Kernel oops when unplugging USB devices
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Linux |
Incomplete
|
Medium
|
|||
linux (Ubuntu) |
Invalid
|
Medium
|
Unassigned |
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: [<ffffffffa0276
[ 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_
[ 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:[<
[ 9881.798308] RSP: 0018:ffff88022f
[ 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: 000000000000000
[ 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] [<ffffffffa026f
[ 9881.798811] [<ffffffffa026f
[ 9881.798841] [<ffffffffa026f
[ 9881.798870] [<ffffffffa026f
[ 9881.798898] [<ffffffff8108a
[ 9881.798922] [<ffffffff81666
[ 9881.798947] [<ffffffff8108a
[ 9881.798973] [<ffffffff81666
[ 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 [<ffffffffa0276
[ 9881.799157] RSP <ffff88022f659e10>
[ 9881.799167] CR2: 00000000000000a8
[ 9881.864461] ---[ end trace c202cdf2a0fe8bfd ]---
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-
ProcVersionSign
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=
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120102)
MachineType: MSI MS-7680
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=
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.
dmi.board.name: H61M-E23 (MS-7680)
dmi.board.vendor: MSI
dmi.board.version: 2.0
dmi.chassis.
dmi.chassis.type: 3
dmi.chassis.vendor: MSI
dmi.chassis.
dmi.modalias: dmi:bvnAmerican
dmi.product.name: MS-7680
dmi.product.
dmi.sys.vendor: MSI
Changed in linux (Ubuntu): | |
importance: | Undecided → Medium |
tags: | added: kernel-da-key r8712-read32 |
Changed in linux (Ubuntu): | |
status: | Expired → Confirmed |
Changed in linux: | |
importance: | Unknown → Medium |
status: | Unknown → Confirmed |
Changed in linux: | |
status: | Confirmed → Incomplete |
Status changed to 'Confirmed' because the bug affects multiple users.