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remoteproc_virtio: guard null notify and check return status

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rpvdev->notify is called from four places in this file: virtqueue
notify, set_status, set_features, and write_config. None guarded
against notify being NULL, valid when no mailbox is configured, and
none checked the returned status. Add a shared rpvdev_notify()
helper used at all four sites: skip when notify is NULL, log a
warning via metal_log on nonzero return. Exported notify signature
is unchanged, per discussion in issue #343.

Assisted-by: Claude <noreply@anthropic.com>
Signed-off-by: Atul Akella <atul.akella@gmail.com>
This commit is contained in:
Atul Akella
2026-09-28 10:33:45 +02:00
committed by Arnaud Pouliquen
parent 22ddff1a4e
commit a0ec4fc2c7
1 changed files with 18 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lib/remoteproc/remoteproc_virtio.c
+18 -4
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@@ -32,6 +32,20 @@ static void rproc_virtio_delete_virtqueues(struct virtio_device *vdev)
}
}
static void rpvdev_notify(struct remoteproc_virtio *rpvdev, uint32_t id)
{
int ret;
if (!rpvdev->notify)
return;
ret = rpvdev->notify(rpvdev->priv, id);
if (ret != 0)
metal_log(METAL_LOG_ERROR,
"notify failed: id=%lu, ret=%d\r\n",
(unsigned long)id, ret);
}
static int rproc_virtio_create_virtqueue(struct virtio_device *vdev,
unsigned int flags,
unsigned int idx,
@@ -110,7 +124,7 @@ static void rproc_virtio_virtqueue_notify(struct virtqueue *vq)
rpvdev = metal_container_of(vdev, struct remoteproc_virtio, vdev);
metal_assert(vq_id < vdev->vrings_num);
vring_info = &vdev->vrings_info[vq_id];
rpvdev->notify(rpvdev->priv, vring_info->notifyid);
rpvdev_notify(rpvdev, vring_info->notifyid);
}
static unsigned char rproc_virtio_get_status(struct virtio_device *vdev)
@@ -144,7 +158,7 @@ static void rproc_virtio_set_status(struct virtio_device *vdev,
metal_io_virt_to_offset(io, &vdev_rsc->status),
status);
RSC_TABLE_FLUSH(vdev_rsc, sizeof(struct fw_rsc_vdev));
rpvdev->notify(rpvdev->priv, vdev->notifyid);
rpvdev_notify(rpvdev, vdev->notifyid);
}
#endif
@@ -199,7 +213,7 @@ static void rproc_virtio_set_features(struct virtio_device *vdev,
metal_io_virt_to_offset(io, &vdev_rsc->gfeatures),
features);
RSC_TABLE_FLUSH(vdev_rsc, sizeof(struct fw_rsc_vdev));
rpvdev->notify(rpvdev->priv, vdev->notifyid);
rpvdev_notify(rpvdev, vdev->notifyid);
}
static uint32_t rproc_virtio_negotiate_features(struct virtio_device *vdev,
@@ -253,7 +267,7 @@ static void rproc_virtio_write_config(struct virtio_device *vdev,
metal_io_virt_to_offset(io, config + offset),
src, length);
RSC_TABLE_FLUSH(config + offset, length);
rpvdev->notify(rpvdev->priv, vdev->notifyid);
rpvdev_notify(rpvdev, vdev->notifyid);
}
}