BUG: unable to handle kernel NULL pointer dereference at 0000000000000010 // decrypt_scatterlist+0x5d/0x110

[Aaron Bentley]

While building Launchpad

ProblemType: KernelOops
DistroRelease: Ubuntu 11.10
Package: linux-image-3.0.0-11-generic 3.0.0-11.18
ProcVersionSignature: Ubuntu 3.0.0-11.18-generic 3.0.4
Uname: Linux 3.0.0-11-generic x86_64
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
Annotation: Your system might become unstable now and might need to be restarted.
ApportVersion: 1.23-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: abentley 2063 F.... pulseaudio
 /dev/snd/controlC2: abentley 2063 F.... pulseaudio
 /dev/snd/controlC0: abentley 2063 F.... pulseaudio
 /dev/snd/pcmC0D0p: abentley 2063 F...m pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xfbd00000 irq 49'
   Mixer name : 'Realtek ALC665'
   Components : 'HDA:10ec0665,10280468,00100003'
   Controls : 23
   Simple ctrls : 12
Card1.Amixer.info:
 Card hw:1 'NVidia'/'HDA NVidia at 0xfb080000 irq 17'
   Mixer name : 'Nvidia GPU 14 HDMI/DP'
   Components : 'HDA:10de0014,10de0101,00100100'
   Controls : 16
   Simple ctrls : 4
Card2.Amixer.info:
 Card hw:2 'Headset'/'Logitech Logitech USB Headset at usb-0000:00:1d.0-1.3, full speed'
   Mixer name : 'USB Mixer'
   Components : 'USB046d:0a0b'
   Controls : 6
   Simple ctrls : 2
Date: Mon Sep 26 10:31:17 2011
Failure: oops
HibernationDevice: RESUME=UUID=f4e9e42e-2ac0-4578-8d64-7e59376e195d
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
MachineType: Dell Inc. XPS L401X
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-11-generic root=UUID=993d18c1-88a8-41ee-87af-096e9014c9eb ro quiet splash vt.handoff=7
PulseSinks: Error: command ['pacmd', 'list-sinks'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
PulseSources: Error: command ['pacmd', 'list-sources'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions: kerneloops-daemon 0.12+git20090217-1ubuntu14
SourcePackage: linux
StagingDrivers: mei
Title: BUG: unable to handle kernel NULL pointer dereference at 0000000000000010
UpgradeStatus: Upgraded to oneiric on 2011-09-20 (6 days ago)
dmi.bios.date: 12/22/2010
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A06
dmi.board.name: 0KXFG0
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: Not Specified
dmi.modalias: dmi:bvnDellInc.:bvrA06:bd12/22/2010:svnDellInc.:pnXPSL401X:pvrNotSpecified:rvnDellInc.:rn0KXFG0:rvrA00:cvnDellInc.:ct8:cvrNotSpecified:
dmi.product.name: XPS L401X
dmi.product.version: Not Specified
dmi.sys.vendor: Dell Inc.

[Brad Figg (brad-figg)]

Thank you for taking the time to file a bug report on this issue.

However, given the number of bugs that the Kernel Team receives during any development cycle it is impossible for us to review them all. Therefore, we occasionally resort to using automated bots to request further testing. This is such a request.

We have noted that there is a newer version of the development kernel than the one you last tested when this issue was found. Please test again with the newer kernel and indicate in the bug if this issue still exists or not.

If the bug still exists, change the bug status from Incomplete to Confirmed. If the bug no longer exists, change the bug status from Incomplete to Fix Released.

Thank you for your help, we really do appreciate it.

[Andy Whitcroft (apw)]

BUG: unable to handle kernel NULL pointer dereference at 0000000000000010
IP: [<ffffffff812556ad>] decrypt_scatterlist+0x5d/0x110
PGD a6aca067 PUD 85074067 PMD 0
Oops: 0000 [#1] SMP
CPU 6
Modules linked in: hidp bnep rfcomm ip6table_filter ip6_tables ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_CHECKSUM iptable_mangle xt_tcpudp iptable_filter ip_tables x_tables bridge stp parport_pc ppdev dm_crypt vesafb joydev snd_hda_codec_hdmi kvm_intel kvm binfmt_misc arc4 dell_wmi mxm_wmi sparse_keymap dell_laptop dcdbas snd_usb_audio nvidia(P) snd_usbmidi_lib psmouse serio_raw i7core_edac edac_core uvcvideo videodev btusb v4l2_compat_ioctl32 bluetooth iwlagn mac80211 cfg80211 jmb38x_ms memstick snd_hda_codec_realtek mei(C) video snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd soundcore snd_page_alloc wmi lp parport usbhid hid ahci libahci r8169 sdhci_pci sdhci

Pid: 12560, comm: python2.6 Tainted: P C 3.0.0-11-generic #18-Ubuntu Dell Inc. XPS L401X/0KXFG0
RIP: 0010:[<ffffffff812556ad>] [<ffffffff812556ad>] decrypt_scatterlist+0x5d/0x110
RSP: 0018:ffff88008502db08 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000001000 RCX: 0000000000001000
RDX: 0000000000000010 RSI: ffff88010c2742f8 RDI: 0000000000000000
RBP: ffff88008502db58 R08: ffff88008502dbc0 R09: ffff88008502dba0
R10: 0000000000000000 R11: 0000000090b4df2a R12: ffff88008502db80
R13: ffff88010c274288 R14: ffff88010c274378 R15: ffff88008502dba0
FS: 00002b4badfdc620(0000) GS:ffff88023fd80000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000010 CR3: 000000008520d000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process python2.6 (pid: 12560, threadinfo ffff88008502c000, task ffff880194019720)
Stack:
 0000000000000000 0000000000000000 ffff88008502dbc0 0000000000000200
 0000000000020000 ffff88010c274288 ffffea0001a2d680 0000000000000000
 ffffea0001d193b0 0000000000000000 ffff88008502dc08 ffffffff81255f21
Call Trace:
 [<ffffffff81255f21>] ecryptfs_decrypt_extent+0x121/0x2c0
 [<ffffffff81256aa2>] ecryptfs_decrypt_page+0xc2/0x1a0
 [<ffffffff81254418>] ecryptfs_readpage+0xd8/0x120
 [<ffffffff8110ad4d>] do_generic_file_read.constprop.36+0x10d/0x440
 [<ffffffff8110be70>] generic_file_aio_read+0x120/0x290
 [<ffffffff81250d3c>] ecryptfs_read_update_atime+0x1c/0x60
 [<ffffffff811670f2>] do_sync_read+0xd2/0x110
 [<ffffffff81282cc3>] ? security_file_permission+0x93/0xb0
 [<ffffffff81167431>] ? rw_verify_area+0x61/0xf0
 [<ffffffff81167910>] vfs_read+0xb0/0x180
 [<ffffffff81167a2a>] sys_read+0x4a/0x90
 [<ffffffff815f21c2>] system_call_fastpath+0x16/0x1b
Code: 49 89 d4 89 cb 4c 89 45 c0 4c 89 f7 48 89 45 b8 c7 45 c8 00 02 00 00 e8 62 32 39 00 49 8b 45 40 49 8b 55 20 49 8d 75 70 48 89 c7 <ff> 50 10 85 c0 75 7c 31 c0 89 da 48 c7 c6 a0 9b 62 81 48 c7 c7
RIP [<ffffffff812556ad>] decrypt_scatterlist+0x5d/0x110
 RSP <ffff88008502db08>
CR2: 0000000000000010
---[ end trace b8a804fc15ce3f56 ]---