On Tue, Oct 19, 2021 at 03:01:43PM +0800, Jason Wang wrote:
If an untrusted device neogitates BLK_F_MQ but advertises a zero
s/neogitates/negotiates
num_queues, the driver may end up trying to allocating zero size buffers where ZERO_SIZE_PTR is returned which may pass the checking against the NULL. This will lead unexpected results. Fixing this by failing the probe in this case. Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx> Cc: Stefan Hajnoczi <stefanha@xxxxxxxxxx> Cc: Stefano Garzarella <sgarzare@xxxxxxxxxx> Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx> --- drivers/block/virtio_blk.c | 4 ++++ 1 file changed, 4 insertions(+)
Should we CC stable? Reviewed-by: Stefano Garzarella <sgarzare@xxxxxxxxxx> _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
