05 tvserver kernel: [  156.268290]  kthread+0x120/0x140Sep 22 
> > > > 13:36:05 tvserver
> > > > kernel: [  156.268362]  ?pvr2_context_destroy+0xc0/0xc0 [pvrusb2]Sep 22 
> > > > 13:36:05 tvserver
> > > > kernel: [  156.268449]  ?__kthread_parkme+0x70/0x70Sep 22 13:36:05 
> > > > tvserver kernel:
> > > > [  156.268518]  ret_from_fork+0x35/0x40Sep 22 13:36:05 tvserver kernel: 
> > > > [  156.268578]
> > > > Modules linked in:
> > > s5h1411
> > > > tda18271 tda8290 tuner cx25840 pvrusb2 tveeprom cx2341x 
> > > > dvb_corev4l2_common videodev media
> > > > veth xt_nat ipt_MASQUERADE xfrm_user xfrm_algobr_netfilter bridge stp 
> > > > llc xt_recent
> > > > ipt_REJECT nf_reject_ipv4 xt_limitxt_comment xt_multiport xt_conntrack 
> > > > xt_hashlimit
> > > > xt_addrtype xt_markiptable_mangle xt_tcpudp xt_CT iptable_raw 
> > > > nfnetlink_log
> > > > xt_NFLOGnf_log_ipv4 nf_log_common xt_LOG nf_conntrack_sane 
> > > > nf_conntrack_netlinknfnetlink
> > > > nf_nat_tftp nf_nat_snmp_basic nf_conntrack_snmp nf_nat_sipnf_nat_pptp 
> > > > nf_nat_irc nf_nat_h323
> > > > nf_nat_ftp nf_nat_amandanf_conntrack_tftp nf_conntrack_sip 
> > > > nf_conntrack_pptp
> > > nf_conntrack_proto_gre
> > > > nf_conntrack_netbios_ns nf_conntrack_broadcast 
> > > > nf_conntrack_ircnf_conntrack_h323
> > > > nf_conntrack_ftp ts_kmp nf_conntrack_amanda iptable_natnf_nat_ipv4 
> > > > nf_nat nf_conntrack
> > > > nf_defrag_ipv6 nf_defrag_ipv4 arc4iptable_filter bpfilter md4 cmac 
> > > > nls_utf8 cifs ccm fscache
> > > > aufs overlaynls_iso8859_1 xfs libcrc32c snd_hdmi_lpe_audio snd_pcmSep 
> > > > 22 13:36:05 tvserver
> > > > kernel: [  156.268655]  snd_seq_midisnd_seq_midi_event snd_rawmidi 
> > > > snd_seq snd_seq_device
> > > > snd_timer sndsoundcore intel_rapl intel_soc_dts_thermal 
> > > > intel_soc_dts_iosfintel_powerclamp
> > > > coretemp kvm_intel punit_atom_debug i915 joydev kvmgtcrct10dif_pclmul 
> > > > input_leds vfio_mdev
> > > > mdev crc32_pclmul vfio_iommu_type1ghash_clmulni_intel cryptd vfio 
> > > > intel_cstate kvm irqbypass
> > > > drm_kms_helperdrm hci_uart i2c_algo_bit fb_sys_fops btqca mei_txe 
> > > > syscopyarea
> > > > btrtlsysfillrect mei sysimgblt btbcm btintel bluetooth ecdh_generic
> > > rfkill_gpio
> > > > mac_hid sch_fq_codel ip_tables x_tables autofs4 
> > > > hid_logitech_hidpphid_logitech_dj
> > > > hid_generic usbhid r8169 ahci lpc_ich i2c_i801 libahcirealtek i2c_hid 
> > > > video hidSep 22
> > > > 13:36:05 tvserver kernel: [  156.270831] CR2: 0000000000000520Sep 22 
> > > > 13:36:05 tvserver
> > > > kernel: [  156.270891] ---[ end trace5d13378174849ef9 ]---Sep 22 
> > > > 13:36:05 tvserver kernel:
> > > > [  156.270988] RIP:0010:pvr2_v4l2_internal_check+0x47/0x70 [pvrusb2]Sep 
> > > > 22 13:36:05 tvserver
> > > > kernel: [  156.271089] Code: 2f e4 ff ff 48 8b
> > > 7b
> > > > 40 e8 26 e4 ff ff 48 8b 43 38 48 8b 90 20 05 00 00 48 05 20 05 00 00 48
> > > 39
> > > > d0 74 03 5b 5d c3 48 8b 43 40 <48> 8b 90 20 05 00 00 48 05 20 05 00 00 
> > > > 4839 d0 75 e7 48 89
> > > > df e8Sep 22 13:36:05 tvserver kernel: [  156.271363] RSP:
> > > 0018:ffffb4f3c262fea0
> > > > EFLAGS: 00010246Sep 22 13:36:05 tvserver kernel: [  156.271447] RAX: 
> > > > 0000000000000000
> > > RBX:
> > > > ffff9112efad8ba0 RCX: 0000000000000000Sep 22 13:36:05 tvserver kernel: 
> > > > [  156.271556] RDX:
> > > > ffff9112ee80cd20
> > > RSI:
> > > > 0000000000000000 RDI: 0000000000000000Sep 22 13:36:05 tvserver kernel: 
> > > > [  156.271665] RBP:
> > > > ffffb4f3c262fea8
> > > R08:
> > > > 0000000000000000 R09: ffff9112ed60c618Sep 22 13:36:05 tvserver kernel: 
> > > > [  156.271773] R10:
> > > > 000000000000f000
> > > R11:
> > > > 0000002462016bed R12: ffff9112ef474000Sep 22 13:36:05 tvserver kernel: 
> > > > [  156.271882] R13:
> > > > ffffffffc108ba90
> > > R14:
> > > > 0000000000000000 R15: ffff9112f36ed700Sep 22 13:36:05 tvserver kernel: 
> > > > [  156.271990] FS:
> > > 0000000000000000(0000)
> > > > GS:ffff9112f8200000(0000) knlGS:0000000000000000Sep 22 13:36:05 
> > > > tvserver kernel:
> > > > [  156.272111] CS:  0010 DS: 0000 ES:
> > > 0000
> > > > CR0: 0000000080050033Sep 22 13:36:05 tvserver kernel: [  156.272201] 
> > > > CR2: 0000000000000520
> > > CR3:
> > > > 000000014820e000 CR4: 00000000001006f0Sep 22 13:36:10 tvserver kernel: 
> > > > [  161.084276] usb 1-
> > > > 4: new high-speed
> > > USB
> > > > device number 9 using xhci_hcdSep 22 13:36:10 tvserver kernel: [  
> > > > 161.236211] usb 1-4: New
> > > > USB devicefound, idVendor=2040, idProduct=7501, bcdDevice= 8.00Sep 22 
> > > > 13:36:10 tvserver
> > > > kernel: [  161.236349] usb 1-4: New USB devicestrings: Mfr=1, 
> > > > Product=2, SerialNumber=3Sep
> > > > 22 13:36:10 tvserver kernel: [  161.236458] usb 1-4: Product: WinTVSep 
> > > > 22 13:36:10 tvserver
> > > > kernel: [  161.236516] usb 1-4: Manufacturer:HauppaugeSep 22 13:36:10 
> > > > tvserver kernel:
> > > > [  161.236584] usb 1-4: SerialNumber:7300-00-F080EDCFSep 22 13:36:10 
> > > > tvserver kernel:
> > > > [  161.239374] pvrusb2: Hardwaredescription: WinTV HVR-1950 Model 751xx
> > > > Cheers!--*Diego Rivera*
> > > > 
> > > > <
> > > https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=icon
> > > > Virus-free.www.avast.com
> > > > <
> > > https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=link
> > > > <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
> > > > On Sun, Sep 22, 2019 at 12:42 PM Mike Isely <[email protected]> wrote:
> > > > > On Sun, 22 Sep 2019, Mike Isely wrote:
> > > > > > On Sun, 14 Apr 2019, Diego Rivera wrote:
> > > > > > > Guinea pig #1 ready, sir! 😂
> > > > > > > --
> > > > > > > Diego Rivera
> > > > > > 
> > > > > > Diego:
> > > > > > Going back over this thread and comparing my recent notes, there's 
> > > > > > agood experiment I'd
> > > > > > like you to try:  Get the hardware into a statewhere you get the 
> > > > > > "Attempted to execute
> > > > > > control transfer when device
> > > not
> > > > > > ok" infinite log spew.  Once you've confirmed the scenario again,
> > > reboot
> > > > > > the host and then rename the ir-kbd-i2c.ko module to something 
> > > > > > whichdisables it.  You
> > > > > > can find this module in the following path:
> > > > > > /lib/modules/`uname -r`/krtnrl/drivers/media/i2c/
> > > > > 
> > > > > Typo correction:
> > > > > /lib/modules/`uname -r`/kernel/drivers/media/i2c/
> > > > > (fingers in wrong position on keyboard, apparently)
> > > > > 
> > > > > > A good thing to do would be to just add "-disabled" to the end of 
> > > > > > thefile name.  Then
> > > > > > run "depmod -a" to rebuild the module dependencies(should take a 
> > > > > > few seconds) and now
> > > > > > the ir-kbd-i2c module will bedisabled.  On the off-chance that it 
> > > > > > has already been
> > > > > > loaded, also
> > > run
> > > > > > "modprobe -r ir_kbd_ic2" (or just reboot again).  NOW, run that 
> > > > > > samescenario where you
> > > > > > get the log spew as mentioned above.  Is that
> > > still
> > > > > > happening?  Also, if it isn't still happening, does "modprobe 
> > > > > > -rpvrusb2" still get
> > > > > > stuck?
> > > > > > The reason I ask is because that's what I am seeing here.  
> > > > > > Thatir-kbd-i2c here is the
> > > > > > source of the endless stream of failing I2Crequests into the 
> > > > > > pvrusb2 driver.  I want to
> > > > > > make sure we're looking
> > > at
> > > > > > the same bug.  I've got roughly 3 misbehaviors on my plate right 
> > > > > > now.This is one of
> > > > > > them.
> > > > > > There was an earlier mention of a kernel panic when trying to remove
> > > the
> > > > > > pvrusb2 driver from the system.  While I am seeing kernel oopses 
> > > > > > fromthis - due to sysfs
> > > > > > doing something unexpected - it is not panicing.So I have not yet 
> > > > > > seen that specific
> > > > > > problem.  I'd like to know whatexact kernel was being run (distro / 
> > > > > > uname -r output /
> > > > > > .config wouldhelp too).
> > > > > >   -Mike
> > > > > > --
> > > > > > Mike Iselyisely @ isely (dot) netPGP: 03 54 43 4D 75 E5 CC 92 71 16 
> > > > > > 01 E2 B5 F5 C1
> > > > > > E8_______________________________________________pvrusb2 mailing 
> > > > > > [email protected]
> > > > > > http://www.isely.net/cgi-bin/mailman/listinfo/pvrusb2
> > > > > > 
> > > > > 
> > > > > --
> > > > > Mike Iselyisely @ isely (dot) netPGP: 03 54 43 4D 75 E5 CC 92 71 16 
> > > > > 01 E2 B5 F5 C1
> > > > > E8_______________________________________________pvrusb2 mailing 
> > > > > [email protected]
> > > > > http://www.isely.net/cgi-bin/mailman/listinfo/pvrusb2
> > > > > 
> > > > _______________________________________________pvrusb2 mailing 
> > > > [email protected]
> > > > http://www.isely.net/cgi-bin/mailman/listinfo/pvrusb2
> > > > 
> > > 
> > > --
> > > Mike Iselyisely @ isely (dot) netPGP: 03 54 43 4D 75 E5 CC 92 71 16 01 E2 
> > > B5 F5 C1
> > > E8_______________________________________________pvrusb2 mailing 
> > > [email protected]
> > > http://www.isely.net/cgi-bin/mailman/listinfo/pvrusb2
> > > 
-- 



Diego Rivera

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