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Always show user monitor in SimpleMonitor (#3202)

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* *recursion* is not proper

* user monitor on

* api changer

* no submodule anymore
This commit is contained in:
Dongjia "toka" Zhang 2025-05-07 18:17:58 +02:00 committed by GitHub
parent f33376f1cd
commit d8f8640982
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GPG Key ID: B5690EEEBB952194
10 changed files with 37 additions and 60 deletions
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2
fuzzers/baby/baby_fuzzer_swap_differential/src/main.rs
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@ -203,7 +203,7 @@ pub fn main() {
// The Monitor trait define how the fuzzer stats are displayed to the user
#[cfg(not(feature = "tui"))]
let mon = SimpleMonitor::with_user_monitor(|s| println!("{s}"));
let mon = SimpleMonitor::new(|s| println!("{s}"));
#[cfg(feature = "tui")]
let mon = TuiMonitor::builder()
.title("Baby Fuzzer")

2
fuzzers/binary_only/fuzzbench_fork_qemu/src/fuzzer.rs
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@ -232,7 +232,7 @@ fn fuzz(
let file_null = File::open("/dev/null")?;
// 'While the stats are state, they are usually used in the broker - which is likely never restarted
let monitor = SimpleMonitor::with_user_monitor(|s| {
let monitor = SimpleMonitor::new(|s| {
#[cfg(unix)]
writeln!(&mut stdout_cpy, "{s}").unwrap();
#[cfg(windows)]

2
fuzzers/binary_only/qemu_cmin/src/fuzzer.rs
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@ -180,7 +180,7 @@ pub fn fuzz() -> Result<(), Error> {
let stack_ptr: GuestAddr = qemu.read_reg(Regs::Sp).unwrap();
let monitor = SimpleMonitor::with_user_monitor(|s| {
let monitor = SimpleMonitor::new(|s| {
println!("{s}");
});
let (state, mut mgr) = match SimpleRestartingEventManager::launch(monitor, &mut shmem_provider)

2
fuzzers/binary_only/qemu_tmin/src/tmin_single_core.rs
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@ -223,7 +223,7 @@ pub fn fuzz() -> Result<(), Error> {
};
// Set up the most basic monitor possible.
let monitor = SimpleMonitor::with_user_monitor(|s| {
let monitor = SimpleMonitor::new(|s| {
println!("{s}");
});
let (state, mut mgr) = match SimpleRestartingEventManager::launch(monitor, &mut shmem_provider)

2
fuzzers/forkserver/forkserver_libafl_cc/src/main.rs
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@ -149,7 +149,7 @@ pub fn main() {
.unwrap();
// The Monitor trait define how the fuzzer stats are reported to the user
let monitor = SimpleMonitor::with_user_monitor(|s| {
let monitor = SimpleMonitor::new(|s| {
println!("{s}");
});

16
libafl/src/monitors/mod.rs
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@ -153,7 +153,6 @@ where
F: FnMut(&str),
{
print_fn: F,
print_user_monitor: bool,
}
impl<F> Debug for SimpleMonitor<F>
@ -188,13 +187,11 @@ where
global_stats.execs_per_sec_pretty
);
if self.print_user_monitor {
client_stats_manager.client_stats_insert(sender_id)?;
let client = client_stats_manager.client_stats_for(sender_id)?;
for (key, val) in client.user_stats() {
write!(fmt, ", {key}: {val}").unwrap();
}
}
(self.print_fn)(&fmt);
@ -222,10 +219,7 @@ where
{
/// Creates the monitor, using the `current_time` as `start_time`.
pub fn new(print_fn: F) -> Self {
Self {
print_fn,
print_user_monitor: false,
}
Self { print_fn }
}
/// Creates the monitor with a given `start_time`.
@ -236,14 +230,6 @@ where
pub fn with_time(print_fn: F, _start_time: Duration) -> Self {
Self::new(print_fn)
}
/// Creates the monitor that also prints the user monitor
pub fn with_user_monitor(print_fn: F) -> Self {
Self {
print_fn,
print_user_monitor: true,
}
}
}
/// Start the timer

22
libafl_targets/src/forkserver.rs
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@ -1,12 +1,11 @@
//! Forkserver logic into targets
use core::sync::atomic::{AtomicBool, Ordering};
use std::{
os::fd::{AsFd, AsRawFd, BorrowedFd},
sync::OnceLock,
};
use core::sync::atomic::{AtomicBool, Ordering};
use libafl::{
Error,
executors::forkserver::{
@ -15,7 +14,6 @@ use libafl::{
},
};
use libafl_bolts::os::{ChildHandle, ForkResult};
use nix::{
sys::signal::{SigHandler, Signal},
unistd::Pid,
@ -293,10 +291,7 @@ impl ForkserverParent for MaybePersistentForkserverParent {
// a child, wait it, and get a stopped signal. Moreover, was_killed is
// true only if the forkserver killed such child. In all cases, the
// last_child_pid will never be None.
if nix::sys::wait::waitpid(
Pid::from_raw(self.last_child_pid.take().unwrap()),
None,
)
if nix::sys::wait::waitpid(Pid::from_raw(self.last_child_pid.take().unwrap()), None)
.is_err()
{
return Err(Error::illegal_state("child_stopped && was_killed"));
@ -323,12 +318,18 @@ impl ForkserverParent for MaybePersistentForkserverParent {
}
ForkResult::Child => unsafe {
// unwrap here: the field is assigned in `pre_fuzzing`
nix::sys::signal::signal(Signal::SIGCHLD, self.old_sigchld_handler.take().unwrap())
nix::sys::signal::signal(
Signal::SIGCHLD,
self.old_sigchld_handler.take().unwrap(),
)
.inspect_err(|_| {
log::error!("Fail to restore signal handler for SIGCHLD.");
})?;
// unwrap here: the field is assigned in `pre_fuzzing`
nix::sys::signal::signal(Signal::SIGTERM, self.old_sigterm_handler.take().unwrap())
nix::sys::signal::signal(
Signal::SIGTERM,
self.old_sigterm_handler.take().unwrap(),
)
.inspect_err(|_| {
log::error!("Fail to restore signal handler for SIGTERM.");
})?;
@ -341,7 +342,8 @@ impl ForkserverParent for MaybePersistentForkserverParent {
fn handle_child_requests(&mut self) -> Result<i32, Error> {
let mut status = 0i32;
// unwrap here: the field is assigned if we are parent process in `spawn_child`
if unsafe { libc::waitpid(*self.last_child_pid.as_ref().unwrap(), &raw mut status, 0) < 0 } {
if unsafe { libc::waitpid(*self.last_child_pid.as_ref().unwrap(), &raw mut status, 0) < 0 }
{
return Err(Error::illegal_state("waitpid"));
}
if libc::WIFSTOPPED(status) {

11
scripts/test_fuzzer.sh
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@ -5,22 +5,11 @@ cd "$SCRIPT_DIR/.." || exit 1
# TODO: This should be rewritten in rust, a Makefile, or some platform-independent language
if [[ -z "${RUN_ON_CI}" ]]; then
fuzzers=$(find ./fuzzers -mindepth 1 -maxdepth 1 -type d)
backtrace_fuzzers=$(find ./fuzzers/backtrace_baby_fuzzers -mindepth 1 -maxdepth 1 -type d)
fuzzer_to_test="$fuzzers $backtrace_fuzzers"
else
fuzzer_to_test="$1"
export PROFILE=dev
export PROFILE_DIR=debug
fi
echo "Testing" "$fuzzer_to_test"
# build with a shared target dir for all fuzzers. this should speed up
# compilation a bit, and allows for easier artifact management (caching and
# cargo clean).
git submodule init && git submodule update
# override default profile settings for speed
# export RUSTFLAGS="-C prefer-dynamic"