This is a note to let you know that I've just added the patch titled
s390/cio: return -EFAULT if copy_to_user() fails
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
s390-cio-return-efault-if-copy_to_user-fails-take-2.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From d9c48a948d29bcb22f4fe61a81b718ef6de561a0 Mon Sep 17 00:00:00 2001
From: Eric Farman <farman@xxxxxxxxxxxxx>
Date: Mon, 1 Mar 2021 19:33:24 +0100
Subject: s390/cio: return -EFAULT if copy_to_user() fails
From: Eric Farman <farman@xxxxxxxxxxxxx>
commit d9c48a948d29bcb22f4fe61a81b718ef6de561a0 upstream.
Fixes: 120e214e504f ("vfio: ccw: realize VFIO_DEVICE_G(S)ET_IRQ_INFO ioctls")
Signed-off-by: Eric Farman <farman@xxxxxxxxxxxxx>
Signed-off-by: Heiko Carstens <hca@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/s390/cio/vfio_ccw_ops.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/s390/cio/vfio_ccw_ops.c
+++ b/drivers/s390/cio/vfio_ccw_ops.c
@@ -578,7 +578,7 @@ 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:
{
Patches currently in stable-queue which might be from farman@xxxxxxxxxxxxx are
queue-5.10/s390-cio-return-efault-if-copy_to_user-fails-take-2.patch
