b52e50dd4f
commit 91751e248256efc111e52e15115840c35d85abaf upstream.
Recent reports have shown how we sometimes call vsock_*_has_data()
when a vsock socket has been de-assigned from a transport (see attached
links), but we shouldn't.
Previous commits should have solved the real problems, but we may have
more in the future, so to avoid null-ptr-deref, we can return 0
(no space, no data available) but with a warning.
This way the code should continue to run in a nearly consistent state
and have a warning that allows us to debug future problems.
Fixes:
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|---|---|---|
| .. | ||
| af_vsock_tap.c | ||
| af_vsock.c | ||
| diag.c | ||
| hyperv_transport.c | ||
| Kconfig | ||
| Makefile | ||
| virtio_transport_common.c | ||
| virtio_transport.c | ||
| vmci_transport_notify_qstate.c | ||
| vmci_transport_notify.c | ||
| vmci_transport_notify.h | ||
| vmci_transport.c | ||
| vmci_transport.h | ||
| vsock_addr.c | ||
| vsock_loopback.c | ||