[Bug 31936] using touchpad with cPad driver causes a kernel panic

Evan Dandrea daneva76 at email.pct.edu
Sun Feb 19 01:01:10 UTC 2006


Public bug reported:
https://launchpad.net/malone/bugs/31936

Affects: linux-source-2.6.15 linux-image-2.6.15-15-686 (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: Unconfirmed

Description:
I upgraded from Breezy where the Synaptics touchpad (cPad) worked fine.
In Dapper if you so much as touch the touchpad the kernel panics.

If some of the addresses don't make sense, let me know and I'll take
another picture.  I used a camera that creates blurry images and was
having a hard time differentiating c's from e's.


[4294846.389000] Unable to handle kernel NULL pointer dereference at virtual address 00000000
[4294846.389000]  printing eip:
[4294846.389000] *pde = 00000000
[4294846.390000] Oops: 0000 [#1]
[4294846.390000] PREEMPT SMP
[4294846.390000] Modules linked in: cpad binfmt misc rfcomm l2cap bluetooth speedstep_ich speedstep_lib cpufreq_powersave cpufreq_stats cpufreq_userspace cpufreq_ondemand cpufreq_conservative freq_table ipv6 tc1100_wmi video acpi_sbs battery i2c_acpi_cc i2c_core container button pcc_acpi toshiba_acpi sony_acpi ac dev_acpi hotkey md_mod dm_mod af_packet sr_mod sbp2 scsi_mod parport_pc lp parport orinoco_cs orinoco hermes pcmcia psmouse serio_raw yenta_socket rsrc_nonstatic pcmcia_core e100 mii snd_intel8x0 ohci1394 ieee1394 snd_ac97_codec snd_ac97_bus nvidia snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore rtc snd_page_alloc pcspkr shpchp intel_agp agpgart pci_hotplug tsdev evdev usbhid reiserfs echi_hcd ohci_hcd usbcore ide_generic ide_cd cdrom ide_disk piix generic thermal processor fan capability commoncap vesafb cfbcopyarea cfbimgbit cfbfillrect fbcon tileblit font bitblit softcursor
[4294846.390000] CPU:	0
[4294846.390000] EIP:	0060:[<40276720>]	Tainted: P	VLI
[4294846.390000] EFLAGS: 00010246	(2.6.15-15-686)
[4294846.390000] EIP is at input_event+0xb8/0x4c0
[4294846.390000] eax: 00000000	ebx: ffffffec	ecx: 00000fe1	edx: 00000000
[4294846.390000] esi: 56ab287c	edi: 00000001	ebp: 0000014a	esp: 4039be54
[4294846.390000] ds: 007b	es: 007b	ss: 0068
[4294846.390000] Process swapper (pid: 0, threadinfo=4039a000 task=40349a40)
[4294846.390000] Stack: 404175c0 0000014f 00000001 00000000 00000001 56ab287c 5b8e2c00 5ebde040
[4294846.390000] 	00000026 612bed51 56ab287c 00000001 0000014a 00000001 00000001 00000004
[4294846.390000]	5b8e2c00 5eab8800 4039bf80 00000000 60dc8c94 5b8e2c00 4039bf80 5eab8800
[4294846.390000] Call Trace:
[4294846.390000]   [<612bed51>] cpad_input_callback+0x2f1/0x330 [cpad]
[4294846.390000]   [<60dc8c94>] usb_hcd_giveback_urb+0x34/0x90 [usbcore]
[4294846.390000]   [<6086ffac>] finish_urb+0x8c/0x110 [ohci_hcd]
[4294846.390000]   [<608713cf>] dl_done_list+0xef/0x110 [ohci_hcd]
[4294846.390000]   [<608720b4>] ohci_irq+0x164/0x200 [ohci_hcd]
[4294846.390000]   [<60dc8d29>] usb_hcd_irq+0x39/0x70 [usbcore]
[4294846.390000]   [<4014ad8d>] handle_IRQ_event+0x3d/0x70
[4294846.390000]   [<4014ae5d>] __do_IRQ+0x9d/0x110
[4294846.390000]   [<40105c99>] do_IRQ+0x19/0x30
[4294846.390000]   [<40103ef6>] common_interrupt+0x1a/0x20
[4294846.390000]   [<60850e9b>] acpi_processor_idle+0x184/0x32d [processor]
[4294846.390000]   [<4010111f>] cpu_idle+0x6f/0xc0
[4294846.390000]   [<403a0a2f>] start_kernel+0x18f/0x1f0
[4294846.390000]   [<403a03c0>] unknown_bootoption+0x0/0x1f0
[4294846.390000] Code: 24 30 8b 6c 24 20 89 7c 24 2c 8b 7c 24 1c 89 5424 28 89 44 24 34 83 c4 24 ff e1 ff 24 bd e0 01 31 40 8b 86 dc 06 00 00 8d 58 ec <8b> 53 14 0f 18 02 90 81 c6 dc 06 00 00 39 c6 75 1b e9 5e ff ff
[4294846.390000]   <0>Kernel panic - not syncing: Fatal exception in interrupt
[4294846.408000]




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