Re: [PATCH 1/1] ATA: piix, fix pointer deref on suspend

From: Tejun Heo
Date: Wed Dec 03 2008 - 04:04:56 EST

Jiri Slaby wrote:
> Hi,
> I've found this issue in the mmotm 2008-12-02-17-08.
> --
> 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
> Signed-off-by: Jiri Slaby <jirislaby@xxxxxxxxx>
> Cc: Jeff Garzik <jgarzik@xxxxxxxxxx>
> Cc: Alexandru Romanescu <a_romanescu@xxxxxxxxxxx>
> Cc: Tejun Heo <tj@xxxxxxxxxx>


Acked-by: Tejun Heo <tj@xxxxxxxxxx>

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at