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[v3,0/2] vhost-vdpa mapping error path fixes

Message ID 1601701330-16837-1-git-send-email-si-wei.liu@oracle.com
Headers show
Series vhost-vdpa mapping error path fixes | expand

Message

Si-Wei Liu Oct. 3, 2020, 5:02 a.m. UTC 
Commit 4c8cf31885f6 ("vhost: introduce vDPA-based backend")
has following issues in the failure path of IOTLB update:

1) vhost_vdpa_map() does not clean up dangling iotlb entry
   upon mapping failure

2) vhost_vdpa_process_iotlb_update() has leakage of pinned
   pages in case of vhost_vdpa_map() failure

This patchset attempts to address the above issues.

Changes in v3:
- Factor out changes in vhost_vdpa_map() and the fix for
  page pinning leak to separate patches (Jason)

---
Si-Wei Liu (2):
  vhost-vdpa: fix vhost_vdpa_map() on error condition
  vhost-vdpa: fix page pinning leakage in error path

 drivers/vhost/vdpa.c | 122 +++++++++++++++++++++++++++++++--------------------
 1 file changed, 74 insertions(+), 48 deletions(-)