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s390/cio: return -EFAULT if copy_to_user() fails
commitd9c48a948d
upstream. Fixes:120e214e50
("vfio: ccw: realize VFIO_DEVICE_G(S)ET_IRQ_INFO ioctls") Signed-off-by: Eric Farman <farman@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1 changed files with 1 additions and 1 deletions
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@ -578,7 +578,7 @@ static ssize_t vfio_ccw_mdev_ioctl(struct mdev_device *mdev,
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if (info.count == -1)
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return -EINVAL;
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return copy_to_user((void __user *)arg, &info, minsz);
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return copy_to_user((void __user *)arg, &info, minsz) ? -EFAULT : 0;
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}
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case VFIO_DEVICE_SET_IRQS:
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{
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