Subject: Re: 2.6.21-rc3-git4 ata1.00: qc timeout (cmd 0xef) (crashdump kernel)

From: Tejun Heo <[email-masked]>
Date: Tue, 13 Mar 2007 01:37:13 +0900

Michal Piotrowski wrote:
> Calling initcall 0xc19154d8: piix_ide_init+0x0/0xbb()
> Calling initcall 0xc19155b6: generic_ide_init+0x0/0x16()
> Calling initcall 0xc191572e: ide_init+0x0/0x81()
> Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
> ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
> ICH5: IDE controller at PCI slot 0000:00:1f.1
> irq 5: nobody cared (try booting with the "irqpoll" option)
>  [<c1604556>] show_trace_log_lvl+0x1a/0x2f
>  [<c1604c2c>] show_trace+0x12/0x14
>  [<c1604cde>] dump_stack+0x16/0x18
>  [<c164341c>] __report_bad_irq+0x39/0x79
>  [<c16435eb>] note_interrupt+0x18f/0x1c8
>  [<c1643ec6>] handle_level_irq+0x95/0xcb
>  [<c1605dd8>] do_IRQ+0xb4/0xe0
>  =======================
> handlers:
> [<c174f55e>] (skge_intr+0x0/0x3ff)
> Disabling IRQ #5
> ACPI: PCI Interrupt Link [LNKC] enabled at IRQ 5
> ACPI: PCI Interrupt 0000:00:1f.1[A] -> Link [LNKC] -> GSI 5 (level, low) -> IRQ 5
> ICH5: chipset revision 2
> ICH5: not 100% native mode: will probe irqs later
>     ide0: BM-DMA at 0xfc00-0xfc07, BIOS settings: hda:DMA, hdb:DMA
>     ide1: BM-DMA at 0xfc08-0xfc0f, BIOS settings: hdc:pio, hdd:DMA
> 
> Is this an IDE or skge bug?

It seems skge's.  skge is screaming and kernel shuts down IRQ 5.
ata_piix is unfortunately sharing the IRQ, so its IRQ doesn't get
serviced and commands time out.

-- 
tejun