diff mbox series

[5.4,051/168] s390/cio: return -EFAULT if copy_to_user() fails

Message ID 20210315135552.035113627@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg KH March 15, 2021, 1:54 p.m. UTC 
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

From: Eric Farman <farman@linux.ibm.com>

commit d9c48a948d29bcb22f4fe61a81b718ef6de561a0 upstream.

Fixes: 120e214e504f ("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>
---
 drivers/s390/cio/vfio_ccw_ops.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

--- a/drivers/s390/cio/vfio_ccw_ops.c
+++ b/drivers/s390/cio/vfio_ccw_ops.c
@@ -545,7 +545,7 @@  static ssize_t vfio_ccw_mdev_ioctl(struc
 		if (info.count == -1)
 			return -EINVAL;
 
-		return copy_to_user((void __user *)arg, &info, minsz);
+		return copy_to_user((void __user *)arg, &info, minsz) ? -EFAULT : 0;
 	}
 	case VFIO_DEVICE_SET_IRQS:
 	{