Re: [PATCH 2/2 v2] ATA: piix, fix pointer deref on suspend

[Andrew Morton]

On Tue,  9 Dec 2008 21:52:28 +0100
Jiri Slaby <jirislaby@xxxxxxxxx> wrote:

> Commit
> ata_piix: add borked Tecra M4 to broken suspend list
> introduced DMI variables checking, but they can be null, so that
> we possibly dereference null.
> 
> Check if they are null and avoid checks in that case.
> 
> Solves:
> BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
> IP: [<ffffffff8043da97>] piix_pci_device_suspend+0x117/0x230

This already got fixed, the nasty way.

I queued "DMI: add dmi_match".  We can later switch the piix nastyfix
over to the nicefix as a cleanup.

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