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 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/727652 Title: kernel tried to execute NX-protected page -> NULL page request? -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs