Batch timeout fix (#2109)

* fix

* FMT

* unused

fuzzers/fuzzbench/src/lib.rs

@@ -53,7 +53,7 @@ use libafl_targets::{
     libfuzzer_initialize, libfuzzer_test_one_input, std_edges_map_observer, CmpLogObserver,
 };
 #[cfg(unix)]
-use nix::{self, unistd::dup};
+use nix::unistd::dup;
 
 /// The fuzzer main (as `no_mangle` C function)
 #[no_mangle]

fuzzers/fuzzbench_fork_qemu/src/fuzzer.rs

@@ -55,7 +55,7 @@ use libafl_qemu::{
     QemuShutdownCause, Regs,
 };
 #[cfg(unix)]
-use nix::{self, unistd::dup};
+use nix::unistd::dup;
 
 /// The fuzzer main
 pub fn main() {

fuzzers/fuzzbench_qemu/src/fuzzer.rs

@@ -65,7 +65,7 @@ use libafl_qemu::{
     Regs,
 };
 #[cfg(unix)]
-use nix::{self, unistd::dup};
+use nix::unistd::dup;
 
 pub const MAX_INPUT_SIZE: usize = 1048576; // 1MB
 

fuzzers/fuzzbench_text/src/lib.rs

@@ -59,7 +59,7 @@ use libafl_targets::{
     libfuzzer_initialize, libfuzzer_test_one_input, std_edges_map_observer, CmpLogObserver,
 };
 #[cfg(unix)]
-use nix::{self, unistd::dup};
+use nix::unistd::dup;
 
 /// The fuzzer main (as `no_mangle` C function)
 #[no_mangle]

libafl/src/executors/hooks/timer.rs

@@ -325,6 +325,7 @@ impl TimerStruct {
         if self.batch_mode {
             unsafe {
                 let elapsed = current_time().saturating_sub(self.tmout_start_time);
+                let elapsed_since_signal = current_time().saturating_sub(self.tmout_start_time);
                 // elapsed may be > than tmout in case of received but ingored signal
                 if elapsed > self.exec_tmout
                     || self.exec_tmout.saturating_sub(elapsed) < self.avg_exec_time * self.avg_mul_k
@@ -337,8 +338,7 @@ impl TimerStruct {
                         self.executions = 0;
                     }
                     // readjust K
-                    if self.last_signal_time > self.exec_tmout * self.avg_mul_k
-                        && self.avg_mul_k > 1
+                    if elapsed_since_signal > self.exec_tmout * self.avg_mul_k && self.avg_mul_k > 1
                     {
                         self.avg_mul_k -= 1;
                     }