All of lore.kernel.org
 help / color / mirror / Atom feed
From: Dan Carpenter <dan.carpenter@oracle.com>
To: Alex Williamson <alex.williamson@redhat.com>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
	kernel-janitors@vger.kernel.org, walter harms <wharms@bfs.de>
Subject: [patch 1/3 v2] vfio: signedness bug in vfio_config_do_rw()
Date: Thu, 28 Jun 2012 11:07:25 +0300	[thread overview]
Message-ID: <20120628080725.GA22595@elgon.mountain> (raw)
In-Reply-To: <4FEC0480.7010508@bfs.de>

The "count" variable needs to be signed here because we use it to store
negative error codes.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
v2: Just declare count as signed.

diff --git a/drivers/vfio/pci/vfio_pci_config.c b/drivers/vfio/pci/vfio_pci_config.c
index a4f7321..2e00aa8 100644
--- a/drivers/vfio/pci/vfio_pci_config.c
+++ b/drivers/vfio/pci/vfio_pci_config.c
@@ -1419,7 +1419,7 @@ void vfio_config_free(struct vfio_pci_device *vdev)
 }
 
 static ssize_t vfio_config_do_rw(struct vfio_pci_device *vdev, char __user *buf,
-				 size_t count, loff_t *ppos, bool iswrite)
+				 ssize_t count, loff_t *ppos, bool iswrite)
 {
 	struct pci_dev *pdev = vdev->pdev;
 	struct perm_bits *perm;

WARNING: multiple messages have this Message-ID (diff)
From: Dan Carpenter <dan.carpenter@oracle.com>
To: Alex Williamson <alex.williamson@redhat.com>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
	kernel-janitors@vger.kernel.org, walter harms <wharms@bfs.de>
Subject: [patch 1/3 v2] vfio: signedness bug in vfio_config_do_rw()
Date: Thu, 28 Jun 2012 08:07:25 +0000	[thread overview]
Message-ID: <20120628080725.GA22595@elgon.mountain> (raw)
In-Reply-To: <4FEC0480.7010508@bfs.de>

The "count" variable needs to be signed here because we use it to store
negative error codes.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
v2: Just declare count as signed.

diff --git a/drivers/vfio/pci/vfio_pci_config.c b/drivers/vfio/pci/vfio_pci_config.c
index a4f7321..2e00aa8 100644
--- a/drivers/vfio/pci/vfio_pci_config.c
+++ b/drivers/vfio/pci/vfio_pci_config.c
@@ -1419,7 +1419,7 @@ void vfio_config_free(struct vfio_pci_device *vdev)
 }
 
 static ssize_t vfio_config_do_rw(struct vfio_pci_device *vdev, char __user *buf,
-				 size_t count, loff_t *ppos, bool iswrite)
+				 ssize_t count, loff_t *ppos, bool iswrite)
 {
 	struct pci_dev *pdev = vdev->pdev;
 	struct perm_bits *perm;

  reply	other threads:[~2012-06-28  8:07 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-06-26  4:55 Request VFIO inclusion in linux-next Alex Williamson
2012-06-26  4:55 ` Alex Williamson
2012-06-26 21:17 ` Benjamin Herrenschmidt
2012-06-26 21:17   ` Benjamin Herrenschmidt
2012-06-26 23:50 ` Stephen Rothwell
2012-06-27 12:37 ` Dan Carpenter
2012-06-27 12:37   ` Dan Carpenter
2012-06-27 19:23   ` Alex Williamson
2012-06-27 19:23     ` Alex Williamson
2012-06-28  6:44     ` Dan Carpenter
2012-06-28  6:44       ` Dan Carpenter
2012-07-02  3:41   ` Alexey Kardashevskiy
2012-07-02  3:41     ` [Qemu-devel] " Alexey Kardashevskiy
2012-07-02  4:14     ` Alex Williamson
2012-07-02  4:14       ` [Qemu-devel] " Alex Williamson
2012-07-02  4:14       ` Alex Williamson
2012-06-28  6:44 ` [patch 1/3] vfio: signedness bug in vfio_config_do_rw() Dan Carpenter
2012-06-28  6:44   ` Dan Carpenter
2012-06-28  7:15   ` walter harms
2012-06-28  8:07     ` Dan Carpenter [this message]
2012-06-28  8:07       ` [patch 1/3 v2] " Dan Carpenter
2012-06-28 22:24       ` Alex Williamson
2012-06-28 22:24         ` Alex Williamson
2012-06-28  8:05   ` [patch 1/3] " Dan Carpenter
2012-06-28  6:44 ` [patch 2/3] vfio: make count unsigned to prevent integer underflow Dan Carpenter
2012-06-28  6:44   ` Dan Carpenter
2012-06-28 22:24   ` Alex Williamson
2012-06-28 22:24     ` Alex Williamson
2012-06-28  6:45 ` [patch 3/3] vfio: return -EFAULT on failure Dan Carpenter
2012-06-28  6:45   ` Dan Carpenter
2012-06-28 22:25   ` Alex Williamson
2012-06-28 22:25     ` Alex Williamson

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20120628080725.GA22595@elgon.mountain \
    --to=dan.carpenter@oracle.com \
    --cc=alex.williamson@redhat.com \
    --cc=kernel-janitors@vger.kernel.org \
    --cc=kvm@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=wharms@bfs.de \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.