diff options
| author | Jason Wang | 2022-06-08 14:14:22 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin | 2022-06-08 08:56:03 -0400 |
| commit | 228432551bd8783211e494ab35f42a4344580502 (patch) | |
| tree | f403756902a5549b9838d4e7b0e57c428b630ab0 /kernel/compat.c | |
| parent | f2906aa863381afb0015a9eb7fefad885d4e5a56 (diff) | |
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>
Diffstat (limited to 'kernel/compat.c')
0 files changed, 0 insertions, 0 deletions