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wasm_runtime.c: Fix fault modification on data segment (#1116)

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Fix fault modification on data segment in wasm module which leads to
fail to instantiate wasm module next time, reported by #1115.

Co-authored-by: yangwenming <yangwenming@bytedance.com>
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YoungWenMing 2022-04-23 17:38:11 +08:00 committed by GitHub
parent 91222e1e44
commit 5f8d1428d5
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1 changed files with 4 additions and 2 deletions
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6
core/iwasm/interpreter/wasm_runtime.c
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@ -1333,12 +1333,14 @@ wasm_instantiate(WASMModule *module, bool is_sub_inst, uint32 stack_size,
goto fail; goto fail;
} }
data_seg->base_offset.u.i32 = base_offset =
globals[data_seg->base_offset.u.global_index].initial_value.i32; globals[data_seg->base_offset.u.global_index].initial_value.i32;
} }
else {
base_offset = (uint32)data_seg->base_offset.u.i32;
}
/* check offset */ /* check offset */
base_offset = (uint32)data_seg->base_offset.u.i32;
if (base_offset > memory_size) { if (base_offset > memory_size) {
LOG_DEBUG("base_offset(%d) > memory_size(%d)", base_offset, LOG_DEBUG("base_offset(%d) > memory_size(%d)", base_offset,
memory_size); memory_size);