Re: [Bugme-new] [Bug 10752] New: pata_isapnp driver causes the ata layer to go splat

Re: [Bugme-new] [Bug 10752] New: pata_isapnp driver causes the ata layer to go splat

[Andrew Morton]

On Mon, 19 May 2008 14:46:08 -0700 (PDT)
bugme-daemon@bugzilla.kernel.org wrote:

> http://bugzilla.kernel.org/show_bug.cgi?id=10752
> 
>            Summary: pata_isapnp driver causes the ata layer to go splat
>            Product: IO/Storage
>            Version: 2.5
>      KernelVersion: 2.6.25
>           Platform: All
>         OS/Version: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: normal
>           Priority: P1
>          Component: Serial ATA
>         AssignedTo: jgarzik@pobox.com
>         ReportedBy: arjan@linux.intel.com
> 
> 
> This happens quite a bit based on Fedora 9 feedback, but already happened in
> 2.6.24 and possibly earlier.
> 
> http://www.kerneloops.org/search.php?search=bad_io_access
> 
> shows the basic backtrace:
> *bad_io_access
> ioread8
> ata_altstatus
> ata_std_dev_select
> ata_dev_select
> ata_qc_issue_prot
> ata_qc_issue
> ata_exec_internal_sg
> ata_exec_internal
> ata_dev_read_id
> ata_eh_recover
> ata_do_eh
> ata_bmdma_drive_eh
> ata_bmdma_error_handler
> ata_scsi_error
> scsi_error_handler
> kthread
> kernel_thread_helper
> 
> in all cases, this happens while pata_isapnp is being loaded; so it's not
> unlikely that this driver stomps on some other driver which then goes splat
> 

Unclear who maintains pata_isapnp?

Re: [Bugme-new] [Bug 10752] New: pata_isapnp driver causes the ata layer to go splat

[Arjan van de Ven]

On Mon, 19 May 2008 15:25:49 -0700
Andrew Morton <akpm@linux-foundation.org> wrote:

> > 
> 
> Unclear who maintains pata_isapnp?

Alan is on top of this one; he sent a patch to Jeff Garzik already
earlier today
(will attach to the BZ shortly)