[Bug 40090] Unable to handle kernel NULL pointer dereference at virtual address 00000094

[Peter Kropf]

Public bug reported:

Affects: linux-source-2.6.15 linux-image-2.6.15-20-686 (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: Unconfirmed


Description:
This error occurs when trying to sync a Palm T/X with the Gnome Pilot
applet. This occurs on a Thinkpad T41p running Ubuntu 6.06.

Here's the details from /var/log/messages:

Apr 18 20:37:13 localhost kernel: [4322377.819000]  <1>Unable to handle kernel NULL pointer dereference at virtual address 00000094
Apr 18 20:37:13 localhost kernel: [4322381.906000] f910d9f2
Apr 18 20:37:13 localhost kernel: [4322381.906000] PREEMPT SMP
Apr 18 20:37:13 localhost kernel: [4322381.906000] Modules linked in: visor usbserial arc4 ieee80211_crypt_wep vmnet vmmon binfmt_misc rfcomm l2cap bluetooth ipv6 nvram uinput radeon drm autofs4 speedstep_centrino cpufreq_powersave cpufreq_stats cpufreq_userspace cpufreq_ondemand cpufreq_conservative freq_table tc1100_wmi video acpi_sbs battery ibm_acpi i2c_acpi_ec i2c_core container button pcc_acpi sony_acpi ac dev_acpi hotkey nls_cp437 ntfs dm_mod md_mod lp af_packet usbhid tsdev irtty_sir joydev sir_dev parport_pc parport nsc_ircc irda psmouse serio_raw pcmcia crc_ccitt pcspkr rtc e1000 ipw2100 ieee80211 ieee80211_crypt snd_intel8x0 snd_ac97_codec snd_ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore snd_page_alloc yenta_socket rsrc_nonstatic pcmcia_core intel_agp agpgart shpchp pci_hotplug hw_random evdev reiserfs 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
Apr 18 20:37:13 localhost kernel: [4322381.906000] CPU:    0
Apr 18 20:37:13 localhost kernel: [4322381.906000] EIP:    0060:[pg0+952859122/1069188096]    Tainted: P      VLI
Apr 18 20:37:13 localhost kernel: [4322381.906000] EFLAGS: 00210246   (2.6.15-20-686)
Apr 18 20:37:13 localhost kernel: [4322381.906000] EIP is at serial_ioctl+0x32/0x100 [usbserial]
Apr 18 20:37:13 localhost kernel: [4322381.906000] eax: 00000000   ebx: 00000000   ecx: e7ea1ec0   edx: bfff3988
Apr 18 20:37:13 localhost kernel: [4322381.906000] esi: 00005401   edi: bfff3988   ebp: e7ea1ec0   esp: f461fef8
Apr 18 20:37:13 localhost kernel: [4322381.906000] ds: 007b   es: 007b   ss: 0068
Apr 18 20:37:13 localhost kernel: [4322381.906000] Process gpilotd (pid: 23113, threadinfo=f461e000 task=dffeaa90)
Apr 18 20:37:13 localhost kernel: [4322381.906000] Stack: c016f309 e7ea1f0c f4be7cf0 e7ea1ec0 f461ff44 e7ea1ec0 fffffff8 cc3d1000
Apr 18 20:37:13 localhost kernel: [4322381.906000]        00005401 c023f74b cc3d1000 e7ea1ec0 00005401 bfff3988 bfff3988 e7ea1ec0
Apr 18 20:37:13 localhost kernel: [4322381.906000]        cc3d1000 e7ea1ec0 bfff3988 00005401 00000024 c01857b3 f4be7c38 e7ea1ec0
Apr 18 20:37:13 localhost kernel: [4322381.906000] Call Trace:
Apr 18 20:37:13 localhost kernel: [4322381.906000]  [__dentry_open+265/640] __dentry_open+0x109/0x280
Apr 18 20:37:13 localhost kernel: [4322381.906000]  [tty_ioctl+171/1456] tty_ioctl+0xab/0x5b0
Apr 18 20:37:13 localhost kernel: [4322381.906000]  [do_ioctl+147/160] do_ioctl+0x93/0xa0
Apr 18 20:37:13 localhost kernel: [4322381.906000]  [vfs_ioctl+107/560] vfs_ioctl+0x6b/0x230
Apr 18 20:37:13 localhost kernel: [4322381.906000]  [fd_install+50/112] fd_install+0x32/0x70
Apr 18 20:37:13 localhost kernel: [4322381.906000]  [sys_ioctl+136/160] sys_ioctl+0x88/0xa0
Apr 18 20:37:13 localhost kernel: [4322381.906000]  [sysenter_past_esp+84/117] sysenter_past_esp+0x54/0x75
Apr 18 20:37:13 localhost kernel: [4322381.906000] Code: 89 74 24 18 8b 74 24 30 89 7c 24 1c 8b 7c 24 34 89 6c 24 20 8b 6c 24 2c 89 5c 24 14 8b 98 94 09 00 00 a1 64 4d 11 f9 85 c0 75 6e <8b> 8b 94 00 00 00 85 c9 75 27 8b 15 64 4d 11 f9 b8 ed ff ff ff

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Unable to handle kernel NULL pointer dereference at virtual address 00000094
https://launchpad.net/bugs/40090