linux-kernel - Re: [PATCH v2] scsi: virtio_scsi: Fix poential NULL pointer dereference in virtscsi_rescan

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Message-ID: <CAJedcCyNbG85=zwGaTFBO0q8x1bKNBsNueVBfoMRpeqRJp500g@mail.gmail.com>
Date:   Fri, 17 Feb 2023 17:12:55 +0800
From:   Zheng Hacker <hackerzheng666@...il.com>
To:     Stefan Hajnoczi <stefanha@...hat.com>
Cc:     "Michael S. Tsirkin" <mst@...hat.com>,
        Zheng Wang <zyytlz.wz@....com>, jasowang@...hat.com,
        pbonzini@...hat.com, jejb@...ux.ibm.com,
        martin.petersen@...cle.com,
        virtualization@...ts.linux-foundation.org,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        security@...nel.org, alex000young@...il.com
Subject: Re: [PATCH v2] scsi: virtio_scsi: Fix poential NULL pointer
 dereference in virtscsi_rescan_hotunplug

Get it ^^

Thanks,
Zheng

Stefan Hajnoczi <stefanha@...hat.com> 于2023年2月15日周三 00:42写道：
>
> On Mon, Feb 13, 2023 at 07:09:50AM -0500, Michael S. Tsirkin wrote:
> > On Thu, Feb 02, 2023 at 02:41:24PM +0800, Zheng Wang wrote:
> > > There is no check about the return value of kmalloc in
> > > virtscsi_rescan_hotunplug. Add the check to avoid use
> > > of null pointer 'inq_result' in case of the failure
> > > of kmalloc.
> > >
> > > Signed-off-by: Zheng Wang <zyytlz.wz@....com>
> > > ---
> >
> > I fixed a typo in subject and tweaked the patch a bit
>
> Thanks for picking this patch up.
> https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git/commit/?h=linux-next&id=4a8fc6e3ac68ce4c355d1f4473ef1d8468b23bdc
>
> Stefan