christoph/wamr
1
Fork 0
Code Releases Activity

Add fast interpreter offset overflow check (#1076)

Browse Source 
* check fast interpreter offset overflow
This commit is contained in:
Xu Jun
2022-04-07 21:07:32 +08:00
committed by GitHub
parent ea63ba4bd0
commit fd9cce0eef
2 changed files with 21 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
core/iwasm/interpreter/wasm_mini_loader.c
View File

@ -3844,8 +3844,10 @@ wasm_loader_push_frame_offset(WASMLoaderContext *ctx, uint8 type,
emit_operand(ctx, ctx->dynamic_offset);
*(ctx->frame_offset)++ = ctx->dynamic_offset;
ctx->dynamic_offset++;
if (ctx->dynamic_offset > ctx->max_dynamic_offset)
if (ctx->dynamic_offset > ctx->max_dynamic_offset) {
ctx->max_dynamic_offset = ctx->dynamic_offset;
bh_assert(ctx->max_dynamic_offset < INT16_MAX);
}
}
if (is_32bit_type(type))
@ -3859,8 +3861,10 @@ wasm_loader_push_frame_offset(WASMLoaderContext *ctx, uint8 type,
ctx->frame_offset++;
if (!disable_emit) {
ctx->dynamic_offset++;
if (ctx->dynamic_offset > ctx->max_dynamic_offset)
if (ctx->dynamic_offset > ctx->max_dynamic_offset) {
ctx->max_dynamic_offset = ctx->dynamic_offset;
bh_assert(ctx->max_dynamic_offset < INT16_MAX);
}
}
return true;
}