Jason Wang
228432551b
virtio-rng: make device ready before making request
Current virtio-rng does a entropy request before DRIVER_OK, this violates the spec: virtio spec requires that all drivers set DRIVER_OK before using devices. Further, kernel will ignore the interrupt after commit 8b4ec69d7e09 ("virtio: harden vring IRQ"). Fixing this by making device ready before the request. Cc: stable@vger.kernel.org Fixes: 8b4ec69d7e09 ("virtio: harden vring IRQ") Fixes: f7f510ec1957 ("virtio: An entropy device, as suggested by hpa.") Reported-and-tested-by: syzbot+5b59d6d459306a556f54@syzkaller.appspotmail.com Signed-off-by: Jason Wang <jasowang@redhat.com> Message-Id: <20220608061422.38437-1-jasowang@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Linux kernel ============ There are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. Please read Documentation/admin-guide/README.rst first. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. The formatted documentation can also be read online at: https://www.kernel.org/doc/html/latest/ There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.
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