Re: [PATCH v2 1/3] s390/vfio-ap: unpin pages on gisc registration failure

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 





On 10/26/23 09:25, Christian Borntraeger wrote:


Am 26.10.23 um 15:16 schrieb Tony Krowiak:


On 10/26/23 08:18, Christian Borntraeger wrote:


Am 18.10.23 um 15:38 schrieb Tony Krowiak:
From: Anthony Krowiak <akrowiak@xxxxxxxxxxxxx>

In the vfio_ap_irq_enable function, after the page containing the
notification indicator byte (NIB) is pinned, the function attempts
to register the guest ISC. If registration fails, the function sets the
status response code and returns without unpinning the page containing
the NIB. In order to avoid a memory leak, the NIB should be unpinned before
returning from the vfio_ap_irq_enable function.

Signed-off-by: Janosch Frank <frankja@xxxxxxxxxxxxx>

Where is Janoschs signed off coming from here?

Janosch found this and composed the patch originally. I just tweaked the description and posted it.

So we should add

Co-developed-by: Janosch Frank <frankja@xxxxxxxxxxxxx>

in front of Janoschs signoff.

Will do.




Signed-off-by: Anthony Krowiak <akrowiak@xxxxxxxxxxxxx>
Reviewed-by: Matthew Rosato <mjrosato@xxxxxxxxxxxxx>
Fixes: 783f0a3ccd79 ("s390/vfio-ap: add s390dbf logging to the vfio_ap_irq_enable function")
Cc: <stable@xxxxxxxxxxxxxxx>
---
  drivers/s390/crypto/vfio_ap_ops.c | 1 +
  1 file changed, 1 insertion(+)

diff --git a/drivers/s390/crypto/vfio_ap_ops.c b/drivers/s390/crypto/vfio_ap_ops.c
index 4db538a55192..9cb28978c186 100644
--- a/drivers/s390/crypto/vfio_ap_ops.c
+++ b/drivers/s390/crypto/vfio_ap_ops.c
@@ -457,6 +457,7 @@ static struct ap_queue_status vfio_ap_irq_enable(struct vfio_ap_queue *q,           VFIO_AP_DBF_WARN("%s: gisc registration failed: nisc=%d, isc=%d, apqn=%#04x\n",
                   __func__, nisc, isc, q->apqn);
+        vfio_unpin_pages(&q->matrix_mdev->vdev, nib, 1);
          status.response_code = AP_RESPONSE_INVALID_GISA;
          return status;
      }



[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Kernel Development]     [Kernel Newbies]     [IDE]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite Info]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux ATA RAID]     [Samba]     [Linux Media]     [Device Mapper]

  Powered by Linux