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[fuzzing] Use software bound-check during fuzzing #4003

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merged 2 commits into from
Jan 6, 2025
Merged

[fuzzing] Use software bound-check during fuzzing #4003

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2538eae
Update CMakeLists.txt of fuzzing
lum1n0us Dec 31, 2024
d12aeeb
Fix off-by-one error in result offset calculation for function calls
lum1n0us Jan 3, 2025
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Fix off-by-one error in result offset calculation for function calls
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@lum1n0us
lum1n0us committed Jan 5, 2025
commit d12aeeb31dd898e053ff16f76933aaecec3abd89
7 changes: 4 additions & 3 deletions core/iwasm/interpreter/wasm_interp_fast.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1670,7 +1670,8 @@ wasm_interp_call_func_bytecode(WASMModuleInstance *module,
{
uint32 ret_idx;
WASMFuncType *func_type;
uint32 off, ret_offset;
int32 off;
uint32 ret_offset;
uint8 *ret_types;
if (cur_func->is_import_func)
func_type = cur_func->u.func_import->func_type;
Expand All @@ -1682,9 +1683,9 @@ wasm_interp_call_func_bytecode(WASMModuleInstance *module,
ret_offset = prev_frame->ret_offset;

for (ret_idx = 0,
off = sizeof(int16) * (func_type->result_count - 1);
off = (int32)sizeof(int16) * (func_type->result_count - 1);
ret_idx < func_type->result_count;
ret_idx++, off -= sizeof(int16)) {
ret_idx++, off -= (int32)sizeof(int16)) {
if (ret_types[ret_idx] == VALUE_TYPE_I64
|| ret_types[ret_idx] == VALUE_TYPE_F64) {
PUT_I64_TO_ADDR(prev_frame->lp + ret_offset,
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2 changes: 1 addition & 1 deletion tests/fuzz/wasm-mutator-fuzz/CMakeLists.txt
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Expand Up @@ -72,7 +72,7 @@ endif ()

if (NOT DEFINED WAMR_BUILD_LIBC_WASI)
# Enable libc wasi support by default
set (WAMR_BUILD_LIBC_WASI 1)
set (WAMR_BUILD_LIBC_WASI 0)
endif ()

if (NOT DEFINED WAMR_BUILD_FAST_INTERP)
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