Can you try this patch?
If it fixes the oops, I'll forward upstream ASAP.
Jeff,
It fixes the oops (pasted below) for me; please do push it ASAP.
thanks, BR
xlated vfy cmd LBA 0x14f500 cnt 20 ahci_interrupt: int on port 2 ahci_host_intr: fatal int seen ahci_intr_error: port 2 irq_stat 0x40000001 struct ata_port *ap = 0xc1bf79bc ap->ioaddr.error_addr = 0x00000000
Unable to handle kernel NULL pointer dereference at virtual address 00000000
printing eip:
c0279bfd
*pde = 00000000
Oops: 0000 [#1]
Modules linked in: af_packet ipmi_devintf ipmi_msghandler
CPU: 0
EIP: 0060:[<c0279bfd>] Not tainted VLI
EFLAGS: 00010202 (2.6.11-rc4)
EIP is at ata_to_sense_error+0x22d/0x3a0
eax: 00000000 ebx: ffffffff ecx: 563ff726 edx: 000007bf
esi: c1bf79bc edi: c1bf08bc ebp: 00000000 esp: c03a5ed4
ds: 007b es: 007b ss: 0068
Process swapper (pid: 0, threadinfo=c03a4000 task=c0350b20)
Stack: c0329736 00000000 00000282 001f7934 c1bf0800 01000246 c1bf7e78 c1bf0800
c1bf7e78 40000001 c1bf7e78 c027a48e c1bf7e78 c1bf79bc c0277fd4 c0333e88
00000002 00000002 40000001 00000002 01bf79bc 00000002 c027baa2 c032995e
Call Trace:
[<c027a48e>] ata_scsi_qc_complete+0x5e/0x60
[<c0277fd4>] ata_qc_complete+0x34/0xf0
[<c027baa2>] ahci_interrupt+0x152/0x1a0
[<c012b082>] handle_IRQ_event+0x32/0x70
[<c012b167>] __do_IRQ+0xa7/0x110
[<c01044a6>] do_IRQ+0x36/0x70
[<c0102cf2>] common_interrupt+0x1a/0x20
[<c0100675>] mwait_idle+0x25/0x50
[<c0100609>] cpu_idle+0x49/0x60
[<c03a680a>] start_kernel+0x16a/0x1b0
[<c03a6380>] unknown_bootoption+0x0/0x1e0
Code: e9 ff 8d b6 00 00 00 00 8d bf 00 00 00 00 b8 58 89 41 00 4b e8 e5 e6 f7 f
<0>Kernel panic - not syncing: Fatal exception in interrupt
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