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https://github.com/cloud-hypervisor/cloud-hypervisor.git
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49 lines
1.2 KiB
Rust
49 lines
1.2 KiB
Rust
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// Copyright © 2022 Intel Corporation
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//
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// SPDX-License-Identifier: Apache-2.0
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#![no_main]
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use devices::legacy::Cmos;
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use libc::EFD_NONBLOCK;
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use libfuzzer_sys::fuzz_target;
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use vm_device::BusDevice;
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use vmm_sys_util::eventfd::EventFd;
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fuzz_target!(|bytes| {
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// Need at least 16 bytes for the test
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if bytes.len() < 16 {
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return;
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}
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let mut below_4g = [0u8; 8];
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let mut above_4g = [0u8; 8];
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below_4g.copy_from_slice(&bytes[0..8]);
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above_4g.copy_from_slice(&bytes[8..16]);
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let mut cmos = Cmos::new(
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u64::from_le_bytes(below_4g),
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u64::from_le_bytes(above_4g),
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EventFd::new(EFD_NONBLOCK).unwrap(),
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);
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let mut i = 16;
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while i < bytes.len() {
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let read = bytes.get(i).unwrap_or(&0) % 2 == 0;
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i += 1;
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if read {
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let offset = (bytes.get(i).unwrap_or(&0) % 2) as u64;
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i += 1;
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let mut out_bytes = vec![0];
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cmos.read(0, offset, &mut out_bytes);
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} else {
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let offset = (bytes.get(i).unwrap_or(&0) % 2) as u64;
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i += 1;
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let data = vec![*bytes.get(i).unwrap_or(&0)];
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i += 1;
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cmos.write(0, offset, &data);
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}
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}
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});
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