Public bug reported:
I got this backtrace when running my up-to-date Kubuntu natty on Lenovo
X200s with standard apps + VirtualBox:
Mar 2 07:54:00 lure kernel: [ 383.787907] warning: `VirtualBox' uses 32-bit
capabilities (legacy support in use)
Mar 2 09:17:05 lure kernel: [ 5368.527074] kernel tried to execute
NX-protected page - exploit attempt? (uid: 1001)
Mar 2 09:17:05 lure kernel: [ 5368.527120] BUG: unable to handle kernel paging
request at ffffffff816bfca3
Mar 2 09:17:05 lure kernel: [ 5368.527157] IP: [<ffffffff816bfca3>]
__func__.16232+0x39470/0x1b8635
Mar 2 09:17:05 lure kernel: [ 5368.527197] PGD 1a05067 PUD 1a09063 PMD
80000000016001e1
Mar 2 09:17:05 lure kernel: [ 5368.527233] Oops: 0011 [#1] SMP
Mar 2 09:17:05 lure kernel: [ 5368.527255] last sysfs file:
/sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:01/PNP0C09:00/PNP0C0A:00/power_supply/BAT0/energy_now
Mar 2 09:17:05 lure kernel: [ 5368.527315] CPU 0
Mar 2 09:17:05 lure kernel: [ 5368.527328] Modules linked in: rfcomm sco bnep
l2cap vboxnetadp vboxnetflt vboxdrv microcode parport_pc ppdev arc4
snd_hda_codec_conexant snd_hda_intel snd_hda_codec iwlagn thinkpad_acpi
snd_hwdep snd_pcm snd_seq_midi iwlcore snd_rawmidi snd_seq_midi_event snd_seq
snd_timer snd_seq_device mac80211 snd cfg80211 snd_page_alloc psmouse serio_raw
btusb soundcore bluetooth lp parport nvram tpm_tis tpm tpm_bios sha256_generic
cryptd aes_x86_64 aes_generic dm_crypt i915 usb_storage uas drm_kms_helper
e1000e ahci drm i2c_algo_bit video libahci
Mar 2 09:17:05 lure kernel: [ 5368.527661]
Mar 2 09:17:05 lure kernel: [ 5368.527673] Pid: 1851, comm: yakuake Not
tainted 2.6.38-5-generic #32-Ubuntu LENOVO 74705HG/74705HG
Mar 2 09:17:05 lure kernel: [ 5368.527726] RIP: 0010:[<ffffffff816bfca3>]
[<ffffffff816bfca3>] __func__.16232+0x39470/0x1b8635
Mar 2 09:17:05 lure kernel: [ 5368.527773] RSP: 0018:ffff88010d6b5aa8 EFLAGS:
00010246
Mar 2 09:17:05 lure kernel: [ 5368.527801] RAX: 00000000fffffffc RBX:
ffff88010d6b5b98 RCX: 00000000c0000100
Mar 2 09:17:05 lure kernel: [ 5368.527837] RDX: 0000000000000000 RSI:
ffff880133742d80 RDI: ffff8800bd213b00
Mar 2 09:17:05 lure kernel: [ 5368.527872] RBP: ffff88010d6b5aa8 R08:
ffff88010d6b4000 R09: 000000000000037c
Mar 2 09:17:05 lure kernel: [ 5368.527908] R10: 0000000000000001 R11:
0000000000000001 R12: ffff88010d6b5e44
Mar 2 09:17:05 lure kernel: [ 5368.527943] R13: ffff880132b2e9c0 R14:
ffff88010d6b5b98 R15: ffff88010d6b5e44
Mar 2 09:17:05 lure kernel: [ 5368.529595] FS: 00007f9e59af3780(0000)
GS:ffff8800bd200000(0000) knlGS:0000000000000000
Mar 2 09:17:05 lure kernel: [ 5368.530009] CS: 0010 DS: 0000 ES: 0000 CR0:
000000008005003b
Mar 2 09:17:05 lure kernel: [ 5368.530009] CR2: ffffffff816bfca3 CR3:
000000010d601000 CR4: 00000000000026f0
Mar 2 09:17:05 lure kernel: [ 5368.530009] DR0: 0000000000000000 DR1:
0000000000000000 DR2: 0000000000000000
Mar 2 09:17:05 lure kernel: [ 5368.530009] DR3: 0000000000000000 DR6:
00000000ffff0ff0 DR7: 0000000000000400
Mar 2 09:17:05 lure kernel: [ 5368.530009] Process yakuake (pid: 1851,
threadinfo ffff88010d6b4000, task ffff880119c00000)
Mar 2 09:17:05 lure kernel: [ 5368.530009] Stack:
Mar 2 09:17:05 lure kernel: [ 5368.530009] ffff88010d6b5ad8 ffffffff81175b99
ffff88010d6b5ad8 0000000000000000
Mar 2 09:17:05 lure kernel: [ 5368.530009] 0000000000000000 0000000000000000
ffff88010d6b5b78 ffffffff811761da
Mar 2 09:17:05 lure kernel: [ 5368.530009] 0000000000000000 ffff880119c00000
00ff88010d6b5b38 0000000000000000
Mar 2 09:17:05 lure kernel: [ 5368.530009] Call Trace:
Mar 2 09:17:05 lure kernel: [ 5368.530009] [<ffffffff81175b99>]
poll_schedule_timeout+0x49/0x70
Mar 2 09:17:05 lure kernel: [ 5368.530009] [<ffffffff811761da>]
do_poll.clone.2+0x1ca/0x290
Mar 2 09:17:05 lure kernel: [ 5368.530009] [<ffffffff81177149>]
do_sys_poll+0x1c9/0x240
Mar 2 09:17:05 lure kernel: [ 5368.530009] [<ffffffff81175c70>] ?
__pollwait+0x0/0xf0
Mar 2 09:17:05 lure kernel: [ 5368.530009] [<ffffffff81175d60>] ?
pollwake+0x0/0x60
Mar 2 09:17:05 lure kernel: last message repeated 6 times
Mar 2 09:17:05 lure kernel: [ 5368.530009] [<ffffffff81163422>] ?
do_sync_read+0xd2/0x110
Mar 2 09:17:05 lure kernel: [ 5368.530009] [<ffffffff812784b3>] ?
security_file_permission+0x93/0xb0
Mar 2 09:17:05 lure kernel: [ 5368.530009] [<ffffffff81163741>] ?
rw_verify_area+0x61/0xf0
Mar 2 09:17:05 lure kernel: [ 5368.530009] [<ffffffff81163ca7>] ?
vfs_read+0x167/0x180
Mar 2 09:17:05 lure kernel: [ 5368.530009] [<ffffffff811772a6>]
sys_poll+0x76/0x110
Mar 2 09:17:05 lure kernel: [ 5368.530009] Code: c0 3b 64 81 ff ff ff ff 00 3c
64 81 ff ff ff ff 20 3c 64 81 ff ff ff ff c0 3c 64 81 ff ff ff ff 40 3d 64 81
ff ff ff ff 62 3d 64 <81> ff ff ff ff 6a 3d 64 81 ff ff ff ff 72 3d 64 81 ff ff
ff ff
Mar 2 09:17:05 lure kernel: [ 5368.530009] RIP [<ffffffff816bfca3>]
__func__.16232+0x39470/0x1b8635
Mar 2 09:17:05 lure kernel: [ 5368.530009] RSP <ffff88010d6b5aa8>
Mar 2 09:17:05 lure kernel: [ 5368.530009] CR2: ffffffff816bfca3
Mar 2 09:17:05 lure kernel: [ 5368.609835] ---[ end trace bafcc5a6226e3a8e ]---
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.38-5-generic 2.6.38-5.32
Regression: Yes
Reproducible: No
ProcVersionSignature: Ubuntu 2.6.38-5.32-generic 2.6.38-rc6
Uname: Linux 2.6.38-5-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: lukar 1815 F.... pulseaudio
/dev/snd/pcmC0D0p: lukar 1815 F...m pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf2620000 irq 46'
Mixer name : 'Conexant CX20561 (Hermosa)'
Components : 'HDA:14f15051,17aa20ff,00100000'
Controls : 16
Simple ctrls : 8
Card29.Amixer.info:
Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw
7XHT24WW-1.06'
Mixer name : 'ThinkPad EC 7XHT24WW-1.06'
Components : ''
Controls : 1
Simple ctrls : 1
Card29.Amixer.values:
Simple mixer control 'Console',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [on]
Date: Wed Mar 2 09:56:33 2011
Frequency: Once every few days.
HibernationDevice: RESUME=UUID=16ac97e6-961b-4a8f-b763-fc40aeccc5a4
InstallationMedia: Kubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110129)
MachineType: LENOVO 74705HG
ProcEnviron:
LANGUAGE=
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-5-generic
root=/dev/mapper/plain-root ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-2.6.38-5-generic N/A
linux-backports-modules-2.6.38-5-generic N/A
linux-firmware 1.47
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/10/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 6DET63WW (3.13 )
dmi.board.name: 74705HG
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias:
dmi:bvnLENOVO:bvr6DET63WW(3.13):bd03/10/2010:svnLENOVO:pn74705HG:pvrThinkPadX200s:rvnLENOVO:rn74705HG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 74705HG
dmi.product.version: ThinkPad X200s
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug kernel-sound natty needs-upstream-testing
regression-update
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https://bugs.launchpad.net/bugs/727652
Title:
kernel tried to execute NX-protected page -> NULL page request?
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