BUG: unable to handle kernel NULL pointer dereference at 00000038
IP: [<c0425ae4>] scheduler_tick+0x94/0x17a
Oops: 0000 [#1] SMP 
Modules linked in: snd_sbxfi snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore snd_page_alloc lp nfsd auth_rpcgss exportfs bridge bnep rfcomm l2cap bluetooth nfs lockd nfs_acl fuse sunrpc sr_mod cdrom dm_mirror dm_log dm_multipath dm_mod ppdev parport_pc parport floppy pcspkr i2c_i801 e100 mii sg iTCO_wdt iTCO_vendor_support usb_storage i915 drm i2c_algo_bit i2c_core pata_acpi ata_piix ata_generic libata sd_mod scsi_mod raid456 async_xor async_memcpy async_tx xor raid1 ext3 jbd mbcache uhci_hcd ohci_hcd ehci_hcd [last unloaded: microcode]

Pid: 0, comm:  Not tainted (2.6.26.5-45.fc9.i686 #1)
EIP: 0060:[<c0425ae4>] EFLAGS: 00210046 CPU: 0
EIP is at scheduler_tick+0x94/0x17a
EAX: c13fba80 EBX: 00000000 ECX: 00000000 EDX: dd9c9900
ESI: c13fba80 EDI: 00000010 EBP: dda80b4c ESP: dda80b30
 DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Process  (pid: 0, ti=dda80000 task=dd9c9900 task.ti=00000000)
Stack: 000003ff dd9c9900 00000000 00000400 00000000 00000000 dd9c9900 dda80b60 
       c043102d c13f85a4 80fcf224 0000007c dda80b78 c0441c00 dda80be0 c13f85a4 
       7fffffff c13f8518 dda80b90 c043bc45 c13f8550 ffffffff 7fffffff c13f85a4 
Call Trace:
 [<c043102d>] ? update_process_times+0x3d/0x49
 [<c0441c00>] ? tick_sched_timer+0x6d/0xa5
 [<c043bc45>] ? __run_hrtimer+0x4c/0x83
 [<c043c618>] ? hrtimer_interrupt+0xef/0x152
 [<c0414207>] ? smp_apic_timer_interrupt+0x69/0x7c
 [<c04056a8>] ? apic_timer_interrupt+0x28/0x30
 [<e05a57ac>] ? sbxfi_pcm_hw_params+0xfc/0x18d [snd_sbxfi]
 [<e05167c7>] ? snd_pcm_hw_params+0xeb/0x2b0 [snd_pcm]
 [<e0516d34>] ? snd_pcm_common_ioctl1+0x269/0x1533 [snd_pcm]
 [<e051a8fc>] ? snd_pcm_hw_param_first+0x126/0x158 [snd_pcm]
 [<e05186b6>] ? snd_pcm_playback_ioctl1+0x360/0x377 [snd_pcm]
 [<e0518738>] ? snd_pcm_kernel_ioctl+0x38/0x60 [snd_pcm]
 [<e052b97a>] ? snd_pcm_oss_change_params+0x967/0xc89 [snd_pcm_oss]
 [<e052c418>] ? snd_pcm_oss_get_active_substream+0x29/0x70 [snd_pcm_oss]
 [<e052c4e9>] ? snd_pcm_oss_get_formats+0x11/0xba [snd_pcm_oss]
 [<c043c50d>] ? ktime_get+0x13/0x2f
 [<e052cf21>] ? snd_pcm_oss_ioctl+0x3b1/0xafe [snd_pcm_oss]
 [<e052cb70>] ? snd_pcm_oss_ioctl+0x0/0xafe [snd_pcm_oss]
 [<c048ffd6>] ? vfs_ioctl+0x22/0x69
 [<c0490256>] ? do_vfs_ioctl+0x239/0x24c
 [<c04d54c9>] ? selinux_file_ioctl+0xa8/0xab
 [<c04902a9>] ? sys_ioctl+0x40/0x5b
 [<c0404c32>] ? syscall_call+0x7/0xb
 =======================
Code: fa 39 4d f0 0f 46 55 f0 0f af c1 88 d9 01 c2 d3 ea 89 54 9e 08 43 83 fb 05 74 04 01 ff eb d6 8b 45 e8 31 c9 8b 58 24 89 c2 89 f0 <ff> 53 38 f0 fe 06 8b 55 ec b8 80 2a 7a c0 8b 0c 95 80 23 75 c0 
EIP: [<c0425ae4>] scheduler_tick+0x94/0x17a SS:ESP 0068:dda80b30
Kernel panic - not syncing: Fatal exception in interrupt