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9d7cd9b864
PR-URL: https://github.com/nodejs/node/pull/54077 Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Richard Lau <rlau@redhat.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com> Reviewed-By: Marco Ippolito <marcoippolito54@gmail.com>
73 lines
2.4 KiB
JavaScript
73 lines
2.4 KiB
JavaScript
// Copyright 2024 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --sandbox-testing
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d8.file.execute('test/mjsunit/wasm/wasm-module-builder.js');
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// module 0
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let builder = new WasmModuleBuilder();
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let $struct = builder.addStruct([makeField(kWasmI64, true)]);
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let $sig0 = builder.addType(makeSig([wasmRefType($struct), kWasmI64], []));
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let $sig1_0 = builder.addType(makeSig([kWasmI64, kWasmI64], []));
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let $writer = builder.addFunction("writer", $sig0)
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.exportFunc()
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.addBody([
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kExprLocalGet, 0,
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kExprLocalGet, 1,
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kGCPrefix, kExprStructSet, $struct, 0,
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]);
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let $placeholder = builder.addFunction("placeholder", $sig1_0).addBody([]);
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let $t0 = builder
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.addTable(wasmRefType($sig0), 1, 1, [kExprRefFunc, $writer.index])
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.exportAs('table0');
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let $t1 = builder
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.addTable(wasmRefType($sig1_0), 1, 1, [kExprRefFunc, $placeholder.index])
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.exportAs('table1');
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let instance0 = builder.instantiate();
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let { writer, table0, table1 } = instance0.exports;
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// module 1
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builder = new WasmModuleBuilder();
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// $sig_1_1 and $sig1_0 are canonicalized to the same index.
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let $sig1_1 = builder.addType(makeSig([kWasmI64, kWasmI64], []));
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let $boom = builder.addFunction("boom", $sig1_1)
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.exportFunc()
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.addBody([
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kExprLocalGet, 1,
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kExprLocalGet, 0,
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kExprI32Const, 0,
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kExprCallIndirect, $sig1_1, 0,
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]);
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let $t_imp =
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builder.addImportedTable('import', 'table', 1, 1, wasmRefType($sig1_1));
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// Prepare corruption utilities.
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const kHeapObjectTag = 1;
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const kWasmTableEntriesOffset = 12;
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let memory = new DataView(new Sandbox.MemoryView(0, 0x100000000));
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function getPtr(obj) {
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return Sandbox.getAddressOf(obj) + kHeapObjectTag;
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}
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function getField(obj, offset) {
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return memory.getUint32(obj + offset - kHeapObjectTag, true);
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}
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function setField(obj, offset, value) {
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memory.setUint32(obj + offset - kHeapObjectTag, value, true);
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}
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// Set table1.entries[0] = table0.entries[0].
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let t0_entries = getField(getPtr(table0), kWasmTableEntriesOffset);
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let t0_entry = getField(t0_entries, 8);
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let t1_entries = getField(getPtr(table1), kWasmTableEntriesOffset);
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setField(t1_entries, 8, t0_entry);
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// All checks pass - table type already equivalent, but entry replaced.
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let instance1 = builder.instantiate({'import': {'table': table1}});
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instance1.exports.boom(BigInt(Sandbox.targetPage) - 0x7n, 42n);
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assertUnreachable("Process should have been killed.");
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