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Simplify the notes fuzz target to just fuzz note parsing

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The other ElfBytes logic is fuzzed elsewhere - this simplifies the fuzz
target space to get more coverage of the notes parsing specifics.
This commit is contained in:
Christopher Cole 2022-11-13 17:24:26 -08:00
parent a8c1125fa5
commit ea3605ed29
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GPG Key ID: 0AC856975983E9DB
1 changed files with 10 additions and 11 deletions
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21
fuzz/fuzz_targets/notes.rs
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@ -1,18 +1,17 @@
#![no_main] #![no_main]
use elf::endian::AnyEndian; use elf::endian::NativeEndian;
use elf::note::Note; use elf::file::Class;
use elf::ElfBytes; use elf::note::{Note, NoteIterator};
use libfuzzer_sys::fuzz_target; use libfuzzer_sys::fuzz_target;
fuzz_target!(|data: &[u8]| { fuzz_target!(|data: &[u8]| {
if let Ok(file) = ElfBytes::<AnyEndian>::minimal_parse(data) { if data.is_empty() {
if let Some(shdrs) = file.section_headers() { return;
if let Some(shdr) = shdrs.iter().find(|shdr| shdr.sh_type == elf::abi::SHT_NOTE) {
if let Ok(notes) = file.section_data_as_notes(&shdr) {
let _: Vec<Note> = notes.collect();
}
}
}
} }
let (head, tail) = data.split_at(1);
let iter = NoteIterator::new(NativeEndian, Class::ELF64, head[0] as usize, tail);
let _: Vec<Note> = iter.collect();
}); });