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Merge pull request #2270 from AFLplusplus/dev

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fix map size difference bug
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van Hauser 2024-12-14 08:17:46 +01:00 committed by GitHub
commit 3e18b1a10c
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2 changed files with 5 additions and 4 deletions
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2
docs/Changelog.md
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@ -11,6 +11,8 @@
compiling if LLVMFuzzerTestOneOnput is in an .a archive compiling if LLVMFuzzerTestOneOnput is in an .a archive
- added __sanitizer_weak_hook_* functions (in case that is helpful in - added __sanitizer_weak_hook_* functions (in case that is helpful in
weird setups) weird setups)
- fix bug with large map sizes when multiple libraries are loaded after
the shared memory was obtained.
### Version ++4.30c (release) ### Version ++4.30c (release)

7
instrumentation/afl-compiler-rt.o.c
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@ -11,7 +11,6 @@
https://www.apache.org/licenses/LICENSE-2.0 https://www.apache.org/licenses/LICENSE-2.0
*/ */
#ifdef __AFL_CODE_COVERAGE #ifdef __AFL_CODE_COVERAGE
@ -358,7 +357,7 @@ static void __afl_map_shm(void) {
if (__afl_final_loc) { if (__afl_final_loc) {
__afl_map_size = ++__afl_final_loc; // as we count starting 0 __afl_map_size = __afl_final_loc + 1; // as we count starting 0
if (getenv("AFL_DUMP_MAP_SIZE")) { if (getenv("AFL_DUMP_MAP_SIZE")) {
@ -601,9 +600,9 @@ static void __afl_map_shm(void) {
} }
__afl_area_ptr_dummy = (u8 *)malloc(__afl_final_loc); __afl_map_size = __afl_final_loc + 1;
__afl_area_ptr_dummy = (u8 *)malloc(__afl_map_size);
__afl_area_ptr = __afl_area_ptr_dummy; __afl_area_ptr = __afl_area_ptr_dummy;
__afl_map_size = __afl_final_loc;
if (!__afl_area_ptr_dummy) { if (!__afl_area_ptr_dummy) {