tree 58f6a9106e9cfa68f4c6f5d23d94b962ac041393
parent bac09b093ebbb79e6a7444c7b979c32ca5540132
author Fiona Ebner <f.ebner@proxmox.com> 1711101009 +0100
committer Kevin Wolf <kwolf@redhat.com> 1711459286 +0100

iotests: add test for stream job with an unaligned prefetch read

Previously, bdrv_pad_request() could not deal with a NULL qiov when
a read needed to be aligned. During prefetch, a stream job will pass a
NULL qiov. Add a test case to cover this scenario.

By accident, also covers a previous race during shutdown, where block
graph changes during iteration in bdrv_flush_all() could lead to
unreferencing the wrong block driver state and an assertion failure
later.

Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
Message-ID: <20240322095009.346989-5-f.ebner@proxmox.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>