[Bug 45542] Re: linux-image-2.6.15-23-686 freezes when using irda

[Olivier Cortès]

Probably not related to the problem, but connected somewhere : I've got
no kIrDAd running on my system... I've tried to sync my WorkPad c505
(rebranded Palm m505c) to my IBM X31 using IrDA, and i couldn't. here's
what I found in my dmesg :

[4294683.956000] Unable to handle kernel NULL pointer dereference at virtual address 00000004
[4294683.956000]  printing eip:
[4294683.956000] c013c886
[4294683.956000] *pde = 00000000
[4294683.956000] Oops: 0002 [#1]
[4294683.956000] PREEMPT SMP
[4294683.956000] Modules linked in: sir_dev nsc_ircc snd_intel8x0 snd_ac97_codec snd_ac97_bus irda snd_pcm_oss snd_mixer_oss crc_ccitt parport_pc snd_pcm snd_timer parport e100 mii pcmcia airo tsdev snd yenta_socket rsrc_nonstatic pcmcia_core soundcore snd_page_alloc psmouse pcspkr serio_raw shpchp pci_hotplug intel_agp agpgart sg sd_mod evdev ext3 jbd usb_storage scsi_mod ide_generic ohci1394 ieee1394 ehci_hcd uhci_hcd usbcore ide_disk piix generic thermal processor
fan capability commoncap vesafb fbcon tileblit font bitblit softcursor
[4294683.956000] CPU:    0
[4294683.956000] EIP:    0060:[<c013c886>]    Not tainted VLI
[4294683.956000] EFLAGS: 00010092   (2.6.15-23-686)
[4294683.956000] EIP is at finish_wait+0x36/0x70
[4294683.956000] eax: 00000202   ebx: dfa27fd8   ecx: 00000000   edx: 00000000
[4294683.956000] esi: dfa27fcc   edi: f914a2a8   ebp: 00000000   esp: dfa27fb4
[4294683.956000] ds: 007b   es: 007b   ss: 0068
[4294683.956000] Process kIrDAd (pid: 3123, threadinfo=dfa26000 task=f792e560)
[4294683.956000] Stack: dfa26000 dfa27fcc 00000000 f9146b83 f9147b20 00000000 00000000 f792e560
[4294683.956000]        c011f4e0 00000000 00000000 f9146ae0 00000000 c0101525 f7a45f74 00000000
[4294683.956000]        00000000 cccccccc cccccccc
[4294683.956000] Call Trace:
[4294683.956000]  [<f9146b83>] irda_thread+0xa3/0xe0 [sir_dev]
[4294683.956000]  [<c011f4e0>] default_wake_function+0x0/0x20
[4294683.956000]  [<f9146ae0>] irda_thread+0x0/0xe0 [sir_dev]
[4294683.956000]  [<c0101525>] kernel_thread_helper+0x5/0x10
[4294683.956000] Code: 24 04 89 d6 89 7c 24 08 89 c7 b8 00 e0 ff ff 21 e0 8b 00 c7 00 00 00 00 00 3b 5a 0c 7
4 2f 89 f8 e8 a0 fe 1c 00 8b 53 04 8b 4e 0c <89> 51 04 89 0a 89 c2 89 f8 89 5e 0c 89 5b 04 8b 1c 24 8b 74 24
[4294683.956000]  <6>note: kIrDAd[3123] exited with preempt_count 1

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linux-image-2.6.15-23-686 freezes when using irda
https://launchpad.net/bugs/45542