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The function returns NULL if the ring buffer doesn't contain enough readable bytes to constitute a packet descriptor. The ring buffer's write_index is in memory which is shared with the Hyper-V host, an erroneous or malicious host could thus change its value and overturn the result of hvs_stream_has_data(). Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com> Reviewed-by: Michael Kelley <mikelley@microsoft.com> Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Link: https://lore.kernel.org/r/20220428145107.7878-2-parri.andrea@gmail.com Signed-off-by: Wei Liu <wei.liu@kernel.org> |
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.. | ||
af_vsock.c | ||
af_vsock_tap.c | ||
diag.c | ||
hyperv_transport.c | ||
Kconfig | ||
Makefile | ||
virtio_transport.c | ||
virtio_transport_common.c | ||
vmci_transport.c | ||
vmci_transport.h | ||
vmci_transport_notify.c | ||
vmci_transport_notify.h | ||
vmci_transport_notify_qstate.c | ||
vsock_addr.c | ||
vsock_loopback.c |