On 31.03.20 21:27, Eugenio Pérez wrote: > Vhost did not reset properly the batched descriptors on SET_VRING_BASE > event. Because of that, is possible to return an invalid descriptor to > the guest. > > This series ammend this, resetting them every time backend changes, and > creates a test to assert correct behavior. To do that, they need to > expose a new function in virtio_ring, virtqueue_reset_free_head, only > on test code. > > Another useful thing would be to check if mutex is properly get in > vq private_data accessors. Not sure if mutex debug code allow that, > similar to C++ unique lock::owns_lock. Not acquiring in the function > because caller code holds the mutex in order to perform more actions. > > v3: > * Rename accesors functions. > * Make scsi and test use the accesors too. > > v2: > * Squashed commits. > * Create vq private_data accesors (mst). > > This is meant to be applied on top of > c4f1c41a6094582903c75c0dcfacb453c959d457 in > git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git. A quick test on s390 looks good.
