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(parent: 291f3a2) | patch
vfio: fix ioctl error handling
authorMichael S. Tsirkin <mst@redhat.com>
Sun, 28 Feb 2016 14:31:39 +0000 (16:31 +0200)
committerAlex Williamson <alex.williamson@redhat.com>
Sun, 28 Feb 2016 14:38:52 +0000 (07:38 -0700)
commitb0df1d0f36f61499ffec829a280ae648ca392870
tree624ca03b148b98379963ff4e1d4df85f75f7e087tree | snapshot
parent291f3a266c2fb4cc67da2041222dede88422e1f3commit | diff
vfio: fix ioctl error handling

Calling return copy_to_user(...) in an ioctl will not
do the right thing if there's a pagefault:
copy_to_user returns the number of bytes not copied
in this case.

Fix up vfio to do
return copy_to_user(...)) ?
-EFAULT : 0;

everywhere.

Cc: stable@vger.kernel.org
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
drivers/vfio/pci/vfio_pci.c diff | blob | history
drivers/vfio/platform/vfio_platform_common.c diff | blob | history
drivers/vfio/vfio_iommu_type1.c diff | blob | history
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