Re: [BUG] scsi_device.device == NULL in sd_revalidate_disk()

From: Fengguang Wu
Date: Mon Mar 05 2012 - 19:11:44 EST


On Mon, Mar 05, 2012 at 07:02:08PM -0500, Josh Boyer wrote:
> On Mon, Mar 5, 2012 at 6:41 PM, Fengguang Wu <fengguang.wu@xxxxxxxxx> wrote:
> > Hi,
> >
> > I ran into a NULL dereference bug on USB key hot remove, which should
> > be caused by the below skdp->device reference
> >
> > Â Â Â Âstatic int sd_revalidate_disk(struct gendisk *disk)
> > Â Â Â Â{
> > Â Â Â Â Â Â Â Âstruct scsi_disk *sdkp = scsi_disk(disk);
> > ==> Â Â Â Â Â Â struct scsi_device *sdp = sdkp->device;
>
> This has been reported numerous times. There are patches to the block layer
> that are supposed to fix it, but they haven't hit Linus' tree yet. I think
> we're waiting on Jens to push them.

OK, thanks for the information!

Thanks,
Fengguang
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