Change fuzzbench_qemu fuzzer (#2520)

* change fuzzbench_qemu

* real test

* fix qemu crash hook

* update bindings

* fix fork executor, reduce trait bound overhead

* make EdgeModule depend on observer to get ptrs.

* do not make EdgeCoverageModule::new public

* map observer as builder call

* adapt examples with new edge coverage module builder.

* TMP: everyone is a variable length map observer

* reuse profile path script

* fix absolute paths

* remove some dependencies to make pipeline faster

* compile-time builder initialization check

---------

Co-authored-by: Romain Malmain <romain.malmain@pm.me>

.github/workflows/build_and_test.yml

@@ -66,28 +66,6 @@ jobs:
       - name: Test libafl_targets no_std
         run: cd libafl_targets && cargo test --no-default-features
 
-  llvm-tester:
-    runs-on: ubuntu-24.04
-    continue-on-error: true
-    strategy:
-      matrix:
-        llvm-version: [ "16", "17" ] # Add 18 when KyleMayes/install-llvm-action enables it
-    steps:
-      - name: Remove Dotnet & Haskell
-        run: rm -rf /usr/share/dotnet && rm -rf /opt/ghc
-      - name: Install curl
-        run: sudo apt-get install clang
-      - uses: dtolnay/rust-toolchain@stable
-      - name: Install LLVM and Clang
-        uses: KyleMayes/install-llvm-action@v2
-        with:
-          version: "${{matrix.llvm-version}}"
-      - uses: actions/checkout@v4
-      - uses: Swatinem/rust-cache@v2
-        with: { shared-key: "llvm-tester" }
-      - name: Build and test with llvm-${{ matrix.llvm-version }}
-        run: pwd && ls & cd libafl_cc && cargo build --release
-
   ubuntu-doc-build:
     runs-on: ubuntu-24.04
     steps:
@@ -246,9 +224,7 @@ jobs:
 
   fuzzers:
     needs:
-      - ubuntu
       - fuzzers-preflight
-      - common
     strategy:
       fail-fast: true
       matrix:
@@ -355,7 +331,6 @@ jobs:
 
   fuzzers-qemu:
     needs:
-      - common
       - changes
     if: ${{ needs.changes.outputs.qemu == 'true' }}
     strategy:

docs/src/DEBUGGING.md

@@ -20,7 +20,7 @@ Try running the fuzzer with the `introspection` feature of the `libafl`. This wi
 ```
 let map = StdMapObserver::from_mut_ptr("edges", EDGES_MAP.as_mut_ptr(), EDGES_MAP.len());
 ```
-You should *never* use the `EDGES_MAP`'s size as this is just the size of the allocated size of the coverage map. Consider using something smaller or our default value `libafl_targets::LIBAFL_EDGES_MAP_SIZE_IN_USE`.
+You should *never* use the `EDGES_MAP`'s size as this is just the size of the allocated size of the coverage map. Consider using something smaller or our default value `libafl_targets::LIBAFL_EDGES_MAP_DEFAULT_SIZE`.
 
 ## Q. I still have problems with my fuzzer.
 Finally, if you really have no idea what is going on, run your fuzzer with logging enabled. (You can use `env_logger`, `SimpleStdoutLogger`, `SimpleStderrLogger` from `libafl_bolts`. `fuzzbench_text` has an example to show how to use it.) (Don't forget to enable stdout and stderr), and you can open an issue or ask us in Discord.

docs/src/core_concepts/executor.md

@@ -57,7 +57,7 @@ On your fuzzer side, you can allocate a shared memory region and make the `EDGES
 ```rust,ignore
 let mut shmem;
 unsafe{
-    shmem = StdShMemProvider::new().unwrap().new_shmem(EDGES_MAP_SIZE_IN_USE).unwrap();
+    shmem = StdShMemProvider::new().unwrap().new_shmem(EDGES_MAP_DEFAULT_SIZE).unwrap();
 }
 let shmem_buf = shmem.as_slice_mut();
 unsafe{

docs/src/design/migration-0.9.md

@@ -169,7 +169,7 @@ from libafl_target's `EDGES_MAP`.
 In the future, instead of using:
 
 ```rust,ignore
-let edges = unsafe { &mut EDGES_MAP[0..EDGES_MAP_SIZE_IN_USE] };
+let edges = unsafe { &mut EDGES_MAP[0..EDGES_MAP_DEFAULT_SIZE] };
 let edges_observer = StdMapObserver::new("edges", edges);
 ```
 

fuzzers/binary_only/fuzzbench_fork_qemu/Cargo.toml

@@ -29,6 +29,7 @@ libafl_qemu = { path = "../../../libafl_qemu", features = [
   "x86_64",
   "usermode",
 ] }
+libafl_targets = { path = "../../../libafl_targets" }
 
 log = { version = "0.4.22", features = ["release_max_level_info"] }
 clap = { version = "4.5.18", features = ["default"] }

fuzzers/binary_only/fuzzbench_fork_qemu/Makefile.toml

@@ -1,11 +1,28 @@
+env_scripts = ['''
+#!@duckscript
+profile = get_env PROFILE
+
+if eq ${profile} "dev"
+    set_env PROFILE_DIR debug
+else
+    set_env PROFILE_DIR ${profile}
+end
+''', '''
+#!@duckscript
+runs_on_ci = get_env RUN_ON_CI
+
+if ${runs_on_ci}
+    cargo_target_dir = get_env CARGO_MAKE_CRATE_TARGET_DIRECTORY
+    set_env TARGET_DIR ${cargo_target_dir}
+end
+''']
+
 # Variables
 [env]
-FUZZER_NAME = 'libpng_harness'
+FUZZER_NAME = 'harness'
 PROJECT_DIR = { script = ["pwd"] }
 PROFILE = { value = "release", condition = { env_not_set = ["PROFILE"] } }
-PROFILE_DIR = { value = "release", condition = { env_not_set = [
+TARGET_DIR = "${CARGO_MAKE_CRATE_TARGET_DIRECTORY}"
-  "PROFILE_DIR",
-] } }
 
 [tasks.unsupported]
 script_runner = "@shell"
@@ -13,20 +30,6 @@ script = '''
 echo "Qemu fuzzer not supported on windows"
 '''
 
-# libpng
-[tasks.libpng]
-linux_alias = "libpng_unix"
-mac_alias = "libpng_unix"
-windows_alias = "unsupported"
-
-[tasks.libpng_unix]
-condition = { files_not_exist = ["./libpng-1.6.37"] }
-script_runner = "@shell"
-script = '''
-wget https://github.com/glennrp/libpng/archive/refs/tags/v1.6.37.tar.gz
-tar -xvf v1.6.37.tar.gz
-'''
-
 # fuzzer
 [tasks.fuzzer]
 linux_alias = "fuzzer_unix"
@@ -46,20 +49,13 @@ windows_alias = "unsupported"
 [tasks.harness_unix]
 script_runner = "@shell"
 script = '''
-cd libpng-1.6.37 && ./configure --enable-shared=no --with-pic=yes --enable-hardware-optimizations=yes
-cd "${PROJECT_DIR}"
-make -C libpng-1.6.37
 cc -c "${PROJECT_DIR}/libfuzzer_main.c"
-# Build the libpng harness    
+cc \
-c++ \
+    ./fuzz.c \
-    ../../inprocess/libfuzzer_libpng/harness.cc \
-    ./libpng-1.6.37/.libs/libpng16.a \
     ./libfuzzer_main.o \
-    -I./libpng-1.6.37/ \
     -o ${FUZZER_NAME} \
     -lm -lz
 '''
-dependencies = ["libpng"]
 
 # Run the fuzzer
 [tasks.run]
@@ -72,16 +68,16 @@ command = "cargo"
 args = [
   "run",
   "--profile",
-  "${PROFILE_DIR}",
+  "${PROFILE}",
   "./${FUZZER_NAME}",
   "--",
   "--libafl-in",
-  "../libfuzzer_libpng/corpus",
+  "./corpus",
   "--libafl-out",
   "./out",
   "./${FUZZER_NAME}",
 ]
-dependencies = ["harness", "fuzzer"]
+dependencies = ["harness"]
 
 # Run the fuzzer
 [tasks.test]
@@ -93,7 +89,13 @@ windows_alias = "unsupported"
 [tasks.test_unix]
 script_runner = "@shell"
 script = '''
-echo "This test is skipped. QEMU-based fuzzer doesn't work on Github runners"
+timeout 15s ${TARGET_DIR}/${PROFILE_DIR}/fuzzbench_fork_qemu ${PROJECT_DIR}/harness -- --libafl-in ${PROJECT_DIR}/../../inprocess/libfuzzer_libpng/corpus --libafl-out ${PROJECT_DIR}/out ${PROJECT_DIR}/harness | tee fuzz_stdout.log
+if grep -qa "objectives: 1" fuzz_stdout.log; then
+    echo "Fuzzer is working"
+else
+    echo "Fuzzer does not generate any testcases or any crashes"
+    exit 1
+fi
 '''
 dependencies = ["harness", "fuzzer"]
 
@@ -108,7 +110,6 @@ windows_alias = "unsupported"
 clear = true
 script_runner = "@shell"
 script = '''
-rm -f ./${FUZZER_NAME} libfuzzer_main.o
+rm -f ./${FUZZER_NAME}
-make -C libpng-1.6.37 clean
 cargo clean
 '''

fuzzers/binary_only/fuzzbench_fork_qemu/fuzz.c

@@ -0,0 +1,19 @@
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (Size >= 8 && *(uint32_t *)Data == 0xaabbccdd) { abort(); }
+  char buf[8] = {'a', 'b', 'c', 'd'};
+
+  if (memcmp(Data, buf, 4) == 0) { abort(); }
+  return 0;
+}
+
+/*
+int main() {
+
+  char buf [10] = {0};
+  LLVMFuzzerTestOneInput(buf, 10);
+
+}*/

fuzzers/binary_only/fuzzbench_fork_qemu/src/fuzzer.rs

@@ -39,7 +39,7 @@ use libafl::{
 };
 use libafl_bolts::{
     current_time,
-    os::{dup2, unix_signals::Signal},
+    os::dup2,
     rands::StdRand,
     shmem::{ShMemProvider, StdShMemProvider},
     tuples::{tuple_list, Merge},
@@ -50,11 +50,12 @@ use libafl_qemu::{
     filter_qemu_args,
     modules::{
         cmplog::{CmpLogChildModule, CmpLogMap, CmpLogObserver},
-        edges::{StdEdgeCoverageChildModule, EDGES_MAP_PTR, EDGES_MAP_SIZE_IN_USE},
+        edges::StdEdgeCoverageChildModule,
     },
     Emulator, GuestReg, MmapPerms, QemuExitError, QemuExitReason, QemuForkExecutor,
     QemuShutdownCause, Regs,
 };
+use libafl_targets::{EDGES_MAP_DEFAULT_SIZE, EDGES_MAP_PTR};
 #[cfg(unix)]
 use nix::unistd::dup;
 
@@ -148,10 +149,26 @@ fn fuzz(
     env::remove_var("LD_LIBRARY_PATH");
 
     let args: Vec<String> = env::args().collect();
-    let env: Vec<(String, String)> = env::vars().collect();
+
+    let mut shmem_provider = StdShMemProvider::new()?;
+
+    let mut edges_shmem = shmem_provider.new_shmem(EDGES_MAP_DEFAULT_SIZE).unwrap();
+    let edges = edges_shmem.as_slice_mut();
+    unsafe { EDGES_MAP_PTR = edges.as_mut_ptr() };
+
+    // Create an observation channel using the coverage map
+    let mut edges_observer = unsafe {
+        HitcountsMapObserver::new(ConstMapObserver::<_, EDGES_MAP_DEFAULT_SIZE>::from_mut_ptr(
+            "edges",
+            edges.as_mut_ptr(),
+        ))
+        .track_indices()
+    };
 
     let emulator_modules = tuple_list!(
-        StdEdgeCoverageChildModule::builder().build(),
+        StdEdgeCoverageChildModule::builder()
+            .map_observer(edges_observer.as_mut())
+            .build()?,
         CmpLogChildModule::default(),
     );
 
@@ -218,12 +235,6 @@ fn fuzz(
         writeln!(log.borrow_mut(), "{:?} {s}", current_time()).unwrap();
     });
 
-    let mut shmem_provider = StdShMemProvider::new()?;
-
-    let mut edges_shmem = shmem_provider.new_shmem(EDGES_MAP_SIZE_IN_USE).unwrap();
-    let edges = edges_shmem.as_slice_mut();
-    unsafe { EDGES_MAP_PTR = edges.as_mut_ptr() };
-
     let mut cmp_shmem = shmem_provider.uninit_on_shmem::<CmpLogMap>().unwrap();
     let cmplog = cmp_shmem.as_slice_mut();
 
@@ -247,15 +258,6 @@ fn fuzz(
         },
     };
 
-    // Create an observation channel using the coverage map
-    let edges_observer = unsafe {
-        HitcountsMapObserver::new(ConstMapObserver::<_, EDGES_MAP_SIZE_IN_USE>::from_mut_ptr(
-            "edges",
-            edges.as_mut_ptr(),
-        ))
-        .track_indices()
-    };
-
     // Create an observation channel to keep track of the execution time
     let time_observer = TimeObserver::new("time");
 
@@ -321,7 +323,7 @@ fn fuzz(
     let mut fuzzer = StdFuzzer::new(scheduler, feedback, objective);
 
     // The wrapped harness function, calling out to the LLVM-style harness
-    let mut harness = |input: &BytesInput| {
+    let mut harness = |emulator: &mut Emulator<_, _, _, _, _>, input: &BytesInput| {
         let target = input.target_bytes();
         let mut buf = target.as_slice();
         let mut len = buf.len();
@@ -339,16 +341,17 @@ fn fuzz(
             qemu.write_reg(Regs::Rsp, stack_ptr).unwrap();
 
             match qemu.run() {
-                Ok(QemuExitReason::Breakpoint(_)) => {}
+                Ok(QemuExitReason::Breakpoint(_)) => ExitKind::Ok,
-                Ok(QemuExitReason::End(QemuShutdownCause::HostSignal(Signal::SigInterrupt))) => {
+                Ok(QemuExitReason::End(QemuShutdownCause::HostSignal(signal))) => {
-                    process::exit(0)
+                    signal.handle();
+                    panic!("Unexpected signal: {signal:?}");
+                }
+                Err(QemuExitError::UnexpectedExit) => ExitKind::Crash,
+                _ => {
+                    panic!("Unexpected QEMU exit.")
                 }
-                Err(QemuExitError::UnexpectedExit) => return ExitKind::Crash,
-                _ => panic!("Unexpected QEMU exit."),
             }
         }
-
-        ExitKind::Ok
     };
 
     let executor = QemuForkExecutor::new(
@@ -391,8 +394,8 @@ fn fuzz(
     #[cfg(unix)]
     {
         let null_fd = file_null.as_raw_fd();
-        dup2(null_fd, io::stdout().as_raw_fd())?;
+        // dup2(null_fd, io::stdout().as_raw_fd())?;
-        dup2(null_fd, io::stderr().as_raw_fd())?;
+        // dup2(null_fd, io::stderr().as_raw_fd())?;
     }
     // reopen file to make sure we're at the end
     log.replace(

fuzzers/binary_only/fuzzbench_qemu/Cargo.toml

@@ -29,6 +29,7 @@ libafl_qemu = { path = "../../../libafl_qemu", features = [
   "x86_64",
   "usermode",
 ] }
+libafl_targets = { path = "../../../libafl_targets", version = "0.13.2" }
 
 log = { version = "0.4.22", features = ["release_max_level_info"] }
 clap = { version = "4.5.18", features = ["default"] }

fuzzers/binary_only/fuzzbench_qemu/Makefile.toml

@@ -1,11 +1,12 @@
 # Variables
 [env]
-FUZZER_NAME = 'libpng_harness'
+FUZZER_NAME = 'harness'
 PROJECT_DIR = { script = ["pwd"] }
 PROFILE = { value = "release", condition = { env_not_set = ["PROFILE"] } }
 PROFILE_DIR = { value = "release", condition = { env_not_set = [
   "PROFILE_DIR",
 ] } }
+TARGET_DIR = "${CARGO_MAKE_CRATE_TARGET_DIRECTORY}"
 
 [tasks.unsupported]
 script_runner = "@shell"
@@ -13,20 +14,6 @@ script = '''
 echo "Qemu fuzzer not supported on windows"
 '''
 
-# libpng
-[tasks.libpng]
-linux_alias = "libpng_unix"
-mac_alias = "libpng_unix"
-windows_alias = "unsupported"
-
-[tasks.libpng_unix]
-condition = { files_not_exist = ["./libpng-1.6.37"] }
-script_runner = "@shell"
-script = '''
-wget https://github.com/glennrp/libpng/archive/refs/tags/v1.6.37.tar.gz
-tar -xvf v1.6.37.tar.gz
-'''
-
 # fuzzer
 [tasks.fuzzer]
 linux_alias = "fuzzer_unix"
@@ -46,20 +33,13 @@ windows_alias = "unsupported"
 [tasks.harness_unix]
 script_runner = "@shell"
 script = '''
-cd libpng-1.6.37 && ./configure --enable-shared=no --with-pic=yes --enable-hardware-optimizations=yes
-cd "${PROJECT_DIR}"
-make -C libpng-1.6.37
 cc -c "${PROJECT_DIR}/libfuzzer_main.c"
-# Build the libpng harness    
+cc \
-c++ \
+    ./fuzz.c \
-    ../../inprocess/libfuzzer_libpng/harness.cc \
-    ./libpng-1.6.37/.libs/libpng16.a \
     ./libfuzzer_main.o \
-    -I./libpng-1.6.37/ \
     -o ${FUZZER_NAME} \
     -lm -lz
 '''
-dependencies = ["libpng"]
 
 # Run the fuzzer
 [tasks.run]
@@ -81,7 +61,7 @@ args = [
   "./out",
   "./${FUZZER_NAME}",
 ]
-dependencies = ["harness", "fuzzer"]
+dependencies = ["harness"]
 
 # Run the fuzzer
 [tasks.test]
@@ -93,7 +73,13 @@ windows_alias = "unsupported"
 [tasks.test_unix]
 script_runner = "@shell"
 script = '''
-echo "This test is skipped. QEMU-based fuzzer doesn't work on Github runners"
+timeout 15s ${TARGET_DIR}/${PROFILE_DIR}/fuzzbench_qemu ${PROJECT_DIR}/harness -- --libafl-in ${PROJECT_DIR}/../../inprocess/libfuzzer_libpng/corpus --libafl-out ${PROJECT_DIR}/out ${PROJECT_DIR}/harness | tee fuzz_stdout.log
+if grep -qa "objectives: 1" fuzz_stdout.log; then
+    echo "Fuzzer is working"
+else
+    echo "Fuzzer does not generate any testcases or any crashes"
+    exit 1
+fi
 '''
 dependencies = ["harness", "fuzzer"]
 
@@ -108,7 +94,6 @@ windows_alias = "unsupported"
 clear = true
 script_runner = "@shell"
 script = '''
-rm -f ./${FUZZER_NAME} libfuzzer_main.o
+rm -f ./${FUZZER_NAME}
-make -C libpng-1.6.37 clean
 cargo clean
 '''

fuzzers/binary_only/fuzzbench_qemu/fuzz.c

@@ -0,0 +1,19 @@
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  if (Size >= 8 && *(uint32_t *)Data == 0xaabbccdd) { abort(); }
+  char buf[8] = {'a', 'b', 'c', 'd'};
+
+  if (memcmp(Data, buf, 4) == 0) { abort(); }
+  return 0;
+}
+
+/*
+int main() {
+
+  char buf [10] = {0};
+  LLVMFuzzerTestOneInput(buf, 10);
+
+}*/

fuzzers/binary_only/fuzzbench_qemu/src/fuzzer.rs

@@ -38,7 +38,7 @@ use libafl::{
 };
 use libafl_bolts::{
     current_time,
-    os::{dup2, unix_signals::Signal},
+    os::dup2,
     ownedref::OwnedMutSlice,
     rands::StdRand,
     shmem::{ShMemProvider, StdShMemProvider},
@@ -50,9 +50,7 @@ use libafl_qemu::{
     filter_qemu_args,
     // asan::{init_with_asan, QemuAsanHelper},
     modules::cmplog::{CmpLogModule, CmpLogObserver},
-    modules::edges::{
+    modules::edges::StdEdgeCoverageModule,
-        edges_map_mut_ptr, StdEdgeCoverageModule, EDGES_MAP_SIZE_IN_USE, MAX_EDGES_FOUND,
-    },
     Emulator,
     GuestReg,
     //snapshot::QemuSnapshotHelper,
@@ -64,6 +62,7 @@ use libafl_qemu::{
     QemuShutdownCause,
     Regs,
 };
+use libafl_targets::{edges_map_mut_ptr, EDGES_MAP_ALLOCATED_SIZE, MAX_EDGES_FOUND};
 #[cfg(unix)]
 use nix::unistd::dup;
 
@@ -253,10 +252,10 @@ fn fuzz(
     };
 
     // Create an observation channel using the coverage map
-    let edges_observer = unsafe {
+    let mut edges_observer = unsafe {
         HitcountsMapObserver::new(VariableMapObserver::from_mut_slice(
             "edges",
-            OwnedMutSlice::from_raw_parts_mut(edges_map_mut_ptr(), EDGES_MAP_SIZE_IN_USE),
+            OwnedMutSlice::from_raw_parts_mut(edges_map_mut_ptr(), EDGES_MAP_ALLOCATED_SIZE),
             addr_of_mut!(MAX_EDGES_FOUND),
         ))
         .track_indices()
@@ -347,9 +346,9 @@ fn fuzz(
 
                 match qemu.run() {
                     Ok(QemuExitReason::Breakpoint(_)) => {}
-                    Ok(QemuExitReason::End(QemuShutdownCause::HostSignal(
+                    Ok(QemuExitReason::End(QemuShutdownCause::HostSignal(signal))) => {
-                        Signal::SigInterrupt,
+                        signal.handle();
-                    ))) => process::exit(0),
+                    }
                     Err(QemuExitError::UnexpectedExit) => return ExitKind::Crash,
                     _ => panic!("Unexpected QEMU exit."),
                 }
@@ -359,7 +358,10 @@ fn fuzz(
         };
 
     let modules = tuple_list!(
-        StdEdgeCoverageModule::builder().build(),
+        StdEdgeCoverageModule::builder()
+            .map_observer(edges_observer.as_mut())
+            .build()
+            .unwrap(),
         CmpLogModule::default(),
         // QemuAsanHelper::default(asan),
         //QemuSnapshotHelper::new()

fuzzers/binary_only/qemu_cmin/Cargo.toml

@@ -34,5 +34,6 @@ clap = { version = "4.5.18", features = ["derive", "string"] }
 libafl = { path = "../../../libafl" }
 libafl_bolts = { path = "../../../libafl_bolts" }
 libafl_qemu = { path = "../../../libafl_qemu", features = ["usermode"] }
+libafl_targets = { path = "../../../libafl_targets" }
 log = { version = "0.4.22", features = ["release_max_level_info"] }
 rangemap = { version = "1.5.1" }

fuzzers/binary_only/qemu_cmin/src/fuzzer.rs

@@ -27,11 +27,11 @@ use libafl_bolts::{
     AsSlice, AsSliceMut,
 };
 use libafl_qemu::{
-    elf::EasyElf,
+    elf::EasyElf, modules::edges::StdEdgeCoverageChildModule, ArchExtras, CallingConvention,
-    modules::edges::{StdEdgeCoverageChildModule, EDGES_MAP_PTR, EDGES_MAP_SIZE_IN_USE},
+    Emulator, GuestAddr, GuestReg, MmapPerms, Qemu, QemuExitError, QemuExitReason,
-    ArchExtras, CallingConvention, Emulator, GuestAddr, GuestReg, MmapPerms, Qemu, QemuExitError,
+    QemuForkExecutor, QemuShutdownCause, Regs,
-    QemuExitReason, QemuForkExecutor, QemuShutdownCause, Regs,
 };
+use libafl_targets::{EDGES_MAP_DEFAULT_SIZE, EDGES_MAP_PTR};
 
 #[derive(Default)]
 pub struct Version;
@@ -155,12 +155,12 @@ pub fn fuzz() -> Result<(), Error> {
         },
     };
 
-    let mut edges_shmem = shmem_provider.new_shmem(EDGES_MAP_SIZE_IN_USE).unwrap();
+    let mut edges_shmem = shmem_provider.new_shmem(EDGES_MAP_DEFAULT_SIZE).unwrap();
     let edges = edges_shmem.as_slice_mut();
     unsafe { EDGES_MAP_PTR = edges.as_mut_ptr() };
 
-    let edges_observer = unsafe {
+    let mut edges_observer = unsafe {
-        HitcountsMapObserver::new(ConstMapObserver::<_, EDGES_MAP_SIZE_IN_USE>::from_mut_ptr(
+        HitcountsMapObserver::new(ConstMapObserver::<_, EDGES_MAP_DEFAULT_SIZE>::from_mut_ptr(
             "edges",
             edges.as_mut_ptr(),
         ))
@@ -185,7 +185,7 @@ pub fn fuzz() -> Result<(), Error> {
     let scheduler = QueueScheduler::new();
     let mut fuzzer = StdFuzzer::new(scheduler, feedback, objective);
 
-    let mut harness = |input: &BytesInput| {
+    let mut harness = |_emulator: &mut Emulator<_, _, _, _, _>, input: &BytesInput| {
         let target = input.target_bytes();
         let mut buf = target.as_slice();
         let mut len = buf.len();
@@ -218,7 +218,9 @@ pub fn fuzz() -> Result<(), Error> {
         ExitKind::Ok
     };
 
-    let modules = tuple_list!(StdEdgeCoverageChildModule::builder().build());
+    let modules = tuple_list!(StdEdgeCoverageChildModule::builder()
+        .map_observer(edges_observer.as_mut())
+        .build()?);
 
     let emulator = Emulator::empty().qemu(qemu).modules(modules).build()?;
 

fuzzers/binary_only/qemu_launcher/Cargo.toml

@@ -47,6 +47,7 @@ libafl_bolts = { path = "../../../libafl_bolts", features = [
   "errors_backtrace",
 ] }
 libafl_qemu = { path = "../../../libafl_qemu", features = ["usermode"] }
+libafl_targets = { path = "../../../libafl_targets" }
 log = { version = "0.4.22", features = ["release_max_level_info"] }
 nix = { version = "0.29.0", features = ["fs"] }
 rangemap = { version = "1.5.1" }

fuzzers/binary_only/qemu_launcher/src/client.rs

@@ -1,4 +1,4 @@
-use std::{env, ops::Range};
+use std::env;
 
 use libafl::{
     corpus::{InMemoryOnDiskCorpus, OnDiskCorpus},
@@ -16,8 +16,6 @@ use libafl_qemu::{
         asan::{init_qemu_with_asan, AsanModule},
         asan_guest::{init_qemu_with_asan_guest, AsanGuestModule},
         cmplog::CmpLogModule,
-        edges::StdEdgeCoverageModule,
-        StdAddressFilter,
     },
     ArchExtras, GuestAddr, Qemu,
 };
@@ -57,7 +55,7 @@ impl<'a> Client<'a> {
             .collect::<Vec<(String, String)>>()
     }
 
-    fn start_pc(qemu: &Qemu) -> Result<GuestAddr, Error> {
+    fn start_pc(qemu: Qemu) -> Result<GuestAddr, Error> {
         let mut elf_buffer = Vec::new();
         let elf = EasyElf::from_file(qemu.binary_path(), &mut elf_buffer)?;
 
@@ -67,39 +65,6 @@ impl<'a> Client<'a> {
         Ok(start_pc)
     }
 
-    #[allow(clippy::similar_names)] // elf != self
-    fn coverage_filter(&self, qemu: &Qemu) -> Result<StdAddressFilter, Error> {
-        /* Conversion is required on 32-bit targets, but not on 64-bit ones */
-        if let Some(includes) = &self.options.include {
-            #[cfg_attr(target_pointer_width = "64", allow(clippy::useless_conversion))]
-            let rules = includes
-                .iter()
-                .map(|x| Range {
-                    start: x.start.into(),
-                    end: x.end.into(),
-                })
-                .collect::<Vec<Range<GuestAddr>>>();
-            Ok(StdAddressFilter::allow_list(rules))
-        } else if let Some(excludes) = &self.options.exclude {
-            #[cfg_attr(target_pointer_width = "64", allow(clippy::useless_conversion))]
-            let rules = excludes
-                .iter()
-                .map(|x| Range {
-                    start: x.start.into(),
-                    end: x.end.into(),
-                })
-                .collect::<Vec<Range<GuestAddr>>>();
-            Ok(StdAddressFilter::deny_list(rules))
-        } else {
-            let mut elf_buffer = Vec::new();
-            let elf = EasyElf::from_file(qemu.binary_path(), &mut elf_buffer)?;
-            let range = elf
-                .get_section(".text", qemu.load_addr())
-                .ok_or_else(|| Error::key_not_found("Failed to find .text section"))?;
-            Ok(StdAddressFilter::allow_list(vec![range]))
-        }
-    }
-
     pub fn run<M: Monitor>(
         &self,
         state: Option<ClientState>,
@@ -131,7 +96,7 @@ impl<'a> Client<'a> {
             }
         };
 
-        let start_pc = Self::start_pc(&qemu)?;
+        let start_pc = Self::start_pc(qemu)?;
         log::debug!("start_pc @ {start_pc:#x}");
 
         #[cfg(not(feature = "injections"))]
@@ -163,10 +128,6 @@ impl<'a> Client<'a> {
 
         let is_cmplog = self.options.is_cmplog_core(core_id);
 
-        let edge_coverage_module = StdEdgeCoverageModule::builder()
-            .address_filter(self.coverage_filter(&qemu)?)
-            .build();
-
         let extra_tokens = injection_module
             .as_ref()
             .map(|h| h.tokens.clone())
@@ -174,7 +135,7 @@ impl<'a> Client<'a> {
 
         let instance_builder = Instance::builder()
             .options(self.options)
-            .qemu(&qemu)
+            .qemu(qemu)
             .mgr(mgr)
             .core_id(core_id)
             .extra_tokens(extra_tokens);
@@ -183,7 +144,6 @@ impl<'a> Client<'a> {
             if let Some(injection_module) = injection_module {
                 instance_builder.build().run(
                     tuple_list!(
-                        edge_coverage_module,
                         CmpLogModule::default(),
                         AsanModule::default(asan.take().unwrap()),
                         injection_module,
@@ -193,7 +153,6 @@ impl<'a> Client<'a> {
             } else {
                 instance_builder.build().run(
                     tuple_list!(
-                        edge_coverage_module,
                         CmpLogModule::default(),
                         AsanModule::default(asan.take().unwrap()),
                     ),
@@ -204,9 +163,8 @@ impl<'a> Client<'a> {
             if let Some(injection_module) = injection_module {
                 instance_builder.build().run(
                     tuple_list!(
-                        edge_coverage_module,
                         CmpLogModule::default(),
-                        AsanGuestModule::default(&qemu, asan_lib.take().unwrap()),
+                        AsanGuestModule::default(qemu, asan_lib.take().unwrap()),
                         injection_module
                     ),
                     state,
@@ -214,9 +172,8 @@ impl<'a> Client<'a> {
             } else {
                 instance_builder.build().run(
                     tuple_list!(
-                        edge_coverage_module,
                         CmpLogModule::default(),
-                        AsanGuestModule::default(&qemu, asan_lib.take().unwrap()),
+                        AsanGuestModule::default(qemu, asan_lib.take().unwrap()),
                     ),
                     state,
                 )
@@ -224,52 +181,35 @@ impl<'a> Client<'a> {
         } else if is_asan {
             if let Some(injection_module) = injection_module {
                 instance_builder.build().run(
-                    tuple_list!(
+                    tuple_list!(AsanModule::default(asan.take().unwrap()), injection_module),
-                        edge_coverage_module,
-                        AsanModule::default(asan.take().unwrap()),
-                        injection_module
-                    ),
                     state,
                 )
             } else {
                 instance_builder.build().run(
-                    tuple_list!(
+                    tuple_list!(AsanModule::default(asan.take().unwrap()),),
-                        edge_coverage_module,
-                        AsanModule::default(asan.take().unwrap()),
-                    ),
                     state,
                 )
             }
         } else if is_asan_guest {
-            let modules = tuple_list!(
+            let modules = tuple_list!(AsanGuestModule::default(qemu, asan_lib.take().unwrap()));
-                edge_coverage_module,
-                AsanGuestModule::default(&qemu, asan_lib.take().unwrap())
-            );
             instance_builder.build().run(modules, state)
         } else if is_cmplog {
             if let Some(injection_module) = injection_module {
                 instance_builder.build().run(
-                    tuple_list!(
+                    tuple_list!(CmpLogModule::default(), injection_module),
-                        edge_coverage_module,
-                        CmpLogModule::default(),
-                        injection_module
-                    ),
                     state,
                 )
             } else {
-                instance_builder.build().run(
+                instance_builder
-                    tuple_list!(edge_coverage_module, CmpLogModule::default()),
+                    .build()
-                    state,
+                    .run(tuple_list!(CmpLogModule::default()), state)
-                )
             }
         } else if let Some(injection_module) = injection_module {
             instance_builder
                 .build()
-                .run(tuple_list!(edge_coverage_module, injection_module), state)
+                .run(tuple_list!(injection_module), state)
         } else {
-            instance_builder
+            instance_builder.build().run(tuple_list!(), state)
-                .build()
-                .run(tuple_list!(edge_coverage_module), state)
         }
     }
 }

fuzzers/binary_only/qemu_launcher/src/harness.rs

@@ -6,8 +6,8 @@ use libafl::{
 use libafl_bolts::AsSlice;
 use libafl_qemu::{ArchExtras, CallingConvention, GuestAddr, GuestReg, MmapPerms, Qemu, Regs};
 
-pub struct Harness<'a> {
+pub struct Harness {
-    qemu: &'a Qemu,
+    qemu: Qemu,
     input_addr: GuestAddr,
     pc: GuestAddr,
     stack_ptr: GuestAddr,
@@ -16,8 +16,8 @@ pub struct Harness<'a> {
 
 pub const MAX_INPUT_SIZE: usize = 1_048_576; // 1MB
 
-impl<'a> Harness<'a> {
+impl Harness {
-    pub fn new(qemu: &Qemu) -> Result<Harness, Error> {
+    pub fn new(qemu: Qemu) -> Result<Harness, Error> {
         let input_addr = qemu
             .map_private(0, MAX_INPUT_SIZE, MmapPerms::ReadWrite)
             .map_err(|e| Error::unknown(format!("Failed to map input buffer: {e:}")))?;

fuzzers/binary_only/qemu_launcher/src/instance.rs

@@ -1,5 +1,5 @@
 use core::{fmt::Debug, ptr::addr_of_mut};
-use std::{marker::PhantomData, process};
+use std::{marker::PhantomData, ops::Range, process};
 
 #[cfg(feature = "simplemgr")]
 use libafl::events::SimpleEventManager;
@@ -35,16 +35,16 @@ use libafl_bolts::{
     core_affinity::CoreId,
     ownedref::OwnedMutSlice,
     rands::StdRand,
-    tuples::{tuple_list, Merge},
+    tuples::{tuple_list, Merge, Prepend},
 };
 use libafl_qemu::{
+    elf::EasyElf,
     modules::{
-        cmplog::CmpLogObserver,
+        cmplog::CmpLogObserver, EmulatorModuleTuple, StdAddressFilter, StdEdgeCoverageModule,
-        edges::{edges_map_mut_ptr, EDGES_MAP_SIZE_IN_USE, MAX_EDGES_FOUND},
-        EmulatorModuleTuple,
     },
-    Emulator, Qemu, QemuExecutor,
+    Emulator, GuestAddr, Qemu, QemuExecutor,
 };
+use libafl_targets::{edges_map_mut_ptr, EDGES_MAP_DEFAULT_SIZE, MAX_EDGES_FOUND};
 use typed_builder::TypedBuilder;
 
 use crate::{harness::Harness, options::FuzzerOptions};
@@ -61,7 +61,7 @@ pub type ClientMgr<M> =
 #[derive(TypedBuilder)]
 pub struct Instance<'a, M: Monitor> {
     options: &'a FuzzerOptions,
-    qemu: &'a Qemu,
+    qemu: Qemu,
     mgr: ClientMgr<M>,
     core_id: CoreId,
     #[builder(default)]
@@ -71,20 +71,60 @@ pub struct Instance<'a, M: Monitor> {
 }
 
 impl<'a, M: Monitor> Instance<'a, M> {
+    #[allow(clippy::similar_names)] // elf != self
+    fn coverage_filter(&self, qemu: Qemu) -> Result<StdAddressFilter, Error> {
+        /* Conversion is required on 32-bit targets, but not on 64-bit ones */
+        if let Some(includes) = &self.options.include {
+            #[cfg_attr(target_pointer_width = "64", allow(clippy::useless_conversion))]
+            let rules = includes
+                .iter()
+                .map(|x| Range {
+                    start: x.start.into(),
+                    end: x.end.into(),
+                })
+                .collect::<Vec<Range<GuestAddr>>>();
+            Ok(StdAddressFilter::allow_list(rules))
+        } else if let Some(excludes) = &self.options.exclude {
+            #[cfg_attr(target_pointer_width = "64", allow(clippy::useless_conversion))]
+            let rules = excludes
+                .iter()
+                .map(|x| Range {
+                    start: x.start.into(),
+                    end: x.end.into(),
+                })
+                .collect::<Vec<Range<GuestAddr>>>();
+            Ok(StdAddressFilter::deny_list(rules))
+        } else {
+            let mut elf_buffer = Vec::new();
+            let elf = EasyElf::from_file(qemu.binary_path(), &mut elf_buffer)?;
+            let range = elf
+                .get_section(".text", qemu.load_addr())
+                .ok_or_else(|| Error::key_not_found("Failed to find .text section"))?;
+            Ok(StdAddressFilter::allow_list(vec![range]))
+        }
+    }
+
     pub fn run<ET>(&mut self, modules: ET, state: Option<ClientState>) -> Result<(), Error>
     where
         ET: EmulatorModuleTuple<ClientState> + Debug,
     {
         // Create an observation channel using the coverage map
-        let edges_observer = unsafe {
+        let mut edges_observer = unsafe {
             HitcountsMapObserver::new(VariableMapObserver::from_mut_slice(
                 "edges",
-                OwnedMutSlice::from_raw_parts_mut(edges_map_mut_ptr(), EDGES_MAP_SIZE_IN_USE),
+                OwnedMutSlice::from_raw_parts_mut(edges_map_mut_ptr(), EDGES_MAP_DEFAULT_SIZE),
                 addr_of_mut!(MAX_EDGES_FOUND),
             ))
             .track_indices()
         };
 
+        let edge_coverage_module = StdEdgeCoverageModule::builder()
+            .map_observer(edges_observer.as_mut())
+            .address_filter(self.coverage_filter(self.qemu)?)
+            .build()?;
+
+        let modules = modules.prepend(edge_coverage_module);
+
         // Create an observation channel to keep track of the execution time
         let time_observer = TimeObserver::new("time");
 
@@ -154,10 +194,7 @@ impl<'a, M: Monitor> Instance<'a, M> {
         // A fuzzer with feedbacks and a corpus scheduler
         let mut fuzzer = StdFuzzer::new(scheduler, feedback, objective);
 
-        let emulator = Emulator::empty()
+        let emulator = Emulator::empty().qemu(self.qemu).modules(modules).build()?;
-            .qemu(*self.qemu)
-            .modules(modules)
-            .build()?;
 
         if self.options.is_cmplog_core(self.core_id) {
             // Create a QEMU in-process executor

fuzzers/forkserver/forkserver_libafl_cc/src/main.rs

@@ -24,7 +24,7 @@ use libafl_bolts::{
     tuples::{tuple_list, Handled, MatchNameRef, Merge},
     AsSliceMut, Truncate,
 };
-use libafl_targets::EDGES_MAP_SIZE_IN_USE;
+use libafl_targets::EDGES_MAP_DEFAULT_SIZE;
 use nix::sys::signal::Signal;
 
 /// The commandline args this fuzzer accepts
@@ -87,7 +87,7 @@ struct Opt {
 pub fn main() {
     env_logger::init();
 
-    const MAP_SIZE: usize = EDGES_MAP_SIZE_IN_USE; //65536;
+    const MAP_SIZE: usize = EDGES_MAP_DEFAULT_SIZE; //65536;
     let opt = Opt::parse();
 
     let corpus_dirs: Vec<PathBuf> = [opt.in_dir].to_vec();

fuzzers/full_system/qemu_baremetal/Cargo.toml

@@ -28,6 +28,7 @@ codegen-units = 1
 [dependencies]
 libafl = { path = "../../../libafl" }
 libafl_bolts = { path = "../../../libafl_bolts" }
+libafl_targets = { path = "../../../libafl_targets" }
 libafl_qemu = { path = "../../../libafl_qemu", features = [
   "arm",
   "systemmode",

fuzzers/full_system/qemu_baremetal/src/fuzzer_breakpoint.rs

@@ -33,11 +33,11 @@ use libafl_qemu::{
     elf::EasyElf,
     emu::Emulator,
     executor::QemuExecutor,
-    modules::edges::{
+    modules::edges::StdEdgeCoverageModule,
-        edges_map_mut_ptr, StdEdgeCoverageModule, EDGES_MAP_SIZE_IN_USE, MAX_EDGES_FOUND,
-    },
     GuestPhysAddr, GuestReg, QemuMemoryChunk,
 };
+use libafl_targets::{edges_map_mut_ptr, EDGES_MAP_DEFAULT_SIZE, MAX_EDGES_FOUND};
+
 // use libafl_qemu::QemuSnapshotBuilder; // for normal qemu snapshot
 
 pub static mut MAX_INPUT_SIZE: usize = 50;
@@ -86,10 +86,33 @@ pub fn fuzz() {
     let mut run_client = |state: Option<_>, mut mgr, _core_id| {
         let args: Vec<String> = env::args().collect();
 
+        // The wrapped harness function, calling out to the LLVM-style harness
+        let mut harness =
+            |emulator: &mut Emulator<_, _, _, _, _>, state: &mut _, input: &BytesInput| unsafe {
+                emulator.run(state, input).unwrap().try_into().unwrap()
+            };
+
+        // Create an observation channel using the coverage map
+        let mut edges_observer = unsafe {
+            HitcountsMapObserver::new(VariableMapObserver::from_mut_slice(
+                "edges",
+                OwnedMutSlice::from_raw_parts_mut(edges_map_mut_ptr(), EDGES_MAP_DEFAULT_SIZE),
+                addr_of_mut!(MAX_EDGES_FOUND),
+            ))
+            .track_indices()
+        };
+
+        // Create an observation channel to keep track of the execution time
+        let time_observer = TimeObserver::new("time");
+
         // Initialize QEMU Emulator
         let emu = Emulator::builder()
             .qemu_cli(args)
-            .add_module(StdEdgeCoverageModule::builder().build())
+            .add_module(
+                StdEdgeCoverageModule::builder()
+                    .map_observer(edges_observer.as_mut())
+                    .build()?,
+            )
             .build()
             .unwrap();
 
@@ -119,25 +142,6 @@ pub fn fuzz() {
         let devices = emu.list_devices();
         println!("Devices = {:?}", devices);
 
-        // The wrapped harness function, calling out to the LLVM-style harness
-        let mut harness =
-            |emulator: &mut Emulator<_, _, _, _, _>, state: &mut _, input: &BytesInput| unsafe {
-                emulator.run(state, input).unwrap().try_into().unwrap()
-            };
-
-        // Create an observation channel using the coverage map
-        let edges_observer = unsafe {
-            HitcountsMapObserver::new(VariableMapObserver::from_mut_slice(
-                "edges",
-                OwnedMutSlice::from_raw_parts_mut(edges_map_mut_ptr(), EDGES_MAP_SIZE_IN_USE),
-                addr_of_mut!(MAX_EDGES_FOUND),
-            ))
-            .track_indices()
-        };
-
-        // Create an observation channel to keep track of the execution time
-        let time_observer = TimeObserver::new("time");
-
         // Feedback to rate the interestingness of an input
         // This one is composed by two Feedbacks in OR
         let mut feedback = feedback_or!(

fuzzers/full_system/qemu_baremetal/src/fuzzer_low_level.rs

@@ -29,15 +29,11 @@ use libafl_bolts::{
     AsSlice,
 };
 use libafl_qemu::{
-    config,
+    config, elf::EasyElf, executor::QemuExecutor, modules::edges::StdEdgeCoverageModuleBuilder,
-    elf::EasyElf,
-    executor::QemuExecutor,
-    modules::edges::{
-        edges_map_mut_ptr, StdEdgeCoverageModuleBuilder, EDGES_MAP_SIZE_IN_USE, MAX_EDGES_FOUND,
-    },
     Emulator, Qemu, QemuExitError, QemuExitReason, QemuRWError, QemuShutdownCause, Regs,
 };
 use libafl_qemu_sys::GuestPhysAddr;
+use libafl_targets::{edges_map_mut_ptr, EDGES_MAP_DEFAULT_SIZE, MAX_EDGES_FOUND};
 
 pub static mut MAX_INPUT_SIZE: usize = 50;
 
@@ -86,6 +82,17 @@ pub fn fuzz() {
 
     let mut run_client = |state: Option<_>, mut mgr, _core_id| {
         let target_dir = env::var("TARGET_DIR").expect("TARGET_DIR env not set");
+
+        // Create an observation channel using the coverage map
+        let mut edges_observer = unsafe {
+            HitcountsMapObserver::new(VariableMapObserver::from_mut_slice(
+                "edges",
+                OwnedMutSlice::from_raw_parts_mut(edges_map_mut_ptr(), EDGES_MAP_DEFAULT_SIZE),
+                addr_of_mut!(MAX_EDGES_FOUND),
+            ))
+            .track_indices()
+        };
+
         // Initialize QEMU
         let qemu = Qemu::builder()
             .machine("mps2-an385")
@@ -103,7 +110,9 @@ pub fn fuzz() {
             .build()
             .expect("Failed to initialized QEMU");
 
-        let emulator_modules = tuple_list!(StdEdgeCoverageModuleBuilder::default().build());
+        let emulator_modules = tuple_list!(StdEdgeCoverageModuleBuilder::default()
+            .map_observer(edges_observer.as_mut())
+            .build()?);
 
         let emulator = Emulator::empty()
             .qemu(qemu)
@@ -186,16 +195,6 @@ pub fn fuzz() {
                 }
             };
 
-        // Create an observation channel using the coverage map
-        let edges_observer = unsafe {
-            HitcountsMapObserver::new(VariableMapObserver::from_mut_slice(
-                "edges",
-                OwnedMutSlice::from_raw_parts_mut(edges_map_mut_ptr(), EDGES_MAP_SIZE_IN_USE),
-                addr_of_mut!(MAX_EDGES_FOUND),
-            ))
-            .track_indices()
-        };
-
         // Create an observation channel to keep track of the execution time
         let time_observer = TimeObserver::new("time");
 

fuzzers/full_system/qemu_baremetal/src/fuzzer_sync_exit.rs

@@ -26,13 +26,8 @@ use libafl_bolts::{
     shmem::{ShMemProvider, StdShMemProvider},
     tuples::tuple_list,
 };
-use libafl_qemu::{
+use libafl_qemu::{emu::Emulator, executor::QemuExecutor, modules::edges::StdEdgeCoverageModule};
-    emu::Emulator,
+use libafl_targets::{edges_map_mut_ptr, EDGES_MAP_DEFAULT_SIZE, MAX_EDGES_FOUND};
-    executor::QemuExecutor,
-    modules::edges::{
-        edges_map_mut_ptr, StdEdgeCoverageModule, EDGES_MAP_SIZE_IN_USE, MAX_EDGES_FOUND,
-    },
-};
 // use libafl_qemu::QemuSnapshotBuilder; for normal qemu snapshot
 
 pub fn fuzz() {
@@ -52,8 +47,20 @@ pub fn fuzz() {
         // Initialize QEMU
         let args: Vec<String> = env::args().collect();
 
+        // Create an observation channel using the coverage map
+        let mut edges_observer = unsafe {
+            HitcountsMapObserver::new(VariableMapObserver::from_mut_slice(
+                "edges",
+                OwnedMutSlice::from_raw_parts_mut(edges_map_mut_ptr(), EDGES_MAP_DEFAULT_SIZE),
+                addr_of_mut!(MAX_EDGES_FOUND),
+            ))
+            .track_indices()
+        };
+
         // Choose modules to use
-        let modules = tuple_list!(StdEdgeCoverageModule::builder().build());
+        let modules = tuple_list!(StdEdgeCoverageModule::builder()
+            .map_observer(edges_observer.as_mut())
+            .build()?);
 
         let emu = Emulator::builder()
             .qemu_cli(args)
@@ -69,16 +76,6 @@ pub fn fuzz() {
                 emulator.run(state, input).unwrap().try_into().unwrap()
             };
 
-        // Create an observation channel using the coverage map
-        let edges_observer = unsafe {
-            HitcountsMapObserver::new(VariableMapObserver::from_mut_slice(
-                "edges",
-                OwnedMutSlice::from_raw_parts_mut(edges_map_mut_ptr(), EDGES_MAP_SIZE_IN_USE),
-                addr_of_mut!(MAX_EDGES_FOUND),
-            ))
-            .track_indices()
-        };
-
         // Create an observation channel to keep track of the execution time
         let time_observer = TimeObserver::new("time");
 

fuzzers/full_system/qemu_linux_kernel/README.md

@@ -2,6 +2,12 @@
 
 This folder contains an example linux kernel fuzzer using qemu systemmode.
 
+## Warning
+
+For now, only the fuzzer is public. We plan to release the auto-builder for linux
+images in the near future.
+If you wish to experiment now, you will need to build the linux image manually.
+
 ## Prerequisite
 
 TODO

fuzzers/full_system/qemu_linux_kernel/src/fuzzer.rs

@@ -36,7 +36,8 @@ use libafl_qemu::{
     modules::{
         cmplog::CmpLogObserver,
         edges::{
-            edges_map_mut_ptr, StdEdgeCoverageClassicModule, EDGES_MAP_SIZE_MAX, MAX_EDGES_FOUND,
+            edges_map_mut_ptr, StdEdgeCoverageClassicModule, EDGES_MAP_ALLOCATED_SIZE,
+            MAX_EDGES_FOUND,
         },
         CmpLogModule,
     },
@@ -89,7 +90,7 @@ pub fn fuzz() {
         let edges_observer = unsafe {
             HitcountsMapObserver::new(VariableMapObserver::from_mut_slice(
                 "edges",
-                OwnedMutSlice::from_raw_parts_mut(edges_map_mut_ptr(), EDGES_MAP_SIZE_MAX),
+                OwnedMutSlice::from_raw_parts_mut(edges_map_mut_ptr(), EDGES_MAP_ALLOCATED_SIZE),
                 addr_of_mut!(MAX_EDGES_FOUND),
             ))
             .track_indices()

fuzzers/full_system/qemu_linux_process/README.md

@@ -3,6 +3,12 @@
 This folder contains an example linux process fuzzer using qemu systemmode.
 This is demo, most of the time for classic linux process fuzzing, it is better to use a more conventional method.
 
+## Warning
+
+For now, only the fuzzer is public. We plan to release the auto-builder for linux
+images in the near future.
+If you wish to experiment now, you will need to build the linux image manually.
+
 ## Prerequisite
 
 TODO

fuzzers/full_system/qemu_linux_process/src/fuzzer.rs

@@ -36,7 +36,8 @@ use libafl_qemu::{
     modules::{
         cmplog::CmpLogObserver,
         edges::{
-            edges_map_mut_ptr, StdEdgeCoverageClassicModule, EDGES_MAP_SIZE_MAX, MAX_EDGES_FOUND,
+            edges_map_mut_ptr, StdEdgeCoverageClassicModule, EDGES_MAP_ALLOCATED_SIZE,
+            MAX_EDGES_FOUND,
         },
         CmpLogModule,
     },
@@ -91,7 +92,7 @@ pub fn fuzz() {
         let edges_observer = unsafe {
             HitcountsMapObserver::new(VariableMapObserver::from_mut_slice(
                 "edges",
-                OwnedMutSlice::from_raw_parts_mut(edges_map_mut_ptr(), EDGES_MAP_SIZE_MAX),
+                OwnedMutSlice::from_raw_parts_mut(edges_map_mut_ptr(), EDGES_MAP_ALLOCATED_SIZE),
                 addr_of_mut!(MAX_EDGES_FOUND),
             ))
             .track_indices()

fuzzers/inprocess/fuzzbench_ctx/src/lib.rs

@@ -55,7 +55,7 @@ use libafl_bolts::{
 use libafl_targets::autotokens;
 use libafl_targets::{
     edges_map_mut_ptr, libfuzzer_initialize, libfuzzer_test_one_input, CmpLogObserver, CtxHook,
-    EDGES_MAP_SIZE_IN_USE,
+    EDGES_MAP_DEFAULT_SIZE,
 };
 #[cfg(unix)]
 use nix::unistd::dup;
@@ -252,7 +252,7 @@ fn fuzz(
     let edges_observer = HitcountsMapObserver::new(unsafe {
         StdMapObserver::from_mut_slice(
             "edges",
-            OwnedMutSlice::from_raw_parts_mut(edges_map_mut_ptr(), EDGES_MAP_SIZE_IN_USE),
+            OwnedMutSlice::from_raw_parts_mut(edges_map_mut_ptr(), EDGES_MAP_DEFAULT_SIZE),
         )
     })
     .track_indices();

libafl/src/executors/hooks/inprocess.rs

@@ -40,10 +40,7 @@ use crate::{
 
 /// The inmem executor's handlers.
 #[allow(missing_debug_implementations)]
-pub struct InProcessHooks<S>
+pub struct InProcessHooks<S> {
-where
-    S: UsesInput,
-{
     /// On crash C function pointer
     #[cfg(feature = "std")]
     pub crash_handler: *const c_void,

libafl/src/executors/inprocess/inner.rs

@@ -35,12 +35,7 @@ use crate::{
 };
 
 /// The internal state of `GenericInProcessExecutor`.
-pub struct GenericInProcessExecutorInner<HT, OT, S>
+pub struct GenericInProcessExecutorInner<HT, OT, S> {
-where
-    HT: ExecutorHooksTuple<S>,
-    OT: ObserversTuple<S::Input, S>,
-    S: State,
-{
     /// The observers, observing each run
     pub(super) observers: OT,
     // Crash and timeout hah
@@ -50,9 +45,7 @@ where
 
 impl<HT, OT, S> Debug for GenericInProcessExecutorInner<HT, OT, S>
 where
-    HT: ExecutorHooksTuple<S>,
+    OT: Debug,
-    OT: ObserversTuple<S::Input, S> + Debug,
-    S: State,
 {
     fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
         f.debug_struct("GenericInProcessExecutorState")
@@ -63,8 +56,6 @@ where
 
 impl<HT, OT, S> UsesState for GenericInProcessExecutorInner<HT, OT, S>
 where
-    HT: ExecutorHooksTuple<S>,
-    OT: ObserversTuple<S::Input, S>,
     S: State,
 {
     type State = S;
@@ -72,7 +63,6 @@ where
 
 impl<HT, OT, S> HasObservers for GenericInProcessExecutorInner<HT, OT, S>
 where
-    HT: ExecutorHooksTuple<S>,
     OT: ObserversTuple<S::Input, S>,
     S: State,
 {
@@ -92,7 +82,6 @@ where
 impl<HT, OT, S> GenericInProcessExecutorInner<HT, OT, S>
 where
     HT: ExecutorHooksTuple<S>,
-    OT: ObserversTuple<S::Input, S>,
     S: State,
 {
     /// This function marks the boundary between the fuzzer and the target
@@ -156,7 +145,7 @@ impl<HT, OT, S> GenericInProcessExecutorInner<HT, OT, S>
 where
     HT: ExecutorHooksTuple<S>,
     OT: ObserversTuple<S::Input, S>,
-    S: HasExecutions + HasSolutions + HasCorpus + State,
+    S: HasCorpus + HasExecutions + HasSolutions + UsesInput,
 {
     /// Create a new in mem executor with the default timeout (5 sec)
     pub fn generic<E, EM, OF, Z>(
@@ -288,9 +277,7 @@ where
 
 impl<HT, OT, S> HasInProcessHooks<S> for GenericInProcessExecutorInner<HT, OT, S>
 where
-    HT: ExecutorHooksTuple<S>,
+    S: UsesInput,
-    OT: ObserversTuple<S::Input, S>,
-    S: State + HasExecutions + HasSolutions + HasCorpus,
 {
     /// the timeout handler
     #[inline]

libafl/src/executors/inprocess_fork/inner.rs

@@ -35,15 +35,7 @@ use crate::{
 };
 
 /// Inner state of GenericInProcessExecutor-like structures.
-pub struct GenericInProcessForkExecutorInner<HT, OT, S, SP, EM, Z>
+pub struct GenericInProcessForkExecutorInner<HT, OT, S, SP, EM, Z> {
-where
-    OT: ObserversTuple<S::Input, S>,
-    S: UsesInput,
-    SP: ShMemProvider,
-    HT: ExecutorHooksTuple<S>,
-    EM: UsesState<State = S>,
-    Z: UsesState<State = S>,
-{
     pub(super) hooks: (InChildProcessHooks<S>, HT),
     pub(super) shmem_provider: SP,
     pub(super) observers: OT,
@@ -56,12 +48,9 @@ where
 
 impl<HT, OT, S, SP, EM, Z> Debug for GenericInProcessForkExecutorInner<HT, OT, S, SP, EM, Z>
 where
-    OT: ObserversTuple<S::Input, S> + Debug,
+    HT: Debug,
-    S: UsesInput,
+    OT: Debug,
-    SP: ShMemProvider,
+    SP: Debug,
-    HT: ExecutorHooksTuple<S> + Debug,
-    EM: UsesState<State = S>,
-    Z: UsesState<State = S>,
 {
     #[cfg(target_os = "linux")]
     fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
@@ -86,12 +75,7 @@ where
 
 impl<HT, OT, S, SP, EM, Z> UsesState for GenericInProcessForkExecutorInner<HT, OT, S, SP, EM, Z>
 where
-    OT: ObserversTuple<S::Input, S>,
     S: State,
-    SP: ShMemProvider,
-    HT: ExecutorHooksTuple<S>,
-    EM: UsesState<State = S>,
-    Z: UsesState<State = S>,
 {
     type State = S;
 }
@@ -195,9 +179,6 @@ where
     HT: ExecutorHooksTuple<S>,
     S: State,
     OT: ObserversTuple<S::Input, S>,
-    SP: ShMemProvider,
-    EM: EventFirer<State = S> + EventRestarter<State = S>,
-    Z: UsesState<State = S>,
 {
     #[inline]
     /// This function marks the boundary between the fuzzer and the target.
@@ -319,12 +300,8 @@ where
 
 impl<HT, OT, S, SP, EM, Z> HasObservers for GenericInProcessForkExecutorInner<HT, OT, S, SP, EM, Z>
 where
-    HT: ExecutorHooksTuple<S>,
-    S: State,
     OT: ObserversTuple<S::Input, S>,
-    SP: ShMemProvider,
+    S: State,
-    EM: UsesState<State = S>,
-    Z: UsesState<State = S>,
 {
     type Observers = OT;
 

libafl/src/executors/inprocess_fork/stateful.rs

@@ -24,7 +24,7 @@ use crate::{
     fuzzer::HasObjective,
     inputs::UsesInput,
     observers::ObserversTuple,
-    state::{HasExecutions, HasSolutions, State, UsesState},
+    state::{HasExecutions, State, UsesState},
     Error,
 };
 
@@ -32,15 +32,11 @@ use crate::{
 pub type StatefulInProcessForkExecutor<'a, H, OT, S, SP, ES, EM, Z> =
     StatefulGenericInProcessForkExecutor<'a, H, (), OT, S, SP, ES, EM, Z>;
 
-impl<'a, H, OT, S, SP, ES, EM, Z, OF> StatefulInProcessForkExecutor<'a, H, OT, S, SP, ES, EM, Z>
+impl<'a, H, OT, S, SP, ES, EM, Z> StatefulInProcessForkExecutor<'a, H, OT, S, SP, ES, EM, Z>
 where
-    H: FnMut(&S::Input, &mut ES) -> ExitKind + ?Sized,
+    H: FnMut(&mut ES, &S::Input) -> ExitKind + ?Sized,
     OT: ObserversTuple<S::Input, S>,
-    SP: ShMemProvider,
+    S: State,
-    EM: EventFirer<State = S> + EventRestarter<State = S>,
-    OF: Feedback<EM, S::Input, OT, S>,
-    S: State + HasSolutions,
-    Z: HasObjective<Objective = OF, State = S>,
 {
     #[allow(clippy::too_many_arguments)]
     /// The constructor for `InProcessForkExecutor`
@@ -71,30 +67,26 @@ where
 /// [`StatefulGenericInProcessForkExecutor`] is an executor that forks the current process before each execution. Harness can access some internal state.
 pub struct StatefulGenericInProcessForkExecutor<'a, H, HT, OT, S, SP, ES, EM, Z>
 where
-    H: FnMut(&S::Input, &mut ES) -> ExitKind + ?Sized,
+    H: FnMut(&mut ES, &S::Input) -> ExitKind + ?Sized,
-    OT: ObserversTuple<S::Input, S>,
     S: UsesInput,
-    SP: ShMemProvider,
-    HT: ExecutorHooksTuple<S>,
-    EM: UsesState<State = S>,
-    Z: UsesState<State = S>,
 {
+    /// The harness function, being executed for each fuzzing loop execution
     harness_fn: &'a mut H,
-    exposed_executor_state: ES,
+    /// The state used as argument of the harness
-    inner: GenericInProcessForkExecutorInner<HT, OT, S, SP, EM, Z>,
+    pub exposed_executor_state: ES,
+    /// Inner state of the executor
+    pub inner: GenericInProcessForkExecutorInner<HT, OT, S, SP, EM, Z>,
     phantom: PhantomData<ES>,
 }
 
 impl<H, HT, OT, S, SP, ES, EM, Z> Debug
     for StatefulGenericInProcessForkExecutor<'_, H, HT, OT, S, SP, ES, EM, Z>
 where
-    H: FnMut(&S::Input, &mut ES) -> ExitKind + ?Sized,
+    H: FnMut(&mut ES, &S::Input) -> ExitKind + ?Sized,
-    OT: ObserversTuple<S::Input, S> + Debug,
+    HT: Debug,
+    OT: Debug,
     S: UsesInput,
-    SP: ShMemProvider,
+    SP: Debug,
-    HT: ExecutorHooksTuple<S> + Debug,
-    EM: UsesState<State = S>,
-    Z: UsesState<State = S>,
 {
     #[cfg(target_os = "linux")]
     fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
@@ -116,13 +108,8 @@ where
 impl<H, HT, OT, S, SP, ES, EM, Z> UsesState
     for StatefulGenericInProcessForkExecutor<'_, H, HT, OT, S, SP, ES, EM, Z>
 where
-    H: FnMut(&S::Input, &mut ES) -> ExitKind + ?Sized,
+    H: FnMut(&mut ES, &S::Input) -> ExitKind + ?Sized,
-    OT: ObserversTuple<S::Input, S>,
     S: State,
-    SP: ShMemProvider,
-    HT: ExecutorHooksTuple<S>,
-    EM: UsesState<State = S>,
-    Z: UsesState<State = S>,
 {
     type State = S;
 }
@@ -130,14 +117,14 @@ where
 impl<EM, H, HT, OT, S, SP, Z, ES, OF> Executor<EM, Z>
     for StatefulGenericInProcessForkExecutor<'_, H, HT, OT, S, SP, ES, EM, Z>
 where
-    H: FnMut(&S::Input, &mut ES) -> ExitKind + ?Sized,
+    EM: EventFirer<State = S> + EventRestarter<State = S>,
+    H: FnMut(&mut ES, &S::Input) -> ExitKind + ?Sized,
+    HT: ExecutorHooksTuple<S>,
+    OF: Feedback<EM, S::Input, OT, S>,
     OT: ObserversTuple<S::Input, S> + Debug,
     S: State + HasExecutions,
     SP: ShMemProvider,
-    HT: ExecutorHooksTuple<S>,
-    EM: EventFirer<State = S> + EventRestarter<State = S>,
     Z: HasObjective<Objective = OF, State = S>,
-    OF: Feedback<EM, S::Input, OT, S>,
 {
     #[allow(unreachable_code)]
     #[inline]
@@ -156,7 +143,7 @@ where
                 Ok(ForkResult::Child) => {
                     // Child
                     self.inner.pre_run_target_child(fuzzer, state, mgr, input)?;
-                    (self.harness_fn)(input, &mut self.exposed_executor_state);
+                    (self.harness_fn)(&mut self.exposed_executor_state, input);
                     self.inner.post_run_target_child(fuzzer, state, mgr, input);
                     Ok(ExitKind::Ok)
                 }
@@ -170,18 +157,13 @@ where
     }
 }
 
-impl<'a, H, HT, OT, S, SP, ES, EM, Z, OF>
+impl<'a, H, HT, OT, S, SP, ES, EM, Z>
     StatefulGenericInProcessForkExecutor<'a, H, HT, OT, S, SP, ES, EM, Z>
 where
-    H: FnMut(&S::Input, &mut ES) -> ExitKind + ?Sized,
+    H: FnMut(&mut ES, &S::Input) -> ExitKind + ?Sized,
     HT: ExecutorHooksTuple<S>,
     OT: ObserversTuple<S::Input, S>,
-    SP: ShMemProvider,
+    S: State,
-    Z: UsesState<State = S>,
-    EM: EventFirer<State = S> + EventRestarter<State = S>,
-    OF: Feedback<EM, S::Input, OT, S>,
-    S: State + HasSolutions,
-    Z: HasObjective<Objective = OF, State = S>,
 {
     /// Creates a new [`StatefulGenericInProcessForkExecutor`] with custom hooks
     #[allow(clippy::too_many_arguments)]
@@ -228,15 +210,12 @@ where
 impl<H, HT, OT, S, SP, ES, EM, Z> HasObservers
     for StatefulGenericInProcessForkExecutor<'_, H, HT, OT, S, SP, ES, EM, Z>
 where
-    H: FnMut(&S::Input, &mut ES) -> ExitKind + ?Sized,
+    H: FnMut(&mut ES, &S::Input) -> ExitKind + ?Sized,
-    HT: ExecutorHooksTuple<S>,
-    S: State,
     OT: ObserversTuple<S::Input, S>,
-    SP: ShMemProvider,
+    S: State,
-    EM: UsesState<State = S>,
-    Z: UsesState<State = S>,
 {
     type Observers = OT;
+
     #[inline]
     fn observers(&self) -> RefIndexable<&Self::Observers, Self::Observers> {
         self.inner.observers()

libafl/src/observers/map/const_map.rs

@@ -12,10 +12,12 @@ use libafl_bolts::{ownedref::OwnedMutSlice, AsSlice, AsSliceMut, HasLen, Named};
 use serde::{de::DeserializeOwned, Deserialize, Serialize};
 
 use crate::{
-    observers::{map::MapObserver, Observer},
+    observers::{map::MapObserver, Observer, VariableLengthMapObserver},
     Error,
 };
 
+// TODO: remove the size field and implement ConstantLengthMapObserver
+
 /// Use a const size to speedup `Feedback::is_interesting` when the user can
 /// know the size of the map at compile time.
 #[derive(Serialize, Deserialize, Debug)]
@@ -24,6 +26,7 @@ pub struct ConstMapObserver<'a, T, const N: usize> {
     map: OwnedMutSlice<'a, T>,
     initial: T,
     name: Cow<'static, str>,
+    size: usize,
 }
 
 impl<I, S, T, const N: usize> Observer<I, S> for ConstMapObserver<'_, T, N>
@@ -147,6 +150,27 @@ where
     }
 }
 
+impl<T, const N: usize> VariableLengthMapObserver for ConstMapObserver<'_, T, N>
+where
+    T: PartialEq + Copy + Hash + Serialize + DeserializeOwned + Debug + 'static,
+{
+    fn map_slice(&mut self) -> &[Self::Entry] {
+        self.map.as_slice()
+    }
+
+    fn map_slice_mut(&mut self) -> &mut [Self::Entry] {
+        self.map.as_slice_mut()
+    }
+
+    fn size(&mut self) -> &usize {
+        &N
+    }
+
+    fn size_mut(&mut self) -> &mut usize {
+        &mut self.size
+    }
+}
+
 impl<T, const N: usize> Deref for ConstMapObserver<'_, T, N> {
     type Target = [T];
     fn deref(&self) -> &[T] {
@@ -176,6 +200,7 @@ where
             map: OwnedMutSlice::from(map),
             name: Cow::from(name),
             initial: T::default(),
+            size: N,
         }
     }
 
@@ -188,6 +213,7 @@ where
             map: OwnedMutSlice::from_raw_parts_mut(map_ptr, N),
             name: Cow::from(name),
             initial: T::default(),
+            size: N,
         }
     }
 }
@@ -209,6 +235,7 @@ where
             map: OwnedMutSlice::from(map),
             name: Cow::from(name),
             initial,
+            size: N,
         }
     }
 }

libafl/src/observers/map/hitcount_map.rs

@@ -14,7 +14,7 @@ use serde::{Deserialize, Serialize};
 
 use crate::{
     executors::ExitKind,
-    observers::{map::MapObserver, DifferentialObserver, Observer},
+    observers::{map::MapObserver, DifferentialObserver, Observer, VariableLengthMapObserver},
     Error,
 };
 
@@ -220,6 +220,7 @@ where
     fn hash_simple(&self) -> u64 {
         self.base.hash_simple()
     }
+
     fn to_vec(&self) -> Vec<u8> {
         self.base.to_vec()
     }
@@ -229,6 +230,27 @@ where
     }
 }
 
+impl<M> VariableLengthMapObserver for HitcountsMapObserver<M>
+where
+    M: VariableLengthMapObserver + MapObserver<Entry = u8>,
+{
+    fn map_slice(&mut self) -> &[Self::Entry] {
+        self.base.map_slice()
+    }
+
+    fn map_slice_mut(&mut self) -> &mut [Self::Entry] {
+        self.base.map_slice_mut()
+    }
+
+    fn size(&mut self) -> &usize {
+        self.base.size()
+    }
+
+    fn size_mut(&mut self) -> &mut usize {
+        self.base.size_mut()
+    }
+}
+
 impl<M> Truncate for HitcountsMapObserver<M>
 where
     M: Named + Serialize + serde::de::DeserializeOwned + Truncate,

libafl/src/observers/map/mod.rs

@@ -385,6 +385,33 @@ pub trait MapObserver:
     fn how_many_set(&self, indexes: &[usize]) -> usize;
 }
 
+/// The "real" length of the underlying map could change at any point in time.
+/// Thus, the size of the map should be fetched each time it is used.
+pub trait VariableLengthMapObserver: MapObserver {
+    /// A mutable slice reference to the map.
+    /// The length of the map gives the maximum allocatable size.
+    fn map_slice(&mut self) -> &[Self::Entry];
+
+    /// A slice reference to the map.
+    /// The length of the map gives the maximum allocatable size.
+    fn map_slice_mut(&mut self) -> &mut [Self::Entry];
+
+    /// A reference to the size of the map.
+    fn size(&mut self) -> &usize;
+
+    /// A mutable reference to the size of the map.
+    fn size_mut(&mut self) -> &mut usize;
+}
+
+/// Implementors guarantee the size of the map is constant at any point in time and equals N.
+pub trait ConstantLengthMapObserver<const N: usize>: MapObserver {
+    /// The size of the map
+    const LENGTH: usize = N;
+
+    /// A mutable slice reference to the map
+    fn map_slice_mut(&mut self) -> &mut [Self::Entry; N];
+}
+
 impl<M> CanTrack for M
 where
     M: MapObserver,

libafl/src/observers/map/variable_map.rs

@@ -15,7 +15,7 @@ use libafl_bolts::{
 use serde::{de::DeserializeOwned, Deserialize, Serialize};
 
 use crate::{
-    observers::{map::MapObserver, Observer},
+    observers::{map::MapObserver, Observer, VariableLengthMapObserver},
     Error,
 };
 
@@ -149,6 +149,27 @@ where
     }
 }
 
+impl<T> VariableLengthMapObserver for VariableMapObserver<'_, T>
+where
+    T: PartialEq + Copy + Hash + Serialize + DeserializeOwned + Debug,
+{
+    fn map_slice(&mut self) -> &[Self::Entry] {
+        self.map.as_ref()
+    }
+
+    fn map_slice_mut(&mut self) -> &mut [Self::Entry] {
+        self.map.as_mut()
+    }
+
+    fn size(&mut self) -> &usize {
+        self.size.as_ref()
+    }
+
+    fn size_mut(&mut self) -> &mut usize {
+        self.size.as_mut()
+    }
+}
+
 impl<T> Deref for VariableMapObserver<'_, T> {
     type Target = [T];
     fn deref(&self) -> &[T] {

libafl_bolts/src/ownedref.rs

@@ -905,6 +905,24 @@ impl<T: Sized> OwnedMutPtr<T> {
     pub unsafe fn from_raw_mut(ptr: *mut T) -> Self {
         Self::Ptr(ptr)
     }
+
+    /// Get a pointer to the inner object
+    #[must_use]
+    pub fn as_ptr(&self) -> *const T {
+        match self {
+            OwnedMutPtr::Ptr(ptr) => *ptr,
+            OwnedMutPtr::Owned(owned) => &**owned,
+        }
+    }
+
+    /// Get a mutable pointer to the inner object
+    #[must_use]
+    pub fn as_mut_ptr(&mut self) -> *mut T {
+        match self {
+            OwnedMutPtr::Ptr(ptr) => *ptr,
+            OwnedMutPtr::Owned(owned) => &mut **owned,
+        }
+    }
 }
 
 impl<T: Sized + Serialize> Serialize for OwnedMutPtr<T> {

libafl_cc/build.rs

@@ -239,7 +239,7 @@ fn main() {
     println!("cargo:rerun-if-env-changed=LLVM_CXXFLAGS");
     println!("cargo:rerun-if-env-changed=LLVM_LDFLAGS");
     println!("cargo:rerun-if-env-changed=LLVM_VERSION");
-    println!("cargo:rerun-if-env-changed=LIBAFL_EDGES_MAP_SIZE_IN_USE");
+    println!("cargo:rerun-if-env-changed=LIBAFL_EDGES_MAP_DEFAULT_SIZE");
     println!("cargo:rerun-if-env-changed=LIBAFL_ACCOUNTING_MAP_SIZE");
     println!("cargo:rerun-if-env-changed=LIBAFL_DDG_MAP_SIZE");
     println!("cargo:rerun-if-changed=src/common-llvm.h");
@@ -312,13 +312,13 @@ pub const LIBAFL_CC_LLVM_VERSION: Option<usize> = None;
     };
     let mut cxxflags: Vec<String> = cxxflags.split_whitespace().map(String::from).collect();
 
-    let edges_map_size_in_use: usize = option_env!("LIBAFL_EDGES_MAP_SIZE_IN_USE")
+    let edge_map_default_size: usize = option_env!("LIBAFL_EDGES_MAP_DEFAULT_SIZE")
         .map_or(Ok(65_536), str::parse)
-        .expect("Could not parse LIBAFL_EDGES_MAP_SIZE_IN_USE");
+        .expect("Could not parse LIBAFL_EDGES_MAP_DEFAULT_SIZE");
-    let edges_map_size_max: usize = option_env!("LIBAFL_EDGES_MAP_SIZE_MAX")
+    let edge_map_allocated_size: usize = option_env!("LIBAFL_EDGES_MAP_ALLOCATED_SIZE")
         .map_or(Ok(2_621_440), str::parse)
-        .expect("Could not parse LIBAFL_EDGES_MAP_SIZE_IN_USE");
+        .expect("Could not parse LIBAFL_EDGES_MAP_DEFAULT_SIZE");
-    cxxflags.push(format!("-DEDGES_MAP_SIZE_IN_USE={edges_map_size_in_use}"));
+    cxxflags.push(format!("-DEDGES_MAP_DEFAULT_SIZE={edge_map_default_size}"));
 
     let acc_map_size: usize = option_env!("LIBAFL_ACCOUNTING_MAP_SIZE")
         .map_or(Ok(65_536), str::parse)
@@ -348,9 +348,9 @@ pub const LIBAFL_CC_LLVM_VERSION: Option<usize> = None;
         pub const CLANGXX_PATH: &str = {clangcpp:?};
 
         /// The default size of the edges map the fuzzer uses
-        pub const EDGES_MAP_SIZE_IN_USE: usize = {edges_map_size_in_use};
+        pub const EDGES_MAP_DEFAULT_SIZE: usize = {edge_map_default_size};
         /// The real allocated size of the edges map
-        pub const EDGES_MAP_SIZE_MAX: usize = {edges_map_size_max};
+        pub const EDGES_MAP_ALLOCATED_SIZE: usize = {edge_map_allocated_size};
 
         /// The size of the accounting maps
         pub const ACCOUNTING_MAP_SIZE: usize = {acc_map_size};

libafl_cc/src/cfg.rs

@@ -95,9 +95,9 @@ where
     /// Inserts an edge into CFG.
     #[must_use]
     pub fn new() -> Self {
-        let map_size = option_env!("LIBAFL_EDGES_MAP_SIZE_IN_USE")
+        let map_size = option_env!("LIBAFL_EDGES_MAP_DEFAULT_SIZE")
             .map_or(Ok(65536), str::parse)
-            .expect("Could not parse LIBAFL_EDGES_MAP_SIZE_IN_USE");
+            .expect("Could not parse LIBAFL_EDGES_MAP_DEFAULT_SIZE");
         Self {
             edges: (0..map_size).map(|_| None).collect(),
             func_to_entry_bb: HashMap::default(),

libafl_cc/src/ctx-pass.cc

@@ -64,7 +64,7 @@
 
 using namespace llvm;
 
-#define MAP_SIZE EDGES_MAP_SIZE_IN_USE
+#define MAP_SIZE EDGES_MAP_DEFAULT_SIZE
 
 namespace {
 

libafl_cc/src/function-logging.cc

@@ -64,7 +64,7 @@
 
 using namespace llvm;
 
-#define MAP_SIZE EDGES_MAP_SIZE_IN_USE
+#define MAP_SIZE EDGES_MAP_DEFAULT_SIZE
 
 namespace {
 

libafl_qemu/libafl_qemu_build/src/bindings.rs

@@ -133,6 +133,11 @@ pub fn generate(
         })
         .header(wrapper_h.display().to_string())
         .clang_args(clang_args)
+        .allowlist_var("libafl_dump_core_hook")
+        .allowlist_var("libafl_force_dfl")
+        .allowlist_var("mmap_next_start")
+        .allowlist_var("guest_base")
+        .allowlist_var("exec_path")
         .allowlist_type("target_ulong")
         .allowlist_type("target_long")
         .allowlist_type("CPUState")

libafl_qemu/libafl_qemu_sys/src/usermode.rs

@@ -2,21 +2,11 @@ use core::{slice::from_raw_parts, str::from_utf8_unchecked};
 
 use libc::{c_char, strlen};
 use num_enum::{IntoPrimitive, TryFromPrimitive};
-use paste::paste;
 #[cfg(feature = "python")]
 use pyo3::{pyclass, pymethods, IntoPy, PyObject, Python};
 use strum_macros::EnumIter;
 
-use crate::{extern_c_checked, libafl_mapinfo, GuestAddr, MmapPerms};
+use crate::{libafl_mapinfo, GuestAddr, MmapPerms};
-
-extern_c_checked! {
-    pub static exec_path: *const u8;
-    pub static guest_base: usize;
-    pub static mut mmap_next_start: GuestAddr;
-
-    pub static mut libafl_dump_core_hook: unsafe extern "C" fn(i32);
-    pub static mut libafl_force_dfl: i32;
-}
 
 #[derive(IntoPrimitive, TryFromPrimitive, Debug, Clone, Copy, EnumIter, PartialEq, Eq)]
 #[repr(i32)]

libafl_qemu/libafl_qemu_sys/src/x86_64_stub_bindings.rs

@@ -12525,6 +12525,9 @@ impl Default for IntervalTreeNode {
 pub type IntervalTreeRoot = RBRootLeftCached;
 pub type abi_ulong = target_ulong;
 pub type abi_long = target_long;
+extern "C" {
+    pub static mut guest_base: usize;
+}
 extern "C" {
     #[doc = " --- Begin LibAFL code ---"]
     pub fn pageflags_get_root() -> *mut IntervalTreeRoot;
@@ -13274,6 +13277,12 @@ impl Default for TranslationBlock {
         }
     }
 }
+extern "C" {
+    pub static mut exec_path: *mut ::std::os::raw::c_char;
+}
+extern "C" {
+    pub static mut mmap_next_start: abi_ulong;
+}
 extern "C" {
     pub fn target_mprotect(
         start: abi_ulong,
@@ -13757,6 +13766,13 @@ impl Default for libafl_mapinfo {
         }
     }
 }
+extern "C" {
+    pub static mut libafl_dump_core_hook:
+        ::std::option::Option<unsafe extern "C" fn(host_sig: ::std::os::raw::c_int)>;
+}
+extern "C" {
+    pub static mut libafl_force_dfl: ::std::os::raw::c_int;
+}
 extern "C" {
     pub fn libafl_dump_core_exec(signal: ::std::os::raw::c_int);
 }

libafl_qemu/src/emu/hooks.rs

@@ -15,8 +15,8 @@ use crate::qemu::{
 };
 #[cfg(emulation_mode = "usermode")]
 use crate::qemu::{
-    CrashHookClosure, PostSyscallHookClosure, PostSyscallHookFn, PreSyscallHookClosure,
+    CrashHookClosure, CrashHookFn, PostSyscallHookClosure, PostSyscallHookFn,
-    PreSyscallHookFn,
+    PreSyscallHookClosure, PreSyscallHookFn,
 };
 use crate::{
     cpu_run_post_exec_hook_wrapper, cpu_run_pre_exec_hook_wrapper,
@@ -68,9 +68,6 @@ macro_rules! hook_to_repr {
 
 static mut EMULATOR_TOOLS: *mut () = ptr::null_mut();
 
-#[cfg(emulation_mode = "usermode")]
-static mut CRASH_HOOKS: Vec<HookRepr> = vec![];
-
 #[cfg(emulation_mode = "usermode")]
 pub extern "C" fn crash_hook_wrapper<ET, S>(target_sig: i32)
 where
@@ -78,17 +75,17 @@ where
     S: Unpin + UsesInput,
 {
     unsafe {
-        let hooks = Qemu::get().unwrap().hooks();
+        let emulator_modules = EmulatorModules::<ET, S>::emulator_modules_mut().unwrap();
 
-        for crash_hook in &mut (*addr_of_mut!(CRASH_HOOKS)) {
+        for crash_hook in &mut (*addr_of_mut!(emulator_modules.hooks.crash_hooks)) {
             match crash_hook {
                 HookRepr::Function(ptr) => {
-                    let func: fn(QemuHooks, i32) = transmute(*ptr);
+                    let func: CrashHookFn<ET, S> = transmute(*ptr);
-                    func(hooks, target_sig);
+                    func(emulator_modules, target_sig);
                 }
                 HookRepr::Closure(ptr) => {
-                    let func: &mut Box<dyn FnMut(QemuHooks, i32)> = transmute(ptr);
+                    let func: &mut CrashHookClosure<ET, S> = transmute(ptr);
-                    func(hooks, target_sig);
+                    func(emulator_modules, target_sig);
                 }
                 HookRepr::Empty => (),
             }

libafl_qemu/src/executor.rs

@@ -15,6 +15,7 @@ use libafl::{
     executors::{
         hooks::inprocess::InProcessExecutorHandlerData,
         inprocess::{stateful::StatefulInProcessExecutor, HasInProcessHooks},
+        inprocess_fork::stateful::StatefulInProcessForkExecutor,
         Executor, ExitKind, HasObservers,
     },
     feedbacks::Feedback,
@@ -25,10 +26,6 @@ use libafl::{
     Error, ExecutionProcessor, HasScheduler,
 };
 #[cfg(feature = "fork")]
-use libafl::{
-    events::EventManager, executors::InProcessForkExecutor, state::HasLastReportTime, HasMetadata,
-};
-#[cfg(feature = "fork")]
 use libafl_bolts::shmem::ShMemProvider;
 use libafl_bolts::{
     os::unix_signals::{ucontext_t, Signal},
@@ -278,20 +275,21 @@ where
     }
 }
 
+pub type QemuInProcessForkExecutor<'a, CM, ED, EM, ET, H, OT, S, SM, SP, Z> =
+    StatefulInProcessForkExecutor<'a, H, OT, S, SP, Emulator<CM, ED, ET, S, SM>, EM, Z>;
+
 #[cfg(feature = "fork")]
 pub struct QemuForkExecutor<'a, CM, ED, EM, ET, H, OT, S, SM, SP, Z>
 where
     CM: CommandManager<ED, ET, S, SM>,
-    EM: UsesState<State = S>,
     ET: EmulatorModuleTuple<S>,
-    H: FnMut(&S::Input) -> ExitKind + ?Sized,
+    H: FnMut(&mut Emulator<CM, ED, ET, S, SM>, &S::Input) -> ExitKind + ?Sized,
     OT: ObserversTuple<S::Input, S>,
     S: UsesInput,
     SP: ShMemProvider,
     Z: UsesState<State = S>,
 {
-    inner: InProcessForkExecutor<'a, H, OT, S, SP, EM, Z>,
+    inner: QemuInProcessForkExecutor<'a, CM, ED, EM, ET, H, OT, S, SM, SP, Z>,
-    emulator: Emulator<CM, ED, ET, S, SM>,
 }
 
 #[cfg(feature = "fork")]
@@ -302,7 +300,7 @@ where
     EM: UsesState<State = S>,
     ED: Debug,
     ET: EmulatorModuleTuple<S> + Debug,
-    H: FnMut(&S::Input) -> ExitKind + ?Sized,
+    H: FnMut(&mut Emulator<CM, ED, ET, S, SM>, &S::Input) -> ExitKind + ?Sized,
     OT: ObserversTuple<S::Input, S> + Debug,
     S: UsesInput + Debug,
     SM: Debug,
@@ -312,7 +310,7 @@ where
     fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
         f.debug_struct("QemuForkExecutor")
             .field("inner", &self.inner)
-            .field("emulator", &self.emulator)
+            .field("emulator", &self.inner.exposed_executor_state)
             .finish()
     }
 }
@@ -324,7 +322,7 @@ where
     CM: CommandManager<ED, ET, S, SM>,
     EM: EventFirer<State = S> + EventRestarter<State = S>,
     ET: EmulatorModuleTuple<S>,
-    H: FnMut(&S::Input) -> ExitKind + ?Sized,
+    H: FnMut(&mut Emulator<CM, ED, ET, S, SM>, &S::Input) -> ExitKind + ?Sized,
     OT: ObserversTuple<S::Input, S>,
     S: State + HasSolutions,
     SP: ShMemProvider,
@@ -344,8 +342,9 @@ where
         assert!(!ET::HOOKS_DO_SIDE_EFFECTS, "When using QemuForkExecutor, the hooks must not do any side effect as they will happen in the child process and then discarded");
 
         Ok(Self {
-            inner: InProcessForkExecutor::new(
+            inner: StatefulInProcessForkExecutor::new(
                 harness_fn,
+                emulator,
                 observers,
                 fuzzer,
                 state,
@@ -353,39 +352,41 @@ where
                 timeout,
                 shmem_provider,
             )?,
-            emulator,
         })
     }
 
-    pub fn inner(&self) -> &InProcessForkExecutor<'a, H, OT, S, SP, EM, Z> {
+    pub fn inner(&self) -> &QemuInProcessForkExecutor<'a, CM, ED, EM, ET, H, OT, S, SM, SP, Z> {
         &self.inner
     }
 
-    pub fn inner_mut(&mut self) -> &mut InProcessForkExecutor<'a, H, OT, S, SP, EM, Z> {
+    pub fn inner_mut(
+        &mut self,
+    ) -> &mut QemuInProcessForkExecutor<'a, CM, ED, EM, ET, H, OT, S, SM, SP, Z> {
         &mut self.inner
     }
 
     pub fn emulator(&self) -> &Emulator<CM, ED, ET, S, SM> {
-        &self.emulator
+        &self.inner.exposed_executor_state
     }
 
     pub fn emulator_mut(&mut self) -> &Emulator<CM, ED, ET, S, SM> {
-        &mut self.emulator
+        &mut self.inner.exposed_executor_state
     }
 }
 
 #[cfg(feature = "fork")]
-impl<'a, CM, ED, EM, ET, H, OF, OT, S, SM, SP, Z> Executor<EM, Z>
+impl<CM, ED, EM, ET, H, OF, OT, S, SM, SP, Z> Executor<EM, Z>
-    for QemuForkExecutor<'a, CM, ED, EM, ET, H, OT, S, SM, SP, Z>
+    for QemuForkExecutor<'_, CM, ED, EM, ET, H, OT, S, SM, SP, Z>
 where
     CM: CommandManager<ED, ET, S, SM>,
-    EM: EventManager<InProcessForkExecutor<'a, H, OT, S, SP, EM, Z>, Z, State = S>,
+    ED: EmulatorDriver<CM, ET, S, SM>,
-    H: FnMut(&S::Input) -> ExitKind,
+    EM: EventFirer<State = S> + EventRestarter<State = S>,
-    S: Unpin + State + HasMetadata + HasExecutions + HasLastReportTime + HasCorpus + HasSolutions,
-    OT: ObserversTuple<S::Input, S> + Debug,
     ET: EmulatorModuleTuple<S>,
-    SP: ShMemProvider,
+    H: FnMut(&mut Emulator<CM, ED, ET, S, SM>, &S::Input) -> ExitKind,
     OF: Feedback<EM, S::Input, OT, S>,
+    OT: ObserversTuple<S::Input, S> + Debug,
+    S: State + HasExecutions + Unpin,
+    SP: ShMemProvider,
     Z: HasObjective<Objective = OF, State = S>,
 {
     fn run_target(
@@ -395,7 +396,20 @@ where
         mgr: &mut EM,
         input: &Self::Input,
     ) -> Result<ExitKind, Error> {
-        self.inner.run_target(fuzzer, state, mgr, input)
+        self.inner.exposed_executor_state.first_exec(state);
+
+        self.inner.exposed_executor_state.pre_exec(state, input);
+
+        let mut exit_kind = self.inner.run_target(fuzzer, state, mgr, input)?;
+
+        self.inner.exposed_executor_state.post_exec(
+            input,
+            &mut *self.inner.inner.observers_mut(),
+            state,
+            &mut exit_kind,
+        );
+
+        Ok(exit_kind)
     }
 }
 
@@ -404,9 +418,8 @@ impl<CM, ED, EM, ET, H, OT, S, SM, SP, Z> UsesState
     for QemuForkExecutor<'_, CM, ED, EM, ET, H, OT, S, SM, SP, Z>
 where
     CM: CommandManager<ED, ET, S, SM>,
-    EM: UsesState<State = S>,
     ET: EmulatorModuleTuple<S>,
-    H: FnMut(&S::Input) -> ExitKind + ?Sized,
+    H: FnMut(&mut Emulator<CM, ED, ET, S, SM>, &S::Input) -> ExitKind + ?Sized,
     OT: ObserversTuple<S::Input, S>,
     S: State,
     SP: ShMemProvider,
@@ -422,7 +435,7 @@ where
     CM: CommandManager<ED, ET, S, SM>,
     EM: UsesState<State = S>,
     ET: EmulatorModuleTuple<S>,
-    H: FnMut(&S::Input) -> ExitKind + ?Sized,
+    H: FnMut(&mut Emulator<CM, ED, ET, S, SM>, &S::Input) -> ExitKind + ?Sized,
     OT: ObserversTuple<S::Input, S>,
     S: State,
     SP: ShMemProvider,

libafl_qemu/src/modules/edges.rs

@@ -1,14 +1,12 @@
-use std::{cell::UnsafeCell, cmp::max, fmt::Debug};
+use std::{cell::UnsafeCell, cmp::max, fmt::Debug, ptr, ptr::addr_of};
 
 use hashbrown::{hash_map::Entry, HashMap};
-use libafl::{inputs::UsesInput, HasMetadata};
+use libafl::{inputs::UsesInput, observers::VariableLengthMapObserver, HasMetadata};
+use libafl_bolts::Error;
 use libafl_qemu_sys::GuestAddr;
 #[cfg(emulation_mode = "systemmode")]
 use libafl_qemu_sys::GuestPhysAddr;
-pub use libafl_targets::{
+use libafl_targets::EDGES_MAP;
-    edges_map_mut_ptr, EDGES_MAP, EDGES_MAP_PTR, EDGES_MAP_SIZE_IN_USE, EDGES_MAP_SIZE_MAX,
-    MAX_EDGES_FOUND,
-};
 use serde::{Deserialize, Serialize};
 
 use crate::{
@@ -20,6 +18,18 @@ use crate::{
     qemu::Hook,
 };
 
+#[no_mangle]
+static mut LIBAFL_QEMU_EDGES_MAP_PTR: *mut u8 = ptr::null_mut();
+
+#[no_mangle]
+static mut LIBAFL_QEMU_EDGES_MAP_SIZE_PTR: *mut usize = ptr::null_mut();
+
+#[no_mangle]
+static mut LIBAFL_QEMU_EDGES_MAP_ALLOCATED_SIZE: usize = 0;
+
+#[no_mangle]
+static mut LIBAFL_QEMU_EDGES_MAP_MASK_MAX: usize = 0;
+
 #[cfg_attr(
     any(not(feature = "serdeany_autoreg"), miri),
     allow(clippy::unsafe_derive_deserialize)
@@ -100,7 +110,7 @@ pub struct EdgeCoverageFullVariant;
 pub type StdEdgeCoverageFullModule =
     EdgeCoverageModule<StdAddressFilter, StdPageFilter, EdgeCoverageFullVariant>;
 pub type StdEdgeCoverageFullModuleBuilder =
-    EdgeCoverageModuleBuilder<StdAddressFilter, StdPageFilter, EdgeCoverageFullVariant>;
+    EdgeCoverageModuleBuilder<StdAddressFilter, StdPageFilter, EdgeCoverageFullVariant, false>;
 
 impl<AF, PF> EdgeCoverageVariant<AF, PF> for EdgeCoverageFullVariant {
     fn jit_hitcount<ET, S>(&mut self, emulator_modules: &mut EmulatorModules<ET, S>)
@@ -193,7 +203,7 @@ pub struct EdgeCoverageClassicVariant;
 pub type StdEdgeCoverageClassicModule =
     EdgeCoverageModule<StdAddressFilter, StdPageFilter, EdgeCoverageClassicVariant>;
 pub type StdEdgeCoverageClassicModuleBuilder =
-    EdgeCoverageModuleBuilder<StdAddressFilter, StdPageFilter, EdgeCoverageClassicVariant>;
+    EdgeCoverageModuleBuilder<StdAddressFilter, StdPageFilter, EdgeCoverageClassicVariant, false>;
 
 impl<AF, PF> EdgeCoverageVariant<AF, PF> for EdgeCoverageClassicVariant {
     const DO_SIDE_EFFECTS: bool = false;
@@ -293,7 +303,7 @@ pub struct EdgeCoverageChildVariant;
 pub type StdEdgeCoverageChildModule =
     EdgeCoverageModule<StdAddressFilter, StdPageFilter, EdgeCoverageChildVariant>;
 pub type StdEdgeCoverageChildModuleBuilder =
-    EdgeCoverageModuleBuilder<StdAddressFilter, StdPageFilter, EdgeCoverageChildVariant>;
+    EdgeCoverageModuleBuilder<StdAddressFilter, StdPageFilter, EdgeCoverageChildVariant, false>;
 
 impl<AF, PF> EdgeCoverageVariant<AF, PF> for EdgeCoverageChildVariant {
     const DO_SIDE_EFFECTS: bool = false;
@@ -339,13 +349,13 @@ impl Default for StdEdgeCoverageChildModuleBuilder {
 
 impl StdEdgeCoverageChildModule {
     #[must_use]
-    pub fn builder() -> StdEdgeCoverageClassicModuleBuilder {
+    pub fn builder() -> StdEdgeCoverageChildModuleBuilder {
-        EdgeCoverageModuleBuilder::default()
+        EdgeCoverageModuleBuilder::default().jit(false)
     }
 }
 
 #[derive(Debug)]
-pub struct EdgeCoverageModuleBuilder<AF, PF, V> {
+pub struct EdgeCoverageModuleBuilder<AF, PF, V, const IS_INITIALIZED: bool> {
     variant: V,
     address_filter: AF,
     page_filter: PF,
@@ -364,8 +374,20 @@ pub struct EdgeCoverageModule<AF, PF, V> {
     use_jit: bool,
 }
 
-impl<AF, PF, V> EdgeCoverageModuleBuilder<AF, PF, V> {
+impl<AF, PF, V> EdgeCoverageModuleBuilder<AF, PF, V, true> {
-    pub fn new(
+    pub fn build(self) -> Result<EdgeCoverageModule<AF, PF, V>, Error> {
+        Ok(EdgeCoverageModule::new(
+            self.address_filter,
+            self.page_filter,
+            self.variant,
+            self.use_hitcounts,
+            self.use_jit,
+        ))
+    }
+}
+
+impl<AF, PF, V, const IS_INITIALIZED: bool> EdgeCoverageModuleBuilder<AF, PF, V, IS_INITIALIZED> {
+    fn new(
         variant: V,
         address_filter: AF,
         page_filter: PF,
@@ -381,17 +403,32 @@ impl<AF, PF, V> EdgeCoverageModuleBuilder<AF, PF, V> {
         }
     }
 
-    pub fn build(self) -> EdgeCoverageModule<AF, PF, V> {
+    #[must_use]
-        EdgeCoverageModule::new(
+    pub fn map_observer<O>(self, map_observer: &mut O) -> EdgeCoverageModuleBuilder<AF, PF, V, true>
+    where
+        O: VariableLengthMapObserver,
+    {
+        let map_ptr = map_observer.map_slice_mut().as_mut_ptr() as *mut u8;
+        let map_max_size = map_observer.map_slice_mut().len();
+        let size_ptr = map_observer.as_mut().size_mut() as *mut usize;
+
+        unsafe {
+            LIBAFL_QEMU_EDGES_MAP_PTR = map_ptr;
+            LIBAFL_QEMU_EDGES_MAP_SIZE_PTR = size_ptr;
+            LIBAFL_QEMU_EDGES_MAP_ALLOCATED_SIZE = map_max_size;
+            LIBAFL_QEMU_EDGES_MAP_MASK_MAX = map_max_size - 1;
+        }
+
+        EdgeCoverageModuleBuilder::<AF, PF, V, true>::new(
+            self.variant,
             self.address_filter,
             self.page_filter,
-            self.variant,
             self.use_hitcounts,
             self.use_jit,
         )
     }
 
-    pub fn variant<V2>(self, variant: V2) -> EdgeCoverageModuleBuilder<AF, PF, V2> {
+    pub fn variant<V2>(self, variant: V2) -> EdgeCoverageModuleBuilder<AF, PF, V2, IS_INITIALIZED> {
         EdgeCoverageModuleBuilder::new(
             variant,
             self.address_filter,
@@ -401,7 +438,10 @@ impl<AF, PF, V> EdgeCoverageModuleBuilder<AF, PF, V> {
         )
     }
 
-    pub fn address_filter<AF2>(self, address_filter: AF2) -> EdgeCoverageModuleBuilder<AF2, PF, V> {
+    pub fn address_filter<AF2>(
+        self,
+        address_filter: AF2,
+    ) -> EdgeCoverageModuleBuilder<AF2, PF, V, IS_INITIALIZED> {
         EdgeCoverageModuleBuilder::new(
             self.variant,
             address_filter,
@@ -411,7 +451,10 @@ impl<AF, PF, V> EdgeCoverageModuleBuilder<AF, PF, V> {
         )
     }
 
-    pub fn page_filter<PF2>(self, page_filter: PF2) -> EdgeCoverageModuleBuilder<AF, PF2, V> {
+    pub fn page_filter<PF2>(
+        self,
+        page_filter: PF2,
+    ) -> EdgeCoverageModuleBuilder<AF, PF2, V, IS_INITIALIZED> {
         EdgeCoverageModuleBuilder::new(
             self.variant,
             self.address_filter,
@@ -422,7 +465,10 @@ impl<AF, PF, V> EdgeCoverageModuleBuilder<AF, PF, V> {
     }
 
     #[must_use]
-    pub fn hitcounts(self, use_hitcounts: bool) -> EdgeCoverageModuleBuilder<AF, PF, V> {
+    pub fn hitcounts(
+        self,
+        use_hitcounts: bool,
+    ) -> EdgeCoverageModuleBuilder<AF, PF, V, IS_INITIALIZED> {
         EdgeCoverageModuleBuilder::new(
             self.variant,
             self.address_filter,
@@ -433,7 +479,7 @@ impl<AF, PF, V> EdgeCoverageModuleBuilder<AF, PF, V> {
     }
 
     #[must_use]
-    pub fn jit(self, use_jit: bool) -> EdgeCoverageModuleBuilder<AF, PF, V> {
+    pub fn jit(self, use_jit: bool) -> EdgeCoverageModuleBuilder<AF, PF, V, IS_INITIALIZED> {
         EdgeCoverageModuleBuilder::new(
             self.variant,
             self.address_filter,
@@ -548,10 +594,15 @@ where
     S: Unpin + UsesInput + HasMetadata,
     V: EdgeCoverageVariant<AF, PF>,
 {
-    if let Some(h) = emulator_modules.get::<EdgeCoverageModule<AF, PF, V>>() {
+    if let Some(module) = emulator_modules.get::<EdgeCoverageModule<AF, PF, V>>() {
+        unsafe {
+            assert!(LIBAFL_QEMU_EDGES_MAP_MASK_MAX > 0);
+            assert_ne!(*addr_of!(LIBAFL_QEMU_EDGES_MAP_SIZE_PTR), ptr::null_mut());
+        }
+
         #[cfg(emulation_mode = "usermode")]
         {
-            if !h.must_instrument(src) && !h.must_instrument(dest) {
+            if !module.must_instrument(src) && !module.must_instrument(dest) {
                 return None;
             }
         }
@@ -563,29 +614,30 @@ where
                 .current_cpu()
                 .and_then(|cpu| cpu.current_paging_id());
 
-            if !h.must_instrument(src, paging_id) && !h.must_instrument(dest, paging_id) {
+            if !module.must_instrument(src, paging_id) && !module.must_instrument(dest, paging_id) {
                 return None;
             }
         }
     }
+
     let state = state.expect("The gen_unique_edge_ids hook works only for in-process fuzzing");
     let meta = state.metadata_or_insert_with(QemuEdgesMapMetadata::new);
 
     match meta.map.entry((src, dest)) {
         Entry::Occupied(e) => {
             let id = *e.get();
-            let nxt = (id as usize + 1) & (EDGES_MAP_SIZE_MAX - 1);
             unsafe {
-                MAX_EDGES_FOUND = max(MAX_EDGES_FOUND, nxt);
+                let nxt = (id as usize + 1) & LIBAFL_QEMU_EDGES_MAP_MASK_MAX;
+                *LIBAFL_QEMU_EDGES_MAP_SIZE_PTR = max(*LIBAFL_QEMU_EDGES_MAP_SIZE_PTR, nxt);
             }
             Some(id)
         }
         Entry::Vacant(e) => {
             let id = meta.current_id;
             e.insert(id);
-            meta.current_id = (id + 1) & (EDGES_MAP_SIZE_MAX as u64 - 1);
             unsafe {
-                MAX_EDGES_FOUND = meta.current_id as usize;
+                meta.current_id = (id + 1) & (LIBAFL_QEMU_EDGES_MAP_MASK_MAX as u64);
+                *LIBAFL_QEMU_EDGES_MAP_SIZE_PTR = meta.current_id as usize;
             }
             // GuestAddress is u32 for 32 bit guests
             #[allow(clippy::unnecessary_cast)]
@@ -624,9 +676,9 @@ where
     S: Unpin + UsesInput + HasMetadata,
     V: EdgeCoverageVariant<AF, PF>,
 {
-    if let Some(h) = emulator_modules.get::<EdgeCoverageModule<AF, PF, V>>() {
+    if let Some(module) = emulator_modules.get::<EdgeCoverageModule<AF, PF, V>>() {
         #[cfg(emulation_mode = "usermode")]
-        if !h.must_instrument(src) && !h.must_instrument(dest) {
+        if !module.must_instrument(src) && !module.must_instrument(dest) {
             return None;
         }
 
@@ -637,29 +689,31 @@ where
                 .current_cpu()
                 .and_then(|cpu| cpu.current_paging_id());
 
-            if !h.must_instrument(src, paging_id) && !h.must_instrument(dest, paging_id) {
+            if !module.must_instrument(src, paging_id) && !module.must_instrument(dest, paging_id) {
                 return None;
             }
         }
+
+        let id = hash_me(src as u64) ^ hash_me(dest as u64);
+
+        unsafe {
+            let nxt = (id as usize + 1) & LIBAFL_QEMU_EDGES_MAP_MASK_MAX;
+            *LIBAFL_QEMU_EDGES_MAP_SIZE_PTR = nxt;
+        }
+
+        // GuestAddress is u32 for 32 bit guests
+        #[allow(clippy::unnecessary_cast)]
+        Some(id)
+    } else {
+        None
     }
-
-    let id = hash_me(src as u64) ^ hash_me(dest as u64);
-    let nxt = (id as usize + 1) & (EDGES_MAP_SIZE_MAX - 1);
-
-    unsafe {
-        MAX_EDGES_FOUND = nxt;
-    }
-
-    // GuestAddress is u32 for 32 bit guests
-    #[allow(clippy::unnecessary_cast)]
-    Some(id)
 }
 
 /// # Safety
 /// Increases id at `EDGES_MAP_PTR` - potentially racey if called concurrently.
 pub unsafe extern "C" fn trace_edge_hitcount_ptr(_: *const (), id: u64) {
     unsafe {
-        let ptr = EDGES_MAP_PTR.add(id as usize);
+        let ptr = LIBAFL_QEMU_EDGES_MAP_PTR.add(id as usize);
         *ptr = (*ptr).wrapping_add(1);
     }
 }
@@ -669,7 +723,7 @@ pub unsafe extern "C" fn trace_edge_hitcount_ptr(_: *const (), id: u64) {
 /// Worst case we set the byte to 1 multiple times.
 pub unsafe extern "C" fn trace_edge_single_ptr(_: *const (), id: u64) {
     unsafe {
-        let ptr = EDGES_MAP_PTR.add(id as usize);
+        let ptr = LIBAFL_QEMU_EDGES_MAP_PTR.add(id as usize);
         *ptr = 1;
     }
 }
@@ -687,10 +741,11 @@ where
     S: Unpin + UsesInput + HasMetadata,
     V: EdgeCoverageVariant<AF, PF>,
 {
-    if let Some(h) = emulator_modules.get::<EdgeCoverageModule<AF, PF, V>>() {
+    // first check if we should filter
+    if let Some(module) = emulator_modules.get::<EdgeCoverageModule<AF, PF, V>>() {
         #[cfg(emulation_mode = "usermode")]
         {
-            if !h.must_instrument(pc) {
+            if !module.must_instrument(pc) {
                 return None;
             }
         }
@@ -701,17 +756,17 @@ where
                 .current_cpu()
                 .and_then(|cpu| cpu.current_paging_id());
 
-            if !h.must_instrument(pc, page_id) {
+            if !module.must_instrument(pc, page_id) {
                 return None;
             }
         }
     }
 
     let id = hash_me(pc as u64);
-    let nxt = (id as usize + 1) & (EDGES_MAP_SIZE_MAX - 1);
 
     unsafe {
-        MAX_EDGES_FOUND = nxt;
+        let nxt = (id as usize + 1) & LIBAFL_QEMU_EDGES_MAP_MASK_MAX;
+        *LIBAFL_QEMU_EDGES_MAP_SIZE_PTR = nxt;
     }
 
     // GuestAddress is u32 for 32 bit guests
@@ -724,8 +779,8 @@ where
 pub unsafe extern "C" fn trace_block_transition_hitcount(_: *const (), id: u64) {
     unsafe {
         PREV_LOC.with(|prev_loc| {
-            let x = ((*prev_loc.get() ^ id) as usize) & (EDGES_MAP_SIZE_MAX - 1);
+            let x = ((*prev_loc.get() ^ id) as usize) & LIBAFL_QEMU_EDGES_MAP_MASK_MAX;
-            let entry = EDGES_MAP_PTR.add(x);
+            let entry = LIBAFL_QEMU_EDGES_MAP_PTR.add(x);
             *entry = (*entry).wrapping_add(1);
             *prev_loc.get() = id.overflowing_shr(1).0;
         });
@@ -737,8 +792,8 @@ pub unsafe extern "C" fn trace_block_transition_hitcount(_: *const (), id: u64)
 pub unsafe extern "C" fn trace_block_transition_single(_: *const (), id: u64) {
     unsafe {
         PREV_LOC.with(|prev_loc| {
-            let x = ((*prev_loc.get() ^ id) as usize) & (EDGES_MAP_SIZE_MAX - 1);
+            let x = ((*prev_loc.get() ^ id) as usize) & LIBAFL_QEMU_EDGES_MAP_MASK_MAX;
-            let entry = EDGES_MAP_PTR.add(x);
+            let entry = LIBAFL_QEMU_EDGES_MAP_PTR.add(x);
             *entry = 1;
             *prev_loc.get() = id.overflowing_shr(1).0;
         });

libafl_qemu/src/modules/usermode/asan_guest.rs

@@ -146,8 +146,8 @@ impl<F> AsanGuestModule<F> {
 
 impl AsanGuestModule<StdAddressFilter> {
     #[must_use]
-    pub fn default(emu: &Qemu, asan: String) -> Self {
+    pub fn default(qemu: Qemu, asan: String) -> Self {
-        Self::new(emu, asan, StdAddressFilter::default())
+        Self::new(qemu, asan, StdAddressFilter::default())
     }
 }
 
@@ -156,12 +156,12 @@ where
     F: AddressFilter,
 {
     #[must_use]
-    pub fn new(emu: &Qemu, asan: String, filter: F) -> Self {
+    pub fn new(qemu: Qemu, asan: String, filter: F) -> Self {
-        for mapping in emu.mappings() {
+        for mapping in qemu.mappings() {
             println!("mapping: {mapping:#?}");
         }
 
-        let mappings = emu
+        let mappings = qemu
             .mappings()
             .map(|m| QemuAsanGuestMapping::from(&m))
             .collect::<Vec<QemuAsanGuestMapping>>();

libafl_qemu/src/modules/usermode/snapshot.rs

@@ -34,7 +34,7 @@ use crate::{
 pub const SNAPSHOT_PAGE_SIZE: usize = 4096;
 pub const SNAPSHOT_PAGE_MASK: GuestAddr = !(SNAPSHOT_PAGE_SIZE as GuestAddr - 1);
 
-pub type StopExecutionCallback = Box<dyn FnMut(&mut SnapshotModule, &Qemu)>;
+pub type StopExecutionCallback = Box<dyn FnMut(&mut SnapshotModule, Qemu)>;
 
 #[derive(Clone, Debug)]
 pub struct SnapshotPageInfo {
@@ -510,7 +510,7 @@ impl SnapshotModule {
         if self.mmap_limit != 0 && total_size > self.mmap_limit {
             let mut cb = self.stop_execution.take().unwrap();
             let qemu = Qemu::get().unwrap();
-            cb(self, &qemu);
+            cb(self, qemu);
             self.stop_execution = Some(cb);
         }
     }

libafl_qemu/src/qemu/hooks.rs

@@ -712,6 +712,8 @@ create_exec_wrapper!(cmp, (id: u64, v0: u64, v1: u64), 3, 4, CmpHookId);
 
 // Crash hook wrappers
 #[cfg(emulation_mode = "usermode")]
+pub type CrashHookFn<ET, S> = fn(&mut EmulatorModules<ET, S>, i32);
+#[cfg(emulation_mode = "usermode")]
 pub type CrashHookClosure<ET, S> = Box<dyn FnMut(&mut EmulatorModules<ET, S>, i32)>;
 
 /// The thin wrapper around QEMU hooks.
@@ -1035,7 +1037,7 @@ impl QemuHooks {
     #[allow(clippy::unused_self)]
     pub(crate) fn set_crash_hook(self, callback: extern "C" fn(i32)) {
         unsafe {
-            libafl_dump_core_hook = callback;
+            libafl_dump_core_hook = Some(callback);
         }
     }
 }

libafl_qemu/src/qemu/mod.rs

@@ -155,10 +155,10 @@ static mut GDB_COMMANDS: Vec<Box<FatPtr>> = Vec::new();
 
 unsafe extern "C" fn gdb_cmd(data: *mut c_void, buf: *mut u8, len: usize) -> bool {
     unsafe {
-        let closure = &mut *(data as *mut Box<dyn for<'r> FnMut(&Qemu, &'r str) -> bool>);
+        let closure = &mut *(data as *mut Box<dyn for<'r> FnMut(Qemu, &'r str) -> bool>);
         let cmd = std::str::from_utf8_unchecked(std::slice::from_raw_parts(buf, len));
         let qemu = Qemu::get_unchecked();
-        closure(&qemu, cmd)
+        closure(qemu, cmd)
     }
 }
 

libafl_qemu/src/qemu/usermode.rs

@@ -1,6 +1,6 @@
 use std::{
-    intrinsics::copy_nonoverlapping, mem::MaybeUninit, slice::from_raw_parts,
+    intrinsics::copy_nonoverlapping, mem::MaybeUninit, slice::from_raw_parts_mut,
-    str::from_utf8_unchecked,
+    str::from_utf8_unchecked_mut,
 };
 
 use libafl_qemu_sys::{
@@ -9,7 +9,7 @@ use libafl_qemu_sys::{
     pageflags_get_root, read_self_maps, GuestAddr, GuestUsize, IntervalTreeNode, IntervalTreeRoot,
     MapInfo, MmapPerms, VerifyAccess,
 };
-use libc::{c_char, c_int, strlen};
+use libc::{c_char, c_int, c_uchar, strlen};
 #[cfg(feature = "python")]
 use pyo3::{pyclass, pymethods, IntoPy, PyObject, PyRef, PyRefMut, Python};
 
@@ -139,8 +139,8 @@ impl Qemu {
     #[must_use]
     pub fn binary_path<'a>(&self) -> &'a str {
         unsafe {
-            from_utf8_unchecked(from_raw_parts(
+            from_utf8_unchecked_mut(from_raw_parts_mut(
-                exec_path,
+                exec_path as *mut c_uchar,
                 strlen(exec_path as *const c_char),
             ))
         }

libafl_sugar/src/qemu.rs

@@ -39,11 +39,8 @@ use libafl_bolts::{
 #[cfg(not(any(feature = "mips", feature = "hexagon")))]
 use libafl_qemu::modules::CmpLogModule;
 pub use libafl_qemu::qemu::Qemu;
-use libafl_qemu::{
+use libafl_qemu::{modules::edges::StdEdgeCoverageModule, Emulator, QemuExecutor};
-    modules::{edges, edges::StdEdgeCoverageModule},
+use libafl_targets::{edges_map_mut_ptr, CmpLogObserver, EDGES_MAP_DEFAULT_SIZE, MAX_EDGES_FOUND};
-    Emulator, QemuExecutor,
-};
-use libafl_targets::{edges_map_mut_ptr, CmpLogObserver};
 use typed_builder::TypedBuilder;
 
 use crate::{CORPUS_CACHE_SIZE, DEFAULT_TIMEOUT_SECS};
@@ -160,14 +157,11 @@ where
             let time_observer = time_observer.clone();
 
             // Create an observation channel using the coverage map
-            let edges_observer = unsafe {
+            let mut edges_observer = unsafe {
                 HitcountsMapObserver::new(VariableMapObserver::from_mut_slice(
                     "edges",
-                    OwnedMutSlice::from_raw_parts_mut(
+                    OwnedMutSlice::from_raw_parts_mut(edges_map_mut_ptr(), EDGES_MAP_DEFAULT_SIZE),
-                        edges_map_mut_ptr(),
+                    addr_of_mut!(MAX_EDGES_FOUND),
-                        edges::EDGES_MAP_SIZE_IN_USE,
-                    ),
-                    addr_of_mut!(edges::MAX_EDGES_FOUND),
                 ))
                 .track_indices()
             };
@@ -223,13 +217,19 @@ where
                     #[cfg(not(any(feature = "mips", feature = "hexagon")))]
                     {
                         tuple_list!(
-                            StdEdgeCoverageModule::builder().build(),
+                            StdEdgeCoverageModule::builder()
+                                .map_observer(edges_observer.as_mut())
+                                .build()
+                                .unwrap(),
                             CmpLogModule::default(),
                         )
                     }
                     #[cfg(any(feature = "mips", feature = "hexagon"))]
                     {
-                        tuple_list!(StdEdgeCoverageModule::builder().build())
+                        tuple_list!(StdEdgeCoverageModule::builder()
+                            .map_observer(edges_observer.as_mut())
+                            .build()
+                            .unwrap())
                     }
                 };
 
@@ -345,7 +345,10 @@ where
                     }
                 }
             } else {
-                let modules = tuple_list!(StdEdgeCoverageModule::builder().build());
+                let modules = tuple_list!(StdEdgeCoverageModule::builder()
+                    .map_observer(edges_observer.as_mut())
+                    .build()
+                    .unwrap());
 
                 let mut harness = |_emulator: &mut Emulator<_, _, _, _, _>,
                                    _state: &mut _,

libafl_targets/build.rs

@@ -26,36 +26,47 @@ fn main() {
     let dest_path = Path::new(&out_dir).join("constants.rs");
     let mut constants_file = File::create(dest_path).expect("Could not create file");
 
-    let edges_map_size_max: usize = option_env!("LIBAFL_EDGES_MAP_SIZE_MAX")
+    let edges_map_allocated_size: usize = option_env!("LIBAFL_EDGES_MAP_ALLOCATED_SIZE")
+        .or(option_env!("LIBAFL_EDGES_MAP_ALLOCATED_SIZE")) // keep old env for retrocompatibility
         .map_or(Ok(TWO_MB), str::parse)
-        .expect("Could not parse LIBAFL_EDGES_MAP_SIZE_MAX");
+        .expect("Could not parse LIBAFL_EDGES_MAP_ALLOCATED_SIZE");
-    let edges_map_size_in_use: usize = option_env!("LIBAFL_EDGES_MAP_SIZE_IN_USE")
+
+    let edges_map_default_size: usize = option_env!("LIBAFL_EDGES_MAP_DEFAULT_SIZE")
+        .or(option_env!("LIBAFL_EDGES_MAP_DEFAULT_SIZE")) // keep old env for retrocompatibility
         .map_or(Ok(SIXTY_FIVE_KB), str::parse)
-        .expect("Could not parse LIBAFL_EDGES_MAP_SIZE_IN_USE");
+        .expect("Could not parse LIBAFL_EDGES_MAP_DEFAULT_SIZE");
+
     let cmp_map_size: usize = option_env!("LIBAFL_CMP_MAP_SIZE")
         .map_or(Ok(SIXTY_FIVE_KB), str::parse)
         .expect("Could not parse LIBAFL_CMP_MAP_SIZE");
+
     let cmplog_map_w: usize = option_env!("LIBAFL_CMPLOG_MAP_W")
         .map_or(Ok(SIXTY_FIVE_KB), str::parse)
         .expect("Could not parse LIBAFL_CMPLOG_MAP_W");
+
     let cmplog_map_h: usize = option_env!("LIBAFL_CMPLOG_MAP_H")
         .map_or(Ok(32), str::parse)
         .expect("Could not parse LIBAFL_CMPLOG_MAP_H");
+
     let acc_map_size: usize = option_env!("LIBAFL_ACCOUNTING_MAP_SIZE")
         .map_or(Ok(SIXTY_FIVE_KB), str::parse)
         .expect("Could not parse LIBAFL_ACCOUNTING_MAP_SIZE");
+
     let ddg_map_size: usize = option_env!("LIBAFL_DDG_MAP_SIZE")
         .map_or(Ok(SIXTY_FIVE_KB), str::parse)
         .expect("Could not parse LIBAFL_DDG_MAP_SIZE");
 
+    assert!(edges_map_default_size <= edges_map_allocated_size);
+    assert!(edges_map_default_size.is_power_of_two());
+
     write!(
         constants_file,
         "// These constants are autogenerated by build.rs
 
         /// The default size of the edges map the fuzzer uses
-        pub const EDGES_MAP_SIZE_IN_USE: usize = {edges_map_size_in_use};
+        pub const EDGES_MAP_DEFAULT_SIZE: usize = {edges_map_default_size};
         /// The real allocated size of the edges map
-        pub const EDGES_MAP_SIZE_MAX: usize = {edges_map_size_max};
+        pub const EDGES_MAP_ALLOCATED_SIZE: usize = {edges_map_allocated_size};
         /// The size of the cmps map
         pub const CMP_MAP_SIZE: usize = {cmp_map_size};
         /// The width of the `CmpLog` map
@@ -70,7 +81,10 @@ fn main() {
     )
     .expect("Could not write file");
 
-    println!("cargo:rerun-if-env-changed=LIBAFL_EDGES_MAP_SIZE_IN_USE");
+    println!("cargo:rerun-if-env-changed=LIBAFL_EDGES_MAP_DEFAULT_SIZE");
+    println!("cargo:rerun-if-env-changed=LIBAFL_EDGES_MAP_DEFAULT_SIZE");
+    println!("cargo:rerun-if-env-changed=LIBAFL_EDGES_MAP_ALLOCATED_SIZE");
+    println!("cargo:rerun-if-env-changed=LIBAFL_EDGES_MAP_ALLOCATED_SIZE");
     println!("cargo:rerun-if-env-changed=LIBAFL_CMP_MAP_SIZE");
     println!("cargo:rerun-if-env-changed=LIBAFL_CMPLOG_MAP_W");
     println!("cargo:rerun-if-env-changed=LIBAFL_CMPLOG_MAP_H");
@@ -160,8 +174,8 @@ fn main() {
         cc::Build::new()
             .file(src_dir.join("coverage.c"))
             .define(
-                "EDGES_MAP_SIZE_MAX",
+                "EDGES_MAP_ALLOCATED_SIZE",
-                Some(&*format!("{edges_map_size_max}")),
+                Some(&*format!("{edges_map_allocated_size}")),
             )
             .define("ACCOUNTING_MAP_SIZE", Some(&*format!("{acc_map_size}")))
             .define("DDG_MAP_SIZE", Some(&*format!("{ddg_map_size}")))

libafl_targets/src/coverage.c

@@ -8,7 +8,7 @@ typedef uint32_t prev_loc_t;
 /* Maximum K for top-K context sensitivity */
 #define CTX_MAX_K 32U
 
-extern uint8_t __afl_area_ptr_local[EDGES_MAP_SIZE_MAX];
+extern uint8_t __afl_area_ptr_local[EDGES_MAP_ALLOCATED_SIZE];
 uint8_t       *__afl_area_ptr = __afl_area_ptr_local;
 
 extern uint8_t __ddg_area_ptr_local[DDG_MAP_SIZE];

libafl_targets/src/coverage.rs

@@ -20,12 +20,12 @@ use core::ptr::addr_of_mut;
 #[cfg(any(target_os = "linux", target_vendor = "apple"))]
 use libafl::{mutators::Tokens, Error};
 
-use crate::{ACCOUNTING_MAP_SIZE, DDG_MAP_SIZE, EDGES_MAP_SIZE_IN_USE, EDGES_MAP_SIZE_MAX};
+use crate::{ACCOUNTING_MAP_SIZE, DDG_MAP_SIZE, EDGES_MAP_ALLOCATED_SIZE, EDGES_MAP_DEFAULT_SIZE};
 
 /// The map for edges.
 #[no_mangle]
 #[allow(non_upper_case_globals)]
-pub static mut __afl_area_ptr_local: [u8; EDGES_MAP_SIZE_MAX] = [0; EDGES_MAP_SIZE_MAX];
+pub static mut __afl_area_ptr_local: [u8; EDGES_MAP_ALLOCATED_SIZE] = [0; EDGES_MAP_ALLOCATED_SIZE];
 pub use __afl_area_ptr_local as EDGES_MAP;
 
 /// The map for data dependency
@@ -85,9 +85,9 @@ pub fn autotokens() -> Result<Tokens, Error> {
 
 /// The actual size we use for the map of edges.
 /// This is used for forkserver backend
-#[no_mangle]
 #[allow(non_upper_case_globals)]
-pub static mut __afl_map_size: usize = EDGES_MAP_SIZE_IN_USE;
+#[no_mangle]
+pub static mut __afl_map_size: usize = EDGES_MAP_DEFAULT_SIZE;
 
 #[cfg(any(
     feature = "sancov_pcguard_edges",
@@ -127,11 +127,11 @@ pub unsafe fn edges_map_mut_slice<'a>() -> OwnedMutSlice<'a, u8> {
 ///
 /// ```rust,ignore
 /// use libafl::observers::StdMapObserver;
-/// use libafl_targets::{EDGES_MAP, EDGES_MAP_SIZE_IN_USE};
+/// use libafl_targets::{EDGES_MAP, EDGES_MAP_DEFAULT_SIZE};
 ///
 /// #[cfg(not(feature = "pointer_maps"))]
 /// let observer = unsafe {
-///     StdMapObserver::from_mut_ptr("edges", EDGES_MAP.as_mut_ptr(), EDGES_MAP_SIZE_IN_USE)
+///     StdMapObserver::from_mut_ptr("edges", EDGES_MAP.as_mut_ptr(), EDGES_MAP_DEFAULT_SIZE)
 /// };
 /// ```
 ///
@@ -192,7 +192,7 @@ pub fn edges_max_num() -> usize {
         } else {
             #[cfg(feature = "pointer_maps")]
             {
-                EDGES_MAP_SIZE_MAX // the upper bound
+                EDGES_MAP_ALLOCATED_SIZE // the upper bound
             }
             #[cfg(not(feature = "pointer_maps"))]
             {

libafl_targets/src/sancov_pcguard.rs

@@ -27,9 +27,9 @@ use crate::coverage::EDGES_MAP;
 use crate::coverage::MAX_EDGES_FOUND;
 #[cfg(any(feature = "sancov_ngram4", feature = "sancov_ngram8"))]
 #[allow(unused)]
-use crate::EDGES_MAP_SIZE_IN_USE;
+use crate::EDGES_MAP_DEFAULT_SIZE;
 #[cfg(feature = "pointer_maps")]
-use crate::{coverage::EDGES_MAP_PTR, EDGES_MAP_SIZE_MAX};
+use crate::{coverage::EDGES_MAP_PTR, EDGES_MAP_ALLOCATED_SIZE};
 
 #[cfg(all(feature = "sancov_pcguard_edges", feature = "sancov_pcguard_hitcounts"))]
 #[cfg(not(any(doc, feature = "clippy")))]
@@ -204,7 +204,7 @@ unsafe fn update_ngram(pos: usize) -> usize {
         prev_array_8.as_mut_array()[0] = pos as u32;
         reduced = prev_array_8.reduce_xor() as usize;
     }
-    reduced %= EDGES_MAP_SIZE_IN_USE;
+    reduced %= EDGES_MAP_DEFAULT_SIZE;
     reduced
 }
 
@@ -233,13 +233,13 @@ pub unsafe extern "C" fn __sanitizer_cov_trace_pc_guard(guard: *mut u32) {
     #[cfg(any(feature = "sancov_ngram4", feature = "sancov_ngram8"))]
     {
         pos = update_ngram(pos);
-        // println!("Wrinting to {} {}", pos, EDGES_MAP_SIZE_IN_USE);
+        // println!("Wrinting to {} {}", pos, EDGES_MAP_DEFAULT_SIZE);
     }
 
     #[cfg(feature = "sancov_ctx")]
     {
         pos ^= __afl_prev_ctx as usize;
-        // println!("Wrinting to {} {}", pos, EDGES_MAP_SIZE_IN_USE);
+        // println!("Wrinting to {} {}", pos, EDGES_MAP_DEFAULT_SIZE);
     }
 
     #[cfg(feature = "pointer_maps")]
@@ -291,13 +291,13 @@ pub unsafe extern "C" fn __sanitizer_cov_trace_pc_guard_init(mut start: *mut u32
 
         #[cfg(feature = "pointer_maps")]
         {
-            MAX_EDGES_FOUND = MAX_EDGES_FOUND.wrapping_add(1) % EDGES_MAP_SIZE_MAX;
+            MAX_EDGES_FOUND = MAX_EDGES_FOUND.wrapping_add(1) % EDGES_MAP_ALLOCATED_SIZE;
         }
         #[cfg(not(feature = "pointer_maps"))]
         {
             let edges_map_len = (*addr_of!(EDGES_MAP)).len();
             MAX_EDGES_FOUND = MAX_EDGES_FOUND.wrapping_add(1);
-            assert!((MAX_EDGES_FOUND <= edges_map_len), "The number of edges reported by SanitizerCoverage exceed the size of the edges map ({edges_map_len}). Use the LIBAFL_EDGES_MAP_SIZE_IN_USE env to increase it at compile time.");
+            assert!((MAX_EDGES_FOUND <= edges_map_len), "The number of edges reported by SanitizerCoverage exceed the size of the edges map ({edges_map_len}). Use the LIBAFL_EDGES_MAP_DEFAULT_SIZE env to increase it at compile time.");
         }
     }
 }

utils/libafl_fmt/src/main.rs

@@ -95,12 +95,15 @@ fn is_workspace_toml(path: &Path) -> bool {
     false
 }
 
-async fn run_cargo_fmt(path: PathBuf, is_check: bool, verbose: bool) -> io::Result<()> {
+async fn run_cargo_fmt(cargo_file_path: PathBuf, is_check: bool, verbose: bool) -> io::Result<()> {
     // Make sure we parse the correct file
-    assert_eq!(path.file_name().unwrap().to_str().unwrap(), "Cargo.toml");
+    assert_eq!(
+        cargo_file_path.file_name().unwrap().to_str().unwrap(),
+        "Cargo.toml"
+    );
 
-    if is_workspace_toml(path.as_path()) {
+    if is_workspace_toml(cargo_file_path.as_path()) {
-        println!("[*] Skipping {}...", path.as_path().display());
+        println!("[*] Skipping {}...", cargo_file_path.as_path().display());
         return Ok(());
     }
 
@@ -112,14 +115,18 @@ async fn run_cargo_fmt(path: PathBuf, is_check: bool, verbose: bool) -> io::Resu
         .arg("+nightly")
         .arg("fmt")
         .arg("--manifest-path")
-        .arg(path.as_path());
+        .arg(cargo_file_path.as_path());
 
     if is_check {
         fmt_command.arg("--check");
     }
 
     if verbose {
-        println!("[*] {} {}...", task_str, path.as_path().display());
+        println!(
+            "[*] {} {}...",
+            task_str,
+            cargo_file_path.as_path().display()
+        );
     }
 
     let res = fmt_command.output().await?;
@@ -130,7 +137,7 @@ async fn run_cargo_fmt(path: PathBuf, is_check: bool, verbose: bool) -> io::Resu
         return Err(io::Error::new(
             ErrorKind::Other,
             format!(
-                "Cargo fmt failed. Run cargo fmt for {path:#?}.\nstdout: {stdout}\nstderr: {stderr}"),
+                "Cargo fmt failed. Run cargo fmt for {cargo_file_path:#?}.\nstdout: {stdout}\nstderr: {stderr}\ncommand: {fmt_command:?}"),
         ));
     }
 
@@ -138,7 +145,7 @@ async fn run_cargo_fmt(path: PathBuf, is_check: bool, verbose: bool) -> io::Resu
 }
 
 async fn run_clang_fmt(
-    path: PathBuf,
+    c_file_path: PathBuf,
     clang: String,
     is_check: bool,
     verbose: bool,
@@ -151,16 +158,16 @@ async fn run_clang_fmt(
         .arg("-i")
         .arg("--style")
         .arg("file")
-        .arg(path.as_path());
+        .arg(c_file_path.as_path());
 
     if is_check {
         fmt_command.arg("-Werror").arg("--dry-run");
     }
 
-    fmt_command.arg(path.as_path());
+    fmt_command.arg(c_file_path.as_path());
 
     if verbose {
-        println!("[*] {} {}...", task_str, path.as_path().display());
+        println!("[*] {} {}...", task_str, c_file_path.as_path().display());
     }
 
     let res = fmt_command.output().await?;