Comment 12 for bug 195829

I've also the same problem on module loading

# sudo modprobe snd-bt-sco
Segmentation fault
# dmesg
[ 7726.455853] snd-bt-sco revision 1.19 $
[ 7726.455880] snd-bt-sco: snd-bt-scod thread starting
[ 7726.456009] BUG: unable to handle kernel NULL pointer dereference at virtual address 00000001
[ 7726.456014] printing eip: f8ea0745 *pde = 00000000
[ 7726.456019] Oops: 0000 [#1] SMP
[ 7726.456023] Modules linked in: snd_bt_sco vmnet(P) vmmon(P) binfmt_misc rfcomm l2cap af_packet ppdev ipv6 acpi_cpufreq cpufreq_ondemand cpufreq_conservative cpufreq_stats freq_table cpufreq_userspace cpufreq_powersave sbs sbshc dock iptable_filter ip_tables x_tables nls_iso8859_1 nls_cp437 vfat fat aes_i586 dm_crypt dm_mod arc4 ecb blkcipher iwl3945 iwlwifi_mac80211 cfg80211 sbp2 parport_pc lp parport joydev snd_hda_intel snd_pcm_oss snd_mixer_oss snd_pcm fglrx(P) sg sr_mod snd_hwdep cdrom pcmcia snd_seq_dummy snd_seq_oss snd_seq_midi container snd_rawmidi snd_seq_midi_event video output snd_seq psmouse snd_timer serio_raw snd_seq_device battery ac snd button pcspkr soundcore evdev ext3 jbd mbcache sd_mod hci_usb bluetooth ata_piix ata_generic e100 sdhci mii tifm_7xx1 ohci1394 mmc_core tifm_core pata_acpi iTCO_wdt yenta_socket rsrc_nonstatic pcmcia_core ieee1394 iTCO_vendor_support libata scsi_mod ehci_hcd uhci_hcd usbcore snd_page_alloc shpchp pci_hotplug intel_agp agpgart thermal processor fan fuse vesafb fbcon tileblit font bitblit softcursor
[ 7726.456095]
[ 7726.456098] Pid: 12932, comm: modprobe Tainted: P (2.6.24-12-generic #1)
[ 7726.456101] EIP: 0060:[<f8ea0745>] EFLAGS: 00010246 CPU: 0
[ 7726.456117] EIP is at snd_pcm_timer_init+0x25/0x170 [snd_pcm]
[ 7726.456120] EAX: 00000001 EBX: f6c1b800 ECX: ec0bfdfc EDX: 00000000
[ 7726.456122] ESI: dfa2c780 EDI: f6c1b234 EBP: 00000018 ESP: ec0bfde4
[ 7726.456125] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[ 7726.456128] Process modprobe (pid: 12932, ti=ec0be000 task=f6b1b0e0 task.ti=ec0be000)
[ 7726.456130] Stack: 00000000 00000001 f6ae3e00 00000000 f6ae3e00 00000000 00000003 00000000
[ 7726.456137] f6c1b800 00000018 f8dd020c 00000000 dfa2c780 f6c1b200 f8e9867f f8ea992c
[ 7726.456143] f6c1b200 ec0bfe38 f6c1b000 00000001 f8ea15f4 436d6370 63304431 ffffff00
[ 7726.456149] Call Trace:
[ 7726.456173] [<f8dd020c>] snd_add_device_sysfs_file+0x3c/0x70 [snd]
[ 7726.456194] [<f8e9867f>] snd_pcm_dev_register+0xef/0x200 [snd_pcm]
[ 7726.456223] [<f8dd4e4d>] snd_device_register_all+0x2d/0x60 [snd]
[ 7726.456241] [<f8dd0a1e>] snd_card_register+0x1e/0x320 [snd]
[ 7726.456265] [<f90592d7>] alsa_card_bt_sco_init+0x277/0x2be [snd_bt_sco]
[ 7726.456279] [<c01516c6>] sys_init_module+0x126/0x19c0
[ 7726.456320] [<c0138540>] sigprocmask+0x0/0x110
[ 7726.456338] [<c01053c2>] sysenter_past_esp+0x6b/0xa9
[ 7726.456358] =======================
[ 7726.456359] Code: 5b c3 8d 74 26 00 56 89 c6 53 83 ec 30 8b 56 30 c7 44 24 1c 00 00 00 00 8d 4c 24 18 c7 44 24 18 03 00 00 00 8b 18 83 e2 01 8b 03 <8b> 00 89 44 24 20 8b 43 0c 89 44 24 24 8b 46 0c 01 c0 09 c2 8d
[ 7726.456391] EIP: [<f8ea0745>] snd_pcm_timer_init+0x25/0x170 [snd_pcm] SS:ESP 0068:ec0bfde4
[ 7726.456404] ---[ end trace b1183a475424ec05 ]---

My hardy is ready to make more tests if you want