kernel-packages team mailing list archive

[hjl <hjl@xxxxxxxxxxxxxxxxx>]

Dear Chris and Uli,

I have installed Lubuntu 16.04 on another disk with pokini1. Running
kernel 4.4.0 does not produce the bug anymore. But, the Gui is still
broken, just no more kernel NULL pointer dereference error. I had to
change the display also and it is not HDMI.


I had gotten following info from Uli:
cause of problem is the GMA500 driver which causes the issues when
used with an HDMI display and the 1920x1080 resolution.

So far I was able to verify that. The issue is related to the HDMI
resolution and hence the driver.

My bios has two options for the shared memory for the display:

- 128 MiB and
- 256 MiB

I use since the very first installation the 256MiB option in then
 which never gave issues.

Seems that the current GMA500 driver needs more than 256 MiB or some
checks on available memory are not done properly...

I shall try now to blacklist the GMA500 driver and will let you know

Thahnks for your help and patience.
regards
hjl

-- 
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/1567781

Title:
  unable to handle kernel NULL pointer dereference at 00000134

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Problem is found in dmesg output:
  [   11.660671] BUG: unable to handle kernel NULL pointer dereference at 00000134
  [   11.660688] IP: [<c17692b2>] mutex_lock+0x12/0x30
  [   11.660706] *pdpt = 0000000033ee5001 *pde = 0000000000000000
  [   11.660714] Oops: 0002 [#1] SMP
  [   11.660723] Modules linked in: nfsd auth_rpcgss nfs_acl lockd parport_pc grace ppdev lp sunrpc parport autofs4 hid_generic hid_cherry pata_acpi usbhid hid psmouse gma500_gfx i2c_algo_bit r8169 drm_kms_helper drm sdhci_pci pata_sch sdhci mii video
  [   11.660772] CPU: 1 PID: 242 Comm: plymouthd Not tainted 4.2.0-35-generic #40-Ubuntu
  [   11.660779] Hardware name: CompuLab CM-iAM/SBC-FITPC2i/CM-iAM/SBC-FITPC2i, BIOS NAPA0001.86C.0000.D.1009141059 09/14/2010
  [   11.660785] task: f5cf08c0 ti: f2364000 task.ti: f2364000
  [   11.660792] EIP: 0060:[<c17692b2>] EFLAGS: 00010286 CPU: 1
  [   11.660798] EIP is at mutex_lock+0x12/0x30
  [   11.660804] EAX: 00000134 EBX: 00000134 ECX: 00000000 EDX: 80000000
  [   11.660810] ESI: 00000000 EDI: 00000000 EBP: f2365ea8 ESP: f2365ea4
  [   11.660815]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
  [   11.660820] CR0: 80050033 CR2: 00000134 CR3: 31a1d540 CR4: 000006f0
  [   11.660824] Stack:
  [   11.660828]  f19f93a0 f2365ec0 f8586171 f326dea0 f1ad7000 00000000 f1a0a400 f2365ec8
  [   11.660842]  f858621f f2365edc f845ff47 f1a0a400 f1a0a400 f1a0a400 f2365eec f84b6019
  [   11.660856]  f2365f04 c11b2de4 f2365f04 f856a78a f74d59d0 00000000 00000000 f1a0a400
  [   11.660869] Call Trace:
  [   11.660935]  [<f8586171>] __drm_modeset_lock_all+0x91/0x130 [drm]
  [   11.660986]  [<f858621f>] drm_modeset_lock_all+0xf/0x30 [drm]
  [   11.661018]  [<f845ff47>] drm_fb_helper_restore_fbdev_mode_unlocked+0x17/0x50 [drm_kms_helper]
  [   11.661048]  [<f84b6019>] psb_driver_lastclose+0x19/0x50 [gma500_gfx]
  [   11.661060]  [<c11b2de4>] ? kfree+0x134/0x140
  [   11.661110]  [<f856a78a>] drm_lastclose+0x2a/0x140 [drm]
  [   11.661159]  [<f856ab3f>] drm_release+0x29f/0x490 [drm]
  [   11.661170]  [<c11cd0af>] __fput+0xcf/0x210
  [   11.661179]  [<c11cd22d>] ____fput+0xd/0x10
  [   11.661189]  [<c10869af>] task_work_run+0x7f/0xa0
  [   11.661200]  [<c1012035>] do_notify_resume+0x75/0x80
  [   11.661209]  [<c176bbcb>] work_notifysig+0x16/0x1b
  [   11.661215] Code: 00 00 c3 8d b6 00 00 00 00 31 c0 5d c3 8d b6 00 00 00 00 8d bf 00 00 00 00 55 89 e5 53 3e 8d 74 26 00 89 c3 e8 60 ef ff ff 89 d8 <f0> ff 08 79 05 e8 74 07 00 00 64 a1 c8 c0 bf c1 89 43 10 5b 5d
  [   11.661311] EIP: [<c17692b2>] mutex_lock+0x12/0x30 SS:ESP 0068:f2365ea4
  [   11.661323] CR2: 0000000000000134
  [   11.661332] ---[ end trace 3bb80835d39a3e44 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: linux-image-4.2.0-35-generic 4.2.0-35.40
  ProcVersionSignature: Ubuntu 4.2.0-35.40-generic 4.2.8-ckt5
  Uname: Linux 4.2.0-35-generic i686
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: i386
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D2c', '/dev/snd/pcmC0D1p', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/controlC0', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  Date: Fri Apr  8 08:21:26 2016
  HibernationDevice: RESUME=UUID=fda9b258-61a9-4bc5-974e-738538cee628
  InstallationDate: Installed on 2013-07-09 (1003 days ago)
  InstallationMedia: Lubuntu 13.04 "Raring Ringtail" - Release i386 (20130423.1)
  MachineType: CompuLab CM-iAM/SBC-FITPC2i
  ProcFB: 0 VESA VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-35-generic root=UUID=41b7698f-f3fa-4940-8e13-9378c5021e90 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.2.0-35-generic N/A
   linux-backports-modules-4.2.0-35-generic  N/A
   linux-firmware                            1.149.3
  RfKill:
   0: phy0: Wireless LAN
   	Soft blocked: yes
   	Hard blocked: no
  SourcePackage: linux
  UpgradeStatus: Upgraded to wily on 2015-12-23 (106 days ago)
  dmi.bios.date: 09/14/2010
  dmi.bios.vendor: Phoenix Technologies LTD
  dmi.bios.version: NAPA0001.86C.0000.D.1009141059
  dmi.board.name: CM-iAM/SBC-FITPC2i
  dmi.board.vendor: Intel Corporation
  dmi.board.version: 1.x
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 1
  dmi.chassis.vendor: OEM
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrNAPA0001.86C.0000.D.1009141059:bd09/14/2010:svnCompuLab:pnCM-iAM/SBC-FITPC2i:pvrNotApplicable:rvnIntelCorporation:rnCM-iAM/SBC-FITPC2i:rvr1.x:cvnOEM:ct1:cvrN/A:
  dmi.product.name: CM-iAM/SBC-FITPC2i
  dmi.product.version: Not Applicable
  dmi.sys.vendor: CompuLab

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1567781/+subscriptions