From: Dan Carpenter <dan.carpenter@oracle.com>
To: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Longfang Liu <liulongfang@huawei.com>,
Yishai Hadas <yishaih@nvidia.com>,
Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>,
Kevin Tian <kevin.tian@intel.com>,
Alex Williamson <alex.williamson@redhat.com>,
Cornelia Huck <cohuck@redhat.com>,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
kernel-janitors@vger.kernel.org
Subject: Re: [PATCH] vfio: hisi_acc_vfio_pci: fix integer overflow check in hisi_acc_vf_resume_write()
Date: Thu, 7 Jul 2022 17:58:24 +0300 [thread overview]
Message-ID: <20220707145824.GH2316@kadam> (raw)
In-Reply-To: <20220706161812.GJ23621@ziepe.ca>
On Wed, Jul 06, 2022 at 01:18:12PM -0300, Jason Gunthorpe wrote:
> On Wed, Jul 06, 2022 at 08:51:24AM +0300, Dan Carpenter wrote:
>
> > > This code was copy and pasted from drivers/vfio/pci/mlx5/main.c, so it
> > > should be fixed too
> >
> > Sure.
> >
> > I created a static checker warning for this type of thing but it didn't
> > catch the issue in drivers/vfio/pci/mlx5/main.c because Smatch says that
> > the bug is impossible. Which is true.
>
> How come it is different?
No, it doesn't find either one. I don't think it's a real bug because
of the rw_verify_area() thing. But I wrote the check based on noticing
it during review just to see if there were similar issues and didn't
find anything.
regards,
dan carpenter
prev parent reply other threads:[~2022-07-07 15:00 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-05 9:05 [PATCH] vfio: hisi_acc_vfio_pci: fix integer overflow check in hisi_acc_vf_resume_write() Dan Carpenter
2022-07-05 18:06 ` Jason Gunthorpe
2022-07-06 5:51 ` Dan Carpenter
2022-07-06 16:18 ` Jason Gunthorpe
2022-07-07 14:58 ` Dan Carpenter [this message]
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