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| author | Stefan Agner <stefan.agner@toradex.com> | 2017-09-26 16:04:08 +0200 |
|---|---|---|
| committer | Stefan Agner <stefan.agner@toradex.com> | 2017-09-26 18:11:18 +0200 |
| commit | 1f4d46cea2bc1886a13ae9adfcd9e4243eed6a4c (patch) | |
| tree | 2001999c70f8e46b192fc552590810aab35710e3 /drivers/vfio/pci/vfio_pci_rdwr.c | |
| parent | d152ae9d4704d8c7b3775e3b1a20e62aa3b1eed8 (diff) | |
| parent | b52c9082f2eb3a6f7fbbc86fad3eaa2a1725da66 (diff) | |
Merge tag 'v4.4.88' into toradex_vf_4.4-next
This is the 4.4.88 stable release
Diffstat (limited to 'drivers/vfio/pci/vfio_pci_rdwr.c')
| -rw-r--r-- | drivers/vfio/pci/vfio_pci_rdwr.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/vfio/pci/vfio_pci_rdwr.c b/drivers/vfio/pci/vfio_pci_rdwr.c index 210db24d2204..4d39f7959adf 100644 --- a/drivers/vfio/pci/vfio_pci_rdwr.c +++ b/drivers/vfio/pci/vfio_pci_rdwr.c @@ -190,7 +190,10 @@ ssize_t vfio_pci_vga_rw(struct vfio_pci_device *vdev, char __user *buf, if (!vdev->has_vga) return -EINVAL; - switch (pos) { + if (pos > 0xbfffful) + return -EINVAL; + + switch ((u32)pos) { case 0xa0000 ... 0xbffff: count = min(count, (size_t)(0xc0000 - pos)); iomem = ioremap_nocache(0xa0000, 0xbffff - 0xa0000 + 1); |