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User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.8.0.10) Gecko/20070313 Fedora/1.5.0.10-5.fc6 Firefox/1.5.0.10

Description of problem:
On boot the system gives out the following messages:

------------------------------------------------
JMB363: BIOS configuration fixed.
JMB363: chipset revision 2
JMB363: 100% native mode on irq 16
JMB363: dma_base is invalid
ide0: JMB363 Bus-Master DMA disabled (BIOS)
JMB363: dma_base is invalid
ide1: JMB363 Bus-Master DMA disabled (BIOS)
Probing IDE interface ide0...
Probing IDE interface ide1...
JMB363: IDE controller at PCI slot 0000:03:00.1
----------------------------------------------

The system can boot without any other problem but from time to time it would freeze and when that happens it outputs a "soft lockup" error like below:

---------------------------------
BUG: soft lockup detected on CPU#1!
kernel:
kernel: Call Trace:
kernel:  <IRQ>  [<ffffffff802b1004>] softlockup_tick+0xdb/0xf6
kernel:  [<ffffffff8028f925>] update_process_times+0x42/0x68
kernel:  [<ffffffff80272084>] smp_local_timer_interrupt+0x34/0x55
kernel:  [<ffffffff80272760>] smp_apic_timer_interrupt+0x51/0x69
kernel:  [<ffffffff8025ace6>] apic_timer_interrupt+0x66/0x70
kernel:  <EOI>  [<ffffffff8031df4a>] selinux_inode_permission+0x0/0x9d
kernel:  [<ffffffff80318457>] avc_has_perm_noaudit+0xa3/0x370
kernel:  [<ffffffff80219fe2>] vsnprintf+0x55f/0x5a3
kernel:  [<ffffffff80319334>] avc_has_perm+0x28/0x58
kernel:  [<ffffffff80319f33>] inode_has_perm+0x56/0x63
kernel:  [<ffffffff802094e7>] __link_path_walk+0x178/0xdb0
kernel:  [<ffffffff8020e74f>] link_path_walk+0x55/0xd7
kernel:  [<ffffffff802159c2>] get_unused_fd+0xf9/0x107
kernel:  [<ffffffff8020c8d4>] do_path_lookup+0x1b5/0x217
kernel:  [<ffffffff8022355a>] __path_lookup_intent_open+0x56/0x97
kernel:  [<ffffffff8021a8fb>] open_namei+0x78/0x644
kernel:  [<ffffffff8022732a>] do_filp_open+0x1c/0x38
kernel:  [<ffffffff802159c2>] get_unused_fd+0xf9/0x107
kernel:  [<ffffffff80219669>] do_sys_open+0x44/0xc1
kernel:  [<ffffffff8025a11e>] system_call+0x7e/0x83
--------------------------------------------------------






Version-Release number of selected component (if applicable):
kernel-2.6.20-1.2933.fc6

How reproducible:
Always


Steps to Reproduce:
1. Boot 
2. When the system is up and running then just wait
3.

Actual Results:


Expected Results:
No system freee.

Not sure if the "dma_base" and the "soft lockup" are related.

Additional info:
Configuration:
--------------
CPU: Intel Core 2 Duo E6400
MB: Asus P5B-VM 
1 SATA and 2 PATA Drives