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[Bug 1173723] Re: BUG: unable to handle kernel NULL pointer dereference at 0000000000000050; RIP: 0010:[<ffffffffa046ada1>] [<ffffffffa046ada1>] v4l2_ctrl_g_ctrl+0x11/0x60 [videodev]

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: "Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>
Date: Sun, 28 Jul 2013 17:24:52 -0000
Reply-to: Bug 1173723 <1173723@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
SlavikZ, thank you for commit bisecting the kernel. Could you please boot into a Live environment of Quantal via http://releases.ubuntu.com/quantal/ , unplug all USB devices, plug in just the Hercules Blog Webcam, and then immediately execute the following in a terminal and attach the results:
lsusb -v > lsusb-v.log

** Summary changed:

- Kernel oops when connecting web camera
+ BUG: unable to handle kernel NULL pointer dereference at 0000000000000050; RIP: 0010:[<ffffffffa046ada1>] [<ffffffffa046ada1>] v4l2_ctrl_g_ctrl+0x11/0x60 [videodev]

** Tags removed: needs-bisect
** Tags added: bisect-done

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/1173723

Title:
  BUG: unable to handle kernel NULL pointer dereference at
  0000000000000050; RIP: 0010:[<ffffffffa046ada1>] [<ffffffffa046ada1>]
  v4l2_ctrl_g_ctrl+0x11/0x60 [videodev]

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  After update to 13.04 when I connecting my Hercules Blog Webcam, I got kernel oops. This camera was working OK in 12.10 with latest linux-image-3.8.0-19-generic kernel. Current kernel version is (cat /proc/version_signature):
  Ubuntu 3.8.0-19.29-generic 3.8.8

  Here is the error stacktrace:
  Apr 26 23:01:31 ZHOME kernel: [  430.706302] usb 3-1: new high-speed USB device number 2 using xhci_hcd
  Apr 26 23:01:31 ZHOME kernel: [  430.724458] usb 3-1: New USB device found, idVendor=06f8, idProduct=3002
  Apr 26 23:01:31 ZHOME kernel: [  430.724462] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
  Apr 26 23:01:31 ZHOME kernel: [  430.724465] usb 3-1: Product: Hercules Blog Microphone
  Apr 26 23:01:31 ZHOME kernel: [  430.724467] usb 3-1: Manufacturer: Hercules Blog Webcam
  Apr 26 23:01:31 ZHOME mtp-probe: checking bus 3, device 2: "/sys/devices/pci0000:00/0000:00:14.0/usb3/3-1"
  Apr 26 23:01:31 ZHOME mtp-probe: bus: 3, device: 2 was not an MTP device
  Apr 26 23:01:31 ZHOME kernel: [  430.737089] Linux video capture interface: v2.00
  Apr 26 23:01:31 ZHOME kernel: [  430.739566] gspca_main: v2.14.0 registered
  Apr 26 23:01:31 ZHOME kernel: [  430.741319] gspca_main: ov534-2.14.0 probing 06f8:3002
  Apr 26 23:01:33 ZHOME kernel: [  433.522117] BUG: unable to handle kernel NULL pointer dereference at 0000000000000050
  Apr 26 23:01:33 ZHOME kernel: [  433.522169] IP: [<ffffffffa046ada1>] v4l2_ctrl_g_ctrl+0x11/0x60 [videodev]
  Apr 26 23:01:33 ZHOME kernel: [  433.522213] PGD 0 
  Apr 26 23:01:33 ZHOME kernel: [  433.522227] Oops: 0000 [#1] SMP 
  Apr 26 23:01:33 ZHOME kernel: [  433.522251] Modules linked in: gspca_ov534(+) gspca_main videodev vmnet(OF) vsock(OF) vmci(OF) vmmon(OF) rfcomm parport_pc(F) ppdev(F) bnep bluetooth binfmt_misc(F) snd_hda_codec_hdmi snd_hda_codec_realtek stir4200 irda(F) crc_ccitt(F) usblp kvm_intel snd_hda_intel snd_hda_codec kvm snd_hwdep(F) snd_pcm(F) ghash_clmulni_intel(F) snd_page_alloc(F) aesni_intel(F) snd_seq_midi(F) snd_seq_midi_event(F) aes_x86_64(F) xts(F) lrw(F) gf128mul(F) ablk_helper(F) cryptd(F) snd_rawmidi(F) hid_generic snd_seq(F) usbhid psmouse(F) hid snd_seq_device(F) snd_timer(F) snd(F) microcode(F) serio_raw(F) soundcore(F) alx lpc_ich mdio i915 mei drm_kms_helper video(F) drm i2c_algo_bit mac_hid coretemp lp(F) parport(F) firewire_ohci firewire_core crc_itu_t(F) ahci(F) libahci(F) r8169
  Apr 26 23:01:33 ZHOME kernel: [  433.522709] CPU 3 
  Apr 26 23:01:33 ZHOME kernel: [  433.522724] Pid: 5284, comm: modprobe Tainted: GF          O 3.8.0-19-generic #29-Ubuntu Gigabyte Technology Co., Ltd. To be filled by O.E.M./Z77-DS3H
  Apr 26 23:01:33 ZHOME kernel: [  433.522787] RIP: 0010:[<ffffffffa046ada1>]  [<ffffffffa046ada1>] v4l2_ctrl_g_ctrl+0x11/0x60 [videodev]
  Apr 26 23:01:33 ZHOME kernel: [  433.522837] RSP: 0018:ffff88011efabb88  EFLAGS: 00010296
  Apr 26 23:01:33 ZHOME kernel: [  433.522864] RAX: 0000000000000001 RBX: 0000000000000000 RCX: 00000001820001c0
  Apr 26 23:01:33 ZHOME kernel: [  433.522897] RDX: 00000001820001c1 RSI: 00000000820001c0 RDI: 0000000000000000
  Apr 26 23:01:33 ZHOME kernel: [  433.522931] RBP: ffff88011efabba8 R08: 0000000000000000 R09: 0000000000000001
  Apr 26 23:01:33 ZHOME kernel: [  433.522965] R10: ffffea0007f734c0 R11: ffffffff814fd2a2 R12: ffffffffa03273fc
  Apr 26 23:01:33 ZHOME kernel: [  433.522998] R13: 00000000ffffffff R14: 0000000000000000 R15: ffff8801eabfb430
  Apr 26 23:01:33 ZHOME kernel: [  433.523033] FS:  00007fb6ab739740(0000) GS:ffff88021f380000(0000) knlGS:0000000000000000
  Apr 26 23:01:33 ZHOME kernel: [  433.523071] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  Apr 26 23:01:33 ZHOME kernel: [  433.523098] CR2: 0000000000000050 CR3: 00000001d02d1000 CR4: 00000000001407e0
  Apr 26 23:01:33 ZHOME kernel: [  433.523132] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
  Apr 26 23:01:33 ZHOME kernel: [  433.523166] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
  Apr 26 23:01:33 ZHOME kernel: [  433.523201] Process modprobe (pid: 5284, threadinfo ffff88011efaa000, task ffff8801fdecae80)
  Apr 26 23:01:33 ZHOME kernel: [  433.523240] Stack:
  Apr 26 23:01:33 ZHOME kernel: [  433.523251]  ffffffffa0325424 ffff8801557b1000 ffffffffa03273fc ffff8801557b1000
  Apr 26 23:01:33 ZHOME kernel: [  433.523295]  ffff88011efabbd8 ffffffffa0326696 ffffffffa0327510 00000000ffffffff
  Apr 26 23:01:33 ZHOME kernel: [  433.523338]  ffff8801557b1000 ffff8801557b1000 ffff88011efabc00 ffffffffa032696d
  Apr 26 23:01:33 ZHOME kernel: [  433.523381] Call Trace:
  Apr 26 23:01:33 ZHOME kernel: [  433.523399]  [<ffffffffa0325424>] ? sccb_w_array+0x34/0x80 [gspca_ov534]
  Apr 26 23:01:33 ZHOME kernel: [  433.523434]  [<ffffffffa0326696>] sd_start+0xd6/0x250 [gspca_ov534]
  Apr 26 23:01:33 ZHOME kernel: [  433.523467]  [<ffffffffa032696d>] sd_init+0x15d/0x19c [gspca_ov534]
  Apr 26 23:01:33 ZHOME kernel: [  433.523500]  [<ffffffffa043df46>] gspca_dev_probe2+0x336/0x640 [gspca_main]
  Apr 26 23:01:33 ZHOME kernel: [  433.523535]  [<ffffffffa043e282>] gspca_dev_probe+0x32/0x60 [gspca_main]
  Apr 26 23:01:33 ZHOME kernel: [  433.523569]  [<ffffffffa0325081>] sd_probe+0x21/0x30 [gspca_ov534]
  Apr 26 23:01:33 ZHOME kernel: [  433.523602]  [<ffffffff8150095d>] usb_probe_interface+0x1ad/0x270
  Apr 26 23:01:33 ZHOME kernel: [  433.523635]  [<ffffffff814556c7>] driver_probe_device+0x77/0x230
  Apr 26 23:01:33 ZHOME kernel: [  433.523666]  [<ffffffff8145592b>] __driver_attach+0xab/0xb0
  Apr 26 23:01:33 ZHOME kernel: [  433.523695]  [<ffffffff81455880>] ? driver_probe_device+0x230/0x230
  Apr 26 23:01:33 ZHOME kernel: [  433.523727]  [<ffffffff814539dd>] bus_for_each_dev+0x5d/0xa0
  Apr 26 23:01:33 ZHOME kernel: [  433.523757]  [<ffffffff814551ce>] driver_attach+0x1e/0x20
  Apr 26 23:01:33 ZHOME kernel: [  433.523784]  [<ffffffff81454da0>] bus_add_driver+0x190/0x280
  Apr 26 23:01:33 ZHOME kernel: [  433.523815]  [<ffffffff81455ff7>] driver_register+0x77/0x170
  Apr 26 23:01:33 ZHOME kernel: [  433.523844]  [<ffffffff814ff32e>] usb_register_driver+0x8e/0x160
  Apr 26 23:01:33 ZHOME kernel: [  433.523877]  [<ffffffffa033d000>] ? 0xffffffffa033cfff
  Apr 26 23:01:33 ZHOME kernel: [  433.523905]  [<ffffffffa033d01e>] sd_driver_init+0x1e/0x1000 [gspca_ov534]
  Apr 26 23:01:33 ZHOME kernel: [  433.523940]  [<ffffffff8100215a>] do_one_initcall+0x12a/0x180
  Apr 26 23:01:33 ZHOME kernel: [  433.523973]  [<ffffffff810bfec7>] load_module+0x10c7/0x1520
  Apr 26 23:01:33 ZHOME kernel: [  433.524002]  [<ffffffff810bb830>] ? unset_module_init_ro_nx+0x80/0x80
  Apr 26 23:01:33 ZHOME kernel: [  433.524036]  [<ffffffff810c03e5>] sys_init_module+0xc5/0xf0
  Apr 26 23:01:33 ZHOME kernel: [  433.524067]  [<ffffffff816d379d>] system_call_fastpath+0x1a/0x1f
  Apr 26 23:01:33 ZHOME kernel: [  433.524096] Code: 72 09 00 00 48 c7 c7 e8 50 47 a0 e8 aa da be e0 eb cf 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 53 48 89 fb 48 83 ec 18 <8b> 47 50 83 e8 05 83 f8 02 77 09 80 b8 00 1a 47 a0 00 74 1d 48 
  Apr 26 23:01:33 ZHOME kernel: [  433.524352] RIP  [<ffffffffa046ada1>] v4l2_ctrl_g_ctrl+0x11/0x60 [videodev]
  Apr 26 23:01:33 ZHOME kernel: [  433.524392]  RSP <ffff88011efabb88>
  Apr 26 23:01:33 ZHOME kernel: [  433.524409] CR2: 0000000000000050
  Apr 26 23:01:33 ZHOME kernel: [  433.540985] ---[ end trace 85e41a22106076c7 ]---
  Apr 26 23:01:33 ZHOME udevd[5282]: '/sbin/modprobe -bv usb:v06F8p3002d0100dc00dsc00dp00ic01isc02ip00in02' [5284] terminated by signal 9 (Killed)
  Apr 26 23:02:32 ZHOME udevd[583]: timeout: killing '/sbin/modprobe -bv usb:v06F8p3002d0100dc00dsc00dp00icFFisc00ip00in00' [5290]
  Apr 26 23:02:32 ZHOME udevd[584]: timeout: killing '/sbin/modprobe -bv usb:v06F8p3002d0100dc00dsc00dp00ic01isc01ip00in01' [5283]
  Apr 26 23:02:32 ZHOME udevd[583]: '/sbin/modprobe -bv usb:v06F8p3002d0100dc00dsc00dp00icFFisc00ip00in00' [5290] terminated by signal 9 (Killed)
  Apr 26 23:02:32 ZHOME udevd[584]: '/sbin/modprobe -bv usb:v06F8p3002d0100dc00dsc00dp00ic01isc01ip00in01' [5283] terminated by signal 9 (Killed)
  Apr 26 23:03:46 ZHOME kernel: [  565.748695] usb 3-1: USB disconnect, device number 2
  --- 
  ApportVersion: 2.9.2-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  slavik     1908 F.... pulseaudio
  CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
  DistroRelease: Ubuntu 13.04
  HibernationDevice: RESUME=UUID=081f61a7-906d-4620-a633-a163ec180e52
  InstallationDate: Installed on 2012-12-23 (125 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
  MachineType: Gigabyte Technology Co., Ltd. To be filled by O.E.M.
  MarkForUpload: True
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-19-generic root=UUID=b93e0bf2-feef-48d4-8d48-c476c7bf6d5a ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8
  RelatedPackageVersions:
   linux-restricted-modules-3.8.0-19-generic N/A
   linux-backports-modules-3.8.0-19-generic  N/A
   linux-firmware                            1.106
  RfKill:
   
  Tags:  raring
  Uname: Linux 3.8.0-19-generic x86_64
  UpgradeStatus: Upgraded to raring on 2013-04-26 (1 days ago)
  UserGroups: adm cdrom dip lp lpadmin plugdev sambashare sudo
  WifiSyslog:
   
  dmi.bios.date: 09/19/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: F9
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: Z77-DS3H
  dmi.board.vendor: Gigabyte Technology Co., Ltd.
  dmi.board.version: x.x
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF9:bd09/19/2012:svnGigabyteTechnologyCo.,Ltd.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnZ77-DS3H:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: To be filled by O.E.M.
  dmi.product.version: To be filled by O.E.M.
  dmi.sys.vendor: Gigabyte Technology Co., Ltd.

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