[pvrusb2] Ability to fully reset a PVRUSB2 Device

Mike Isely isely at isely.net
Sun Sep 22 14:53:27 CDT 2019 

Ugh.  This is line-wrapped to hell-and-back.  Can you resend that as a 
file attachment?

  -Mike

On Sun, 22 Sep 2019, Diego Rivera wrote:

> This is what kern.log shows when I hot-unplug/hot-poweroff one of the
> devices:
> 
> Sep 22 13:36:05 tvserver kernel: [  156.265825] usb 1-4: USB disconnect,
> device number 8
> Sep 22 13:36:05 tvserver kernel: [  156.266059] pvrusb2: Device being
> rendered inoperable
> Sep 22 13:36:05 tvserver kernel: [  156.266162] BUG: unable to handle
> kernel NULL pointer dereference at 0000000000000520
> Sep 22 13:36:05 tvserver kernel: [  156.266299] #PF error: [normal kernel
> read fault]
> Sep 22 13:36:05 tvserver kernel: [  156.266376] PGD 0 P4D 0
> Sep 22 13:36:05 tvserver kernel: [  156.266424] Oops: 0000 [#1] SMP PTI
> Sep 22 13:36:05 tvserver kernel: [  156.266485] CPU: 0 PID: 2190 Comm:
> pvrusb2-context Not tainted 5.0.0-29-generic #31-Ubuntu
> Sep 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 03/31/2016
> Sep 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 48
> 39 d0 75 e7 48 89 df e8
> Sep 22 13:36:05 tvserver kernel: [  156.267140] RSP: 0018:ffffb4f3c262fea0
> EFLAGS: 00010246
> Sep 22 13:36:05 tvserver kernel: [  156.267223] RAX: 0000000000000000 RBX:
> ffff9112efad8ba0 RCX: 0000000000000000
> Sep 22 13:36:05 tvserver kernel: [  156.267331] RDX: ffff9112ee80cd20 RSI:
> 0000000000000000 RDI: 0000000000000000
> Sep 22 13:36:05 tvserver kernel: [  156.267439] RBP: ffffb4f3c262fea8 R08:
> 0000000000000000 R09: ffff9112ed60c618
> Sep 22 13:36:05 tvserver kernel: [  156.267546] R10: 000000000000f000 R11:
> 0000002462016bed R12: ffff9112ef474000
> Sep 22 13:36:05 tvserver kernel: [  156.267653] R13: ffffffffc108ba90 R14:
> 0000000000000000 R15: ffff9112f36ed700
> Sep 22 13:36:05 tvserver kernel: [  156.267761] FS:  0000000000000000(0000)
> GS:ffff9112f8200000(0000) knlGS:0000000000000000
> Sep 22 13:36:05 tvserver kernel: [  156.267880] CS:  0010 DS: 0000 ES: 0000
> CR0: 0000000080050033
> Sep 22 13:36:05 tvserver kernel: [  156.267968] CR2: 0000000000000520 CR3:
> 000000014820e000 CR4: 00000000001006f0
> Sep 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+0x80/0x80
> Sep 22 13:36:05 tvserver kernel: [  156.268290]  kthread+0x120/0x140
> Sep 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+0x70/0x70
> Sep 22 13:36:05 tvserver kernel: [  156.268518]  ret_from_fork+0x35/0x40
> Sep 22 13:36:05 tvserver kernel: [  156.268578] Modules linked in: s5h1411
> tda18271 tda8290 tuner cx25840 pvrusb2 tveeprom cx2341x dvb_core
> v4l2_common videodev media veth xt_nat ipt_MASQUERADE xfrm_user xfrm_algo
> br_netfilter bridge stp llc xt_recent ipt_REJECT nf_reject_ipv4 xt_limit
> xt_comment xt_multiport xt_conntrack xt_hashlimit xt_addrtype xt_mark
> iptable_mangle xt_tcpudp xt_CT iptable_raw nfnetlink_log xt_NFLOG
> nf_log_ipv4 nf_log_common xt_LOG nf_conntrack_sane nf_conntrack_netlink
> nfnetlink nf_nat_tftp nf_nat_snmp_basic nf_conntrack_snmp nf_nat_sip
> nf_nat_pptp nf_nat_irc nf_nat_h323 nf_nat_ftp nf_nat_amanda
> nf_conntrack_tftp nf_conntrack_sip nf_conntrack_pptp nf_conntrack_proto_gre
> nf_conntrack_netbios_ns nf_conntrack_broadcast nf_conntrack_irc
> nf_conntrack_h323 nf_conntrack_ftp ts_kmp nf_conntrack_amanda iptable_nat
> nf_nat_ipv4 nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 arc4
> iptable_filter bpfilter md4 cmac nls_utf8 cifs ccm fscache aufs overlay
> nls_iso8859_1 xfs libcrc32c snd_hdmi_lpe_audio snd_pcm
> Sep 22 13:36:05 tvserver kernel: [  156.268655]  snd_seq_midi
> snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device snd_timer snd
> soundcore intel_rapl intel_soc_dts_thermal intel_soc_dts_iosf
> intel_powerclamp coretemp kvm_intel punit_atom_debug i915 joydev kvmgt
> crct10dif_pclmul input_leds vfio_mdev mdev crc32_pclmul vfio_iommu_type1
> ghash_clmulni_intel cryptd vfio intel_cstate kvm irqbypass drm_kms_helper
> drm hci_uart i2c_algo_bit fb_sys_fops btqca mei_txe syscopyarea btrtl
> sysfillrect mei sysimgblt btbcm btintel bluetooth ecdh_generic rfkill_gpio
> mac_hid sch_fq_codel ip_tables x_tables autofs4 hid_logitech_hidpp
> hid_logitech_dj hid_generic usbhid r8169 ahci lpc_ich i2c_i801 libahci
> realtek i2c_hid video hid
> Sep 22 13:36:05 tvserver kernel: [  156.270831] CR2: 0000000000000520
> Sep 22 13:36:05 tvserver kernel: [  156.270891] ---[ end trace
> 5d13378174849ef9 ]---
> 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 48
> 39 d0 75 e7 48 89 df e8
> Sep 22 13:36:05 tvserver kernel: [  156.271363] RSP: 0018:ffffb4f3c262fea0
> EFLAGS: 00010246
> Sep 22 13:36:05 tvserver kernel: [  156.271447] RAX: 0000000000000000 RBX:
> ffff9112efad8ba0 RCX: 0000000000000000
> Sep 22 13:36:05 tvserver kernel: [  156.271556] RDX: ffff9112ee80cd20 RSI:
> 0000000000000000 RDI: 0000000000000000
> Sep 22 13:36:05 tvserver kernel: [  156.271665] RBP: ffffb4f3c262fea8 R08:
> 0000000000000000 R09: ffff9112ed60c618
> Sep 22 13:36:05 tvserver kernel: [  156.271773] R10: 000000000000f000 R11:
> 0000002462016bed R12: ffff9112ef474000
> Sep 22 13:36:05 tvserver kernel: [  156.271882] R13: ffffffffc108ba90 R14:
> 0000000000000000 R15: ffff9112f36ed700
> Sep 22 13:36:05 tvserver kernel: [  156.271990] FS:  0000000000000000(0000)
> GS:ffff9112f8200000(0000) knlGS:0000000000000000
> Sep 22 13:36:05 tvserver kernel: [  156.272111] CS:  0010 DS: 0000 ES: 0000
> CR0: 0000000080050033
> Sep 22 13:36:05 tvserver kernel: [  156.272201] CR2: 0000000000000520 CR3:
> 000000014820e000 CR4: 00000000001006f0
> Sep 22 13:36:10 tvserver kernel: [  161.084276] usb 1-4: new high-speed USB
> device number 9 using xhci_hcd
> Sep 22 13:36:10 tvserver kernel: [  161.236211] usb 1-4: New USB device
> found, idVendor=2040, idProduct=7501, bcdDevice= 8.00
> Sep 22 13:36:10 tvserver kernel: [  161.236349] usb 1-4: New USB device
> strings: Mfr=1, Product=2, SerialNumber=3
> Sep 22 13:36:10 tvserver kernel: [  161.236458] usb 1-4: Product: WinTV
> Sep 22 13:36:10 tvserver kernel: [  161.236516] usb 1-4: Manufacturer:
> Hauppauge
> Sep 22 13:36:10 tvserver kernel: [  161.236584] usb 1-4: SerialNumber:
> 7300-00-F080EDCF
> Sep 22 13:36:10 tvserver kernel: [  161.239374] pvrusb2: Hardware
> description: WinTV HVR-1950 Model 751xx
> 
> Cheers!
> --
> *Diego Rivera*
> 
> 
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> 
> On Sun, Sep 22, 2019 at 12:42 PM Mike Isely <isely at isely.net> 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 a
> > > good experiment I'd like you to try:  Get the hardware into a state
> > > where 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 which
> > > disables 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 the
> > > file name.  Then run "depmod -a" to rebuild the module dependencies
> > > (should take a few seconds) and now the ir-kbd-i2c module will be
> > > disabled.  On the off-chance that it has already been loaded, also run
> > > "modprobe -r ir_kbd_ic2" (or just reboot again).  NOW, run that same
> > > scenario where you get the log spew as mentioned above.  Is that still
> > > happening?  Also, if it isn't still happening, does "modprobe -r
> > > pvrusb2" still get stuck?
> > >
> > > The reason I ask is because that's what I am seeing here.  That
> > > ir-kbd-i2c here is the source of the endless stream of failing I2C
> > > requests 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 from
> > > this - due to sysfs doing something unexpected - it is not panicing.
> > > So I have not yet seen that specific problem.  I'd like to know what
> > > exact kernel was being run (distro / uname -r output / .config would
> > > help too).
> > >
> > >   -Mike
> > >
> > > --
> > >
> > > Mike Isely
> > > isely @ isely (dot) net
> > > PGP: 03 54 43 4D 75 E5 CC 92 71 16 01 E2 B5 F5 C1 E8
> > > _______________________________________________
> > > pvrusb2 mailing list
> > > pvrusb2 at isely.net
> > > http://www.isely.net/cgi-bin/mailman/listinfo/pvrusb2
> > >
> >
> > --
> >
> > Mike Isely
> > isely @ isely (dot) net
> > PGP: 03 54 43 4D 75 E5 CC 92 71 16 01 E2 B5 F5 C1 E8
> > _______________________________________________
> > pvrusb2 mailing list
> > pvrusb2 at isely.net
> > http://www.isely.net/cgi-bin/mailman/listinfo/pvrusb2
> >
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-- 

Mike Isely
isely @ isely (dot) net
PGP: 03 54 43 4D 75 E5 CC 92 71 16 01 E2 B5 F5 C1 E8

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