diff mbox series

[PATCH-for-9.0,4/4] hw/virtio/virtio-crypto: Protect from DMA re-entrancy bugs

Message ID 20240404191339.5688-5-philmd@linaro.org
State New
Headers show
Series hw/virtio: Protect from more DMA re-entrancy bugs | expand

Commit Message

Philippe Mathieu-Daudé April 4, 2024, 7:13 p.m. UTC 
Replace qemu_bh_new_guarded() by virtio_bh_new_guarded()
so the bus and device use the same guard. Otherwise the
DMA-reentrancy protection can be bypassed.

Cc: qemu-stable@nongnu.org
Suggested-by: Alexander Bulekov <alxndr@bu.edu>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 hw/virtio/virtio-crypto.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/hw/virtio/virtio-crypto.c b/hw/virtio/virtio-crypto.c
index fe1313f2ad..ac1b67d1fb 100644
--- a/hw/virtio/virtio-crypto.c
+++ b/hw/virtio/virtio-crypto.c
@@ -1080,8 +1080,8 @@  static void virtio_crypto_device_realize(DeviceState *dev, Error **errp)
         vcrypto->vqs[i].dataq =
                  virtio_add_queue(vdev, 1024, virtio_crypto_handle_dataq_bh);
         vcrypto->vqs[i].dataq_bh =
-                 qemu_bh_new_guarded(virtio_crypto_dataq_bh, &vcrypto->vqs[i],
-                                     &dev->mem_reentrancy_guard);
+                 virtio_bh_new_guarded(vdev, virtio_crypto_dataq_bh,
+                                       &vcrypto->vqs[i]);
         vcrypto->vqs[i].vcrypto = vcrypto;
     }