[Bug 47718] kIrDAd crashes on startup on ThinkPad R52

[Paul Sladen]

Public bug reported:

On a ThinkPad R52, kIrDAd crashes with a backtrace on startup:


[4294751.143000] **** SET: Misaligned resource pointer: db689c42 Type 00 Len 42
[4294751.143000] **** SET: Misaligned resource pointer: db689cc6 Type 07 Len 0
[4294751.143000] pnp: Device 00:0b activated.
[4294751.143000] nsc_ircc_pnp_probe() : Found cfg_base 0x000 ; firbase 0x2F8 ; irq 3 ; dma 1.
[4294751.143000] nsc-ircc, Found chip at base=0x000
[4294751.143000] nsc-ircc, driver loaded (Dag Brattli)
[4294751.143000] IrDA: Registered device irda0
[4294751.143000] nsc-ircc, Found dongle: No dongle connected
[4294751.143000] nsc_ircc_init_dongle_interface(), No dongle connected
[4294751.186000] shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
[4294751.294000] Unable to handle kernel NULL pointer dereference at virtual address 00000004
[4294751.294000]  printing eip:
[4294751.294000] c013112f
[4294751.294000] *pde = 00000000
[4294751.294000] Oops: 0002 [#1]
[4294751.294000] PREEMPT 
[4294751.294000] Modules linked in: shpchp sir_dev nsc_ircc tsdev af_packet rtc floppy snd_pcm parport intel_agp psmouse serio_raw snd_timer snd soundcore pci_hotplug irda crc_ccitt snd_page_alloc agpgart pcspkr sg evdev tg3 squashfs unionfs loop nls_cp437 isofs ide_generic ehci_hcd uhci_hcd usbcore ohci1394 ieee1394 sr_mod cdrom generic ata_piix ahci libata scsi_mod thermal processor fan capability commoncap vga16fb vgastate fbcon tileblit font bitblit softcursor
[4294751.294000] CPU:    0
[4294751.294000] EIP:    0060:[<c013112f>]    Not tainted VLI
[4294751.294000] EFLAGS: 00010002   (2.6.15-23-386) 
[4294751.294000] EIP is at finish_wait+0x2f/0x70
[4294751.294000] eax: de7c2000   ebx: 00000286   ecx: 00000000   edx: 00000000
[4294751.294000] esi: de7c3fd8   edi: de7c3fcc   ebp: 00000000   esp: de7c3fbc
[4294751.294000] ds: 007b   es: 007b   ss: 0068
[4294751.294000] Process kIrDAd (pid: 4764, threadinfo=de7c2000 task=de7a4550)
[4294751.294000] Stack: de7c2000 00000000 00000000 e0349840 00000000 de7a4550 c0118940 00000000 
[4294751.294000]        00000000 e0349790 00000000 c0101385 d0a61f98 00000000 00000000 08ca08c8 
[4294751.294000]        a0a0a5a0 
[4294751.294000] Call Trace:
[4294751.294000]  [<e0349840>] irda_thread+0xb0/0xf0 [sir_dev]
[4294751.294000]  [<c0118940>] default_wake_function+0x0/0x20
[4294751.294000]  [<e0349790>] irda_thread+0x0/0xf0 [sir_dev]
[4294751.294000]  [<c0101385>] kernel_thread_helper+0x5/0x10
[4294751.294000] Code: d7 b8 00 e0 ff ff 21 e0 8b 00 c7 00 00 00 00 00 8d 72 0c 3b 72 0c 74 34 9c 5b fa b8 00 e0 ff ff 21 e0 ff 40 14 8b 4f 0c 8b 56 04 <89> 51 04 89 0a 89 77 0c 89 76 04 53 9d ff 48 14 8b 40 08 a8 08 
[4294751.294000]  <6>note: kIrDAd[4764] exited with preempt_count 1
[4294751.423000] ACPI: PCI Interrupt 0000:04:00.0[A] -> GSI 16 (level, low) -> IRQ 185

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

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kIrDAd crashes on startup on ThinkPad R52
https://launchpad.net/bugs/47718