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5fbcbd50fc
It is not possible to instantiate a virtio-blk device with 0 virtqueues.
The following check is located in ->realize():
if (!conf->num_queues) {
error_setg(errp, "num-queues property must be larger than 0");
return;
}
Later on we access s->vq_aio_context[0] under the assumption that there
is as least one virtqueue. Hanna Czenczek <hreitz@redhat.com> noted that
it would help to show that the array index is already valid.
Add an assertion to document that s->vq_aio_context[0] is always
safe...and catch future code changes that break this assumption.
Suggested-by: Hanna Czenczek <hreitz@redhat.com>
Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Reviewed-by: Hanna Czenczek <hreitz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-ID: <20240206190610.107963-3-stefanha@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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|---|---|---|
| .. | ||
| dataplane | ||
| block.c | ||
| cdrom.c | ||
| ecc.c | ||
| fdc-internal.h | ||
| fdc-isa.c | ||
| fdc-sysbus.c | ||
| fdc.c | ||
| hd-geometry.c | ||
| Kconfig | ||
| m25p80.c | ||
| m25p80_sfdp.c | ||
| m25p80_sfdp.h | ||
| meson.build | ||
| nand.c | ||
| onenand.c | ||
| pflash_cfi01.c | ||
| pflash_cfi02.c | ||
| swim.c | ||
| tc58128.c | ||
| trace-events | ||
| trace.h | ||
| vhost-user-blk.c | ||
| virtio-blk-common.c | ||
| virtio-blk.c | ||
| xen-block.c | ||
| xen_blkif.h | ||