Description of problem:
FC4 x86_64 kernel 2.6.15-1.1833_FC4smp
Dell Precision 370 Workstation
Problematic disk:
Device Model:     Maxtor 7V250F0
Serial Number:    V59145RG    V59145RG
Firmware Version: VA131610
User Capacity:    250,000,000,000 bytes
Device is:        Not in smartctl database [for details use: -P showall]
ATA Version is:   7
ATA Standard is:  ATA/ATAPI-7 T13 1532D revision 0
Local Time is:    Sat Mar 18 08:35:44 2006 CST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

Something like this has happened twice now in the last week on this system.

ata2: port reset, p_is 40000001 is 2 pis 0 cmd 4017 tf 37 ss 113 se 0
ata2: handling error/timeout
ata2: port reset, p_is 0 is 0 pis 0 cmd c017 tf b7 ss 113 se 0
ata2: translated ATA stat/err 0x37/00 to SCSI SK/ASC/ASCQ 0x4/00/00
ata2: status=0x37 { DeviceFault SeekComplete CorrectedError Index Error }
end_request: I/O error, dev sdb, sector 104438335
raid1: Disk failure on sdb2, disabling device.
        Operation continuing on 1 devices
BUG: spinlock recursion on CPU#0, scsi_eh_1/502 (Not tainted)
 lock: ffff81007e74f2c0, .magic: dead4ead, .owner: scsi_eh_1/502, .owner_cpu: 0

so of course we're dead.  I'll upload the whole crash.

Version-Release number of selected component (if applicable):
2.6.15-1.1833_FC4smp

How reproducible:
occasional

Steps to Reproduce:
1. wait
2.
3.
  
Actual results:
crash

Expected results:
a) no port timeout failure
b) disk taken offline if there was a failure, no crash.

Additional info: