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vfio fixes for v3.8-rc5

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Merge tag 'vfio-for-v3.8-rc5' of git://github.com/awilliam/linux-vfio

Pull vfio fix from Alex Williamson.
 "vfio-pci: Fix buffer overfill"

* tag 'vfio-for-v3.8-rc5' of git://github.com/awilliam/linux-vfio:
  vfio-pci: Fix buffer overfill
This commit is contained in:
Linus Torvalds 2013-01-22 10:31:57 -08:00
commit 3c2a9f84e9
1 changed files with 2 additions and 2 deletions
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4
drivers/vfio/pci/vfio_pci_rdwr.c
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@ -240,17 +240,17 @@ ssize_t vfio_pci_mem_readwrite(struct vfio_pci_device *vdev, char __user *buf,
filled = 1;
} else {
/* Drop writes, fill reads with FF */
filled = min((size_t)(x_end - pos), count);
if (!iswrite) {
char val = 0xFF;
size_t i;
for (i = 0; i < x_end - pos; i++) {
for (i = 0; i < filled; i++) {
if (put_user(val, buf + i))
goto out;
}
}
filled = x_end - pos;
}
count -= filled;