kernel-packages team mailing list archive

["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

Alan Pope ㋛, this bug was reported a while ago and there hasn't been any
activity in it recently. We were wondering if this is still an issue? If
so, could you please test for this with the latest development release
of Ubuntu? ISO images are available from http://cdimage.ubuntu.com
/daily-live/current/ .

If it remains an issue, could you please run the following command in
the development release from a Terminal
(Applications->Accessories->Terminal), as it will automatically gather
and attach updated debug information to this report:

apport-collect -p linux <replace-with-bug-number>

Also, could you please test the latest upstream kernel available following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Please do not test the daily folder, but the one all the way at the bottom. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested. For example:
kernel-fixed-upstream-v3.11-rc5

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag:
needs-upstream-testing

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

As well, please remove the tag:
needs-upstream-testing

Once testing of the upstream kernel is complete, please mark this bug's
Status as Confirmed. Please let us know your results. Thank you for your
understanding.

** Tags removed: kernel-request-3.2.0-20.33
** Tags added: bios-outdated-v12.3 bot-stop-nagging needs-upstream-testing

** Attachment removed: "dmesg log with kernel Oops"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/966151/+attachment/3165088/+files/dmesg.txt

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/966151

Title:
  Kernel oops when unplugging USB devices

Status in The Linux Kernel:
  Incomplete
Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  I have a keyboard and USB wifi dongle attached to a USB hub which is attached via a cable to my PC.
  I noticed the keyboard stopped responding so reached for the USB hub and unplugged it.
  Instantly got a kernel oops screen.

   [ 9881.300460] usb 1-1.1.4: USB disconnect, device number 6
  [ 9881.300462] usb 1-1.1.4.3: USB disconnect, device number 7
  [ 9881.302713] usb 1-1.1.4: clear tt 1 (0070) error -71
  [ 9881.558614] usb 1-1.1.4.4: USB disconnect, device number 8
  [ 9881.797709] BUG: unable to handle kernel NULL pointer dereference at 00000000000000a8
  [ 9881.797750] IP: [<ffffffffa02766e4>] r8712_read32+0x14/0x20 [r8712u]
  [ 9881.797785] PGD 0 
  [ 9881.797796] Oops: 0000 [#1] SMP 
  [ 9881.797814] CPU 5 
  [ 9881.797824] Modules linked in: ip6table_filter ip6_tables ebtable_nat ebtables xt_state ipt_REJECT xt_CHECKSUM iptable_mangle xt_tcpudp iptable_filter pci_stub vboxpci(O) ipt_MASQUERADE vboxnetadp(O) iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 ip_tables vboxnetflt(O) x_tables vboxdrv(O) bridge stp snd_hda_codec_hdmi snd_hda_codec_realtek rfcomm bnep bluetooth binfmt_misc snd_hda_intel snd_hda_codec snd_ctxfi uvcvideo videodev v4l2_compat_ioctl32 i915 snd_usb_audio snd_hwdep snd_usbmidi_lib snd_seq_midi r8712u(C) snd_pcm joydev drm_kms_helper snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device drm snd lp i2c_algo_bit soundcore ppdev snd_page_alloc video shpchp parport_pc parport mei(C) psmouse mac_hid serio_raw r8169 usbhid hid btrfs zlib_deflate libcrc32c [last unloaded: kvm]
  [ 9881.798213] 
  [ 9881.798223] Pid: 1225, comm: wlan1 Tainted: G         C O 3.2.0-20-generic #32-Ubuntu MSI MS-7680/H61M-E23 (MS-7680)
  [ 9881.798268] RIP: 0010:[<ffffffffa02766e4>]  [<ffffffffa02766e4>] r8712_read32+0x14/0x20 [r8712u]
  [ 9881.798308] RSP: 0018:ffff88022f659e10  EFLAGS: 00010246
  [ 9881.798330] RAX: 0000000000000000 RBX: ffff880219ab38a0 RCX: 0000000000000005
  [ 9881.798359] RDX: 0000000000000000 RSI: 0000000010250370 RDI: 0000000000000048
  [ 9881.798387] RBP: ffff88022f659e10 R08: ffff88022f658000 R09: 000000000000035a
  [ 9881.798415] R10: 0000000000000000 R11: 0000000000000001 R12: ffff8802308b8780
  [ 9881.798443] R13: 000000000000001d R14: ffff8802308b8dd8 R15: ffff8802315fee00
  [ 9881.798472] FS:  0000000000000000(0000) GS:ffff88023fb40000(0000) knlGS:0000000000000000
  [ 9881.798504] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
  [ 9881.798527] CR2: 00000000000000a8 CR3: 0000000001c05000 CR4: 00000000000406e0
  [ 9881.798554] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
  [ 9881.798582] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
  [ 9881.798611] Process wlan1 (pid: 1225, threadinfo ffff88022f658000, task ffff88023085dbc0)
  [ 9881.798643] Stack:
  [ 9881.798652]  ffff88022f659e40 ffffffffa026f5b8 ffff88022f659e50 ffff880036e20dc0
  [ 9881.798689]  ffff8802308b8780 ffff8802308b8e08 ffff88022f659e80 ffffffffa026f659
  [ 9881.798726]  0000000000000286 ffff8802308b8e18 ffff88022f659e80 ffff8802308b8780
  [ 9881.798763] Call Trace:
  [ 9881.798781]  [<ffffffffa026f5b8>] r871x_internal_cmd_hdl+0x98/0xe0 [r8712u]
  [ 9881.798811]  [<ffffffffa026f659>] cmd_hdl_filter+0x59/0x120 [r8712u]
  [ 9881.798841]  [<ffffffffa026f899>] r8712_cmd_thread+0xb9/0x250 [r8712u]
  [ 9881.798870]  [<ffffffffa026f7e0>] ? r8712_fw_cmd_data+0x50/0x50 [r8712u]
  [ 9881.798898]  [<ffffffff8108a45c>] kthread+0x8c/0xa0
  [ 9881.798922]  [<ffffffff81666674>] kernel_thread_helper+0x4/0x10
  [ 9881.798947]  [<ffffffff8108a3d0>] ? flush_kthread_worker+0xa0/0xa0
  [ 9881.798973]  [<ffffffff81666670>] ? gs_change+0x13/0x13
  [ 9881.798993] Code: 48 8b 87 40 07 00 00 48 8d 78 48 ff 90 a0 00 00 00 5d c3 0f 1f 40 00 55 48 89 e5 66 66 66 66 90 48 8b 87 40 07 00 00 48 8d 78 48 <ff> 90 a8 00 00 00 5d c3 0f 1f 40 00 55 48 89 e5 66 66 66 66 90 
  [ 9881.799134] RIP  [<ffffffffa02766e4>] r8712_read32+0x14/0x20 [r8712u]
  [ 9881.799157]  RSP <ffff88022f659e10>
  [ 9881.799167] CR2: 00000000000000a8
  [ 9881.864461] ---[ end trace c202cdf2a0fe8bfd ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image-3.2.0-20-generic 3.2.0-20.32
  ProcVersionSignature: Ubuntu 3.2.0-20.32-generic 3.2.12
  Uname: Linux 3.2.0-20-generic x86_64
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  AplayDevices: aplay: device_list:252: no soundcards found...
  ApportVersion: 1.95-0ubuntu1
  Architecture: amd64
  ArecordDevices: arecord: device_list:252: no soundcards found...
  CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
  Date: Tue Mar 27 12:38:40 2012
  HibernationDevice: RESUME=UUID=9b3ebbe4-b26e-41d8-935f-7a88c47ea356
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120102)
  MachineType: MSI MS-7680
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-20-generic root=UUID=3d53ca44-6af4-422d-b1b0-adf30c679a2f ro quiet splash vt.handoff=7
  RfKill:
   
  SourcePackage: linux
  StagingDrivers: r8712u mei
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 05/23/2011
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: V10.8
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: H61M-E23 (MS-7680)
  dmi.board.vendor: MSI
  dmi.board.version: 2.0
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: MSI
  dmi.chassis.version: 2.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV10.8:bd05/23/2011:svnMSI:pnMS-7680:pvr2.0:rvnMSI:rnH61M-E23(MS-7680):rvr2.0:cvnMSI:ct3:cvr2.0:
  dmi.product.name: MS-7680
  dmi.product.version: 2.0
  dmi.sys.vendor: MSI

To manage notifications about this bug go to:
https://bugs.launchpad.net/linux/+bug/966151/+subscriptions