[Bug 43686] kpilot stops responding

[Lynoure Braakman]

Public bug reported:

kpilot starts fine once, starts doing a sync, gets stuck at 0%. After refresh of link it stops responding.
>From that on whenever I try to start kpilot from the menus, it starts two kpilots, both of which then stop responding pretty much instantly.

I'm using up to date dapper and my palm pilot is Tungsten E. Couple of
weeks ago kpilot worked fine for me.

       
>From dmesg:

[4294816.092000] usb 1-1: new full speed USB device using uhci_hcd and address 2
[4294816.394000] usbcore: registered new driver usbserial
[4294816.394000] drivers/usb/serial/usb-serial.c: USB Serial support registered for generic
[4294816.395000] usbcore: registered new driver usbserial_generic
[4294816.395000] drivers/usb/serial/usb-serial.c: USB Serial Driver core
[4294816.398000] drivers/usb/serial/usb-serial.c: USB Serial support registered for Handspring Visor / Palm OS
[4294816.398000] drivers/usb/serial/usb-serial.c: USB Serial support registered for Sony Clie 3.5
[4294816.399000] drivers/usb/serial/usb-serial.c: USB Serial support registered for Sony Clie 5.0
[4294816.401000] visor 1-1:1.0: Handspring Visor / Palm OS converter detected
[4294816.401000] usb 1-1: Handspring Visor / Palm OS converter now attached to ttyUSB0
[4294816.402000] usb 1-1: Handspring Visor / Palm OS converter now attached to ttyUSB1
[4294816.402000] usbcore: registered new driver visor
[4294816.402000] drivers/usb/serial/visor.c: USB HandSpring Visor / Palm OS driver
[4294824.138000] Unable to handle kernel NULL pointer dereference at virtual address 00000084
[4294824.138000]  printing eip:
[4294824.138000] e15a9724
[4294824.138000] *pde = 00000000
[4294824.138000] Oops: 0000 [#1]
[4294824.138000] PREEMPT
[4294824.138000] Modules linked in: visor usbserial michael_mic arc4 ieee80211_crypt_tkip af_packet ipv6 radeon drm rfcomm l2cap speedstep_centrino cpufreq_userspace cpufreq_stats freq_table cpufreq_powersave cpufreq_ondemand cpufreq_conservative video tc1100_wmi sony_acpi pcc_acpi hotkey dev_acpi container button acpi_sbs battery ac i2c_acpi_ec i2c_core dm_mod md_mod sr_mod sbp2 scsi_mod lp pcmcia joydev tsdev pcspkr parport_pc parport rtc tpm_infineon tpm yenta_socket rsrc_nonstatic ipw2200 sdhci pcmcia_core ieee80211 ieee80211_crypt mmc_core snd_intel8x0 snd_ac97_codec snd_ac97_bus hci_usb snd_pcm_oss snd_mixer_oss tg3 bluetooth snd_pcm snd_timer snd ohci1394 ieee1394 soundcore snd_page_alloc psmouse serio_raw shpchp pci_hotplug intel_agp agpgart evdev ext3 jbd ide_generic ehci_hcd uhci_hcd usbcore ide_cd cdrom ide_disk piix generic thermal processor fan capability commoncap vga16fb vgastate fbcon tileblit font bitblit softcursor
[4294824.138000] CPU:    0
[4294824.138000] EIP:    0060:[<e15a9724>]    Not tainted VLI
[4294824.138000] EFLAGS: 00210246   (2.6.15-21-386)
[4294824.138000] EIP is at serial_chars_in_buffer+0x14/0x80 [usbserial]
[4294824.138000] eax: 00000000   ebx: 00000000   ecx: cc6c00c0   edx: cca69a40
[4294824.138000] esi: 00000000   edi: cc6c00c0   ebp: 00000015   esp: d2b5bebc
[4294824.138000] ds: 007b   es: 007b   ss: 0068
[4294824.138000] Process kpilotDaemon (pid: 5027, threadinfo=d2b5a000 task=d23b9030)
[4294824.138000] Stack: dafef000 c022396c dafef000 dafef000 cc6c00c0 dafef00c c021f4b9 dafef000
[4294824.138000]        cc6c00c0 00000000 cc6c00c0 00000800 0000000b c0173b64 cc6c00c0 00000000
[4294824.138000]        00000000 0000000c 00000000 d27103ec d27103f0 d27103f4 d27103e4 d27103e8
[4294824.138000] Call Trace:
[4294824.138000]  [<c022396c>] normal_poll+0x13c/0x16f
[4294824.138000]  [<c021f4b9>] tty_poll+0x49/0x70
[4294824.138000]  [<c0173b64>] do_select+0x194/0x380
[4294824.138000]  [<c0173820>] __pollwait+0x0/0xb0
[4294824.138000]  [<c0173f84>] sys_select+0x204/0x3a0
[4294824.138000]  [<c010302b>] sysenter_past_esp+0x54/0x79
[4294824.138000] Code: 68 e7 c7 5a e1 e8 dd 2f b7 de 83 c4 0c eb e0 90 8d b4 26 00 00 00 00 53 8b 44 24 08 8b 98 74 09 00 00 a1 04 06 5b e1 85 c0 75 1c <8b> 83 84 00 00 00 85 c0 74 31 8b 03 8b 40 04 89 5c 24 08 8b 88
[4294824.138000]  <6>usb 1-1: USB disconnect, address 2
[4294865.386000] visor 1-1:1.0: device disconnected

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

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kpilot stops responding
https://launchpad.net/bugs/43686