linux-kernel - Re: [BUG] scsi_device.device == NULL in sd_revalidate

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Mon, 5 Mar 2012 16:11:46 -0800
From:	Fengguang Wu <fengguang.wu@...el.com>
To:	Josh Boyer <jwboyer@...il.com>
Cc:	"linux-fsdevel@...r.kernel.o..." <linux-fsdevel@...r.kernel.org>,
	"linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>, Jens Axboe <axboe@...nel.dk>
Subject: Re: [BUG] scsi_device.device == NULL in sd_revalidate_disk()

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@...el.com> wrote:
> > Hi,
> >
> > I ran into a NULL dereference bug on USB key hot remove, which should
> > be caused by the below skdp->device reference
> >
> >        static int sd_revalidate_disk(struct gendisk *disk)
> >        {
> >                struct scsi_disk *sdkp = scsi_disk(disk);
> > ==>             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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/