[Maverick] Null pointer dereference in intel_ips driver

[josh]

Oops when booting Maverick on TH55B / i3-530 system. Xorg will not launch either. (no /dev/fb0)

[ 5.426632] agpgart-intel 0000:00:00.0: AGP aperture is 256M @ 0xd0000000
[ 5.426657] intel ips 0000:00:1f.6: No CPUID match found.
[ 5.426668] BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
[ 5.426748] IP: [<ffffffffa00463c6>] ips_detect_cpu+0x76/0x1d0 [intel_ips]
[ 5.426808] PGD 13471c067 PUD 134136067 PMD 0
[ 5.426896] Oops: 0000 [#1] SMP
[ 5.426961] last sysfs file: /sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2:1.1/input/input4/event4/uevent
[ 5.427009] CPU 1
[ 5.427033] Modules linked in: ppdev(+) joydev btusb video
[ 5.427153] ppdev: user-space parallel port driver
[ 5.427205] parport_pc(+) snd_page_alloc intel_ips(+) bluetooth serio_raw output intel_agp(+) lp parport usbhid hid pata_jmicron r8169 mii
[ 5.427513]
[ 5.427537] Pid: 609, comm: modprobe Not tainted 2.6.35-22-generic #33-Ubuntu TH55B HD/TH55B HD
[ 5.427580] RIP: 0010:[<ffffffffa00463c6>] [<ffffffffa00463c6>] ips_detect_cpu+0x76/0x1d0 [intel_ips]
[ 5.427646] RSP: 0018:ffff88013414dc48 EFLAGS: 00010206
[ 5.427680] RAX: 0000000001a80248 RBX: 0000000000000000 RCX: 0000000001a80248
[ 5.427716] RDX: 0000000000000000 RSI: ffff88013414dc64 RDI: 0000000001a80248
[ 5.427752] RBP: ffff88013414dc88 R08: 0000000000000000 R09: 0000000000000000
[ 5.427787] R10: 0000000000000000 R11: 0000000000000003 R12: 0000000001a80248
[ 5.427822] R13: ffff880136749f00 R14: ffff8801369f6090 R15: 00000000fffffff4
[ 5.427858] FS: 00007f6c9145e700(0000) GS:ffff880001e40000(0000) knlGS:0000000000000000
[ 5.427914] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 5.427962] CR2: 0000000000000008 CR3: 00000001365e2000 CR4: 00000000000006e0
[ 5.428014] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5.428068] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 5.428124] Process modprobe (pid: 609, threadinfo ffff88013414c000, task ffff8801344f5b80)
[ 5.428201] Stack:
[ 5.428243] ffff88013414dc88 ffffffff81142fa4 ffff88013414dc98 00000000369f6000
[ 5.428356] <0> ffff8801369f6000 ffff880136749f00 ffff8801369f6000 00000000fffffff4
[ 5.428416] <0> ffff88013414dcd8 ffffffffa0046fb1 ffff88013414dcb8 ffff8801369bc870
[ 5.428419] Call Trace:
[ 5.428424] [<ffffffff81142fa4>] ? kmem_cache_alloc_notrace+0xb4/0xd0
[ 5.428429] [<ffffffffa0046fb1>] ips_probe+0x71/0x710 [intel_ips]
[ 5.428434] [<ffffffff812d6ec7>] local_pci_probe+0x17/0x20
[ 5.428437] [<ffffffff812d71b9>] __pci_device_probe+0xe9/0xf0
[ 5.428441] [<ffffffff812b951a>] ? kobject_get+0x1a/0x30
[ 5.428446] [<ffffffff81383c29>] ? get_device+0x19/0x20
[ 5.428448] [<ffffffff812d825a>] pci_device_probe+0x3a/0x60
[ 5.428451] [<ffffffff81387fe8>] really_probe+0x68/0x190
[ 5.428453] [<ffffffff81388155>] driver_probe_device+0x45/0x70
[ 5.428455] [<ffffffff8138821b>] __driver_attach+0x9b/0xa0
[ 5.428457] [<ffffffff81388180>] ? __driver_attach+0x0/0xa0
[ 5.428459] [<ffffffff81387428>] bus_for_each_dev+0x68/0x90
[ 5.428461] [<ffffffff81387e5e>] driver_attach+0x1e/0x20
[ 5.428462] [<ffffffff8138771e>] bus_add_driver+0xde/0x280
[ 5.428464] [<ffffffff81388560>] driver_register+0x80/0x150
[ 5.428469] [<ffffffff8158d0f6>] ? notifier_call_chain+0x56/0x80
[ 5.428471] [<ffffffff812d84e6>] __pci_register_driver+0x56/0xd0
[ 5.428475] [<ffffffff81084f05>] ? __blocking_notifier_call_chain+0x65/0x80
[ 5.428478] [<ffffffffa0057000>] ? ips_init+0x0/0x20 [intel_ips]
[ 5.428480] [<ffffffffa005701e>] ips_init+0x1e/0x20 [intel_ips]
[ 5.428484] [<ffffffff8100204c>] do_one_initcall+0x3c/0x1a0
[ 5.428489] [<ffffffff8109bc6b>] sys_init_module+0xbb/0x200
[ 5.428493] [<ffffffff8100a0f2>] system_call_fastpath+0x16/0x1b
[ 5.428494] Code: a0 48 c7 c7 88 ec ac 81 48 c7 c3 80 8a 04 a0 e8 c1 7c 27 e1 48 85 c0 74 44 bf ac 01 00 00 4c 89 e6 e8 3f fe fe e0 66 90 41 89 c4 <8b> 53 08 41 c1 e4 12 41 c1 ec 15 41 69 c4 e8 03 00 00 39 c2 0f
[ 5.428507] RIP [<ffffffffa00463c6>] ips_detect_cpu+0x76/0x1d0 [intel_ips]
[ 5.428510] RSP <ffff88013414dc48>
[ 5.428511] CR2: 0000000000000008
[ 5.428513] ---[ end trace f31fedfd676a5767 ]---

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: linux-image (not installed)
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.35-22.33-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic x86_64
AlsaDevices:
 total 0
 crw-rw---- 1 root audio 116, 3 2010-10-03 10:13 seq
 crw-rw---- 1 root audio 116, 2 2010-10-03 10:13 timer
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
AplayDevices: aplay: device_list:235: no soundcards found...
Architecture: amd64
ArecordDevices: arecord: device_list:235: no soundcards found...
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CRDA: Error: [Errno 2] No such file or directory
Date: Sun Oct 3 10:22:39 2010
HibernationDevice: RESUME=UUID=79a32016-a006-4694-8d26-0d587fef477b
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release Candidate amd64 (20100928)
IwConfig:
 lo no wireless extensions.

 eth0 no wireless extensions.
MachineType: BIOSTAR Group TH55B HD
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-22-generic root=UUID=6c81965b-ec04-4e1b-b155-9856bb742a87 ro quiet splash
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.38
RfKill:
 0: hci0: Bluetooth
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
dmi.bios.date: 12/31/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 080015
dmi.board.asset.tag: None
dmi.board.name: TH55B HD
dmi.board.vendor: BIOSTAR Group
dmi.chassis.asset.tag: None
dmi.chassis.type: 3
dmi.chassis.vendor: BIOSTAR Group
dmi.chassis.version: 6.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr080015:bd12/31/2009:svnBIOSTARGroup:pnTH55BHD:pvr6.0:rvnBIOSTARGroup:rnTH55BHD:rvr:cvnBIOSTARGroup:ct3:cvr6.0:
dmi.product.name: TH55B HD
dmi.product.version: 6.0
dmi.sys.vendor: BIOSTAR Group