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This repo contains CoreRT, an experimental .NET Core runtime optimized for AOT (ahead of time compilation) scenarios, with the accompanying compiler toolchain.

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Wasm: memory corruption

yowl opened this issue · comments

commented

There is something odd still, perhaps around allocating objects.

        var a = new Exception[] { new ArgumentException(), null, null};
        PrintLine(a.Length.ToString());

This prints 12 when it should be 3. This code

        var a = new Exception[] { null, null, null};
        PrintLine(a.Length.ToString());

Prints 3 correctly.

commented

There's also this intermittent crash which might be related

Assertion failed: ((CObjectHeader*)p)->IsFree(), at: E:/GitHub/corert/src/Native/Runtime/Portable/../../gc/gc.cpp,3806,unused_array_size
exception thrown: RuntimeError: abort(Assertion failed: ((CObjectHeader*)p)->IsFree(), at: E:/GitHub/corert/src/Native/Runtime/Portable/../../gc/gc.cpp,3806,unused_array_size) at Error
    at jsStackTrace (E:\GitHub\corert\tests\src\Simple\HelloWasm\bin\Debug\wasm\native\HelloWasm.js:2146:17)
    at stackTrace (E:\GitHub\corert\tests\src\Simple\HelloWasm\bin\Debug\wasm\native\HelloWasm.js:2163:16)
    at abort (E:\GitHub\corert\tests\src\Simple\HelloWasm\bin\Debug\wasm\native\HelloWasm.js:1907:44)
    at ___assert_fail (E:\GitHub\corert\tests\src\Simple\HelloWasm\bin\Debug\wasm\native\HelloWasm.js:2637:7)
    at WKS::gc_heap::soh_try_fit(int, unsigned long, alloc_context*, unsigned int, int, int*, int*) (wasm-function[21522]:0x100a9f7)
    at WKS::gc_heap::allocate_soh(int, unsigned long, alloc_context*, unsigned int, int) (wasm-function[21524]:0x100bf22)
    at WKS::gc_heap::try_allocate_more_space(alloc_context*, unsigned long, unsigned int, int) (wasm-function[21537]:0x10125e8)
    at WKS::gc_heap::allocate_more_space(alloc_context*, unsigned long, unsigned int, int) (wasm-function[21540]:0x1012d6a)
    at WKS::GCHeap::Alloc(gc_alloc_context*, unsigned long, unsigned int) (wasm-function[21884]:0x10a84dd)
    at RhpGcAlloc (wasm-function[20535]:0xf9fd04),RuntimeError: abort(Assertion failed: ((CObjectHeader*)p)->IsFree(), at: E:/GitHub/corert/src/Native/Runtime/Portable/../../gc/gc.cpp,3806,unused_array_size) at Error
    at jsStackTrace (E:\GitHub\corert\tests\src\Simple\HelloWasm\bin\Debug\wasm\native\HelloWasm.js:2146:17)
    at stackTrace (E:\GitHub\corert\tests\src\Simple\HelloWasm\bin\Debug\wasm\native\HelloWasm.js:2163:16)
    at abort (E:\GitHub\corert\tests\src\Simple\HelloWasm\bin\Debug\wasm\native\HelloWasm.js:1907:44)
    at ___assert_fail (E:\GitHub\corert\tests\src\Simple\HelloWasm\bin\Debug\wasm\native\HelloWasm.js:2637:7)
    at WKS::gc_heap::soh_try_fit(int, unsigned long, alloc_context*, unsigned int, int, int*, int*) (wasm-function[21522]:0x100a9f7)
    at WKS::gc_heap::allocate_soh(int, unsigned long, alloc_context*, unsigned int, int) (wasm-function[21524]:0x100bf22)
    at WKS::gc_heap::try_allocate_more_space(alloc_context*, unsigned long, unsigned int, int) (wasm-function[21537]:0x10125e8)
    at WKS::gc_heap::allocate_more_space(alloc_context*, unsigned long, unsigned int, int) (wasm-function[21540]:0x1012d6a)
    at WKS::GCHeap::Alloc(gc_alloc_context*, unsigned long, unsigned int) (wasm-function[21884]:0x10a84dd)
    at RhpGcAlloc (wasm-function[20535]:0xf9fd04)
    at abort (E:\GitHub\corert\tests\src\Simple\HelloWasm\bin\Debug\wasm\native\HelloWasm.js:1913:11)
    at ___assert_fail (E:\GitHub\corert\tests\src\Simple\HelloWasm\bin\Debug\wasm\native\HelloWasm.js:2637:7)
    at WKS::gc_heap::soh_try_fit(int, unsigned long, alloc_context*, unsigned int, int, int*, int*) (wasm-function[21522]:0x100a9f7)
    at WKS::gc_heap::allocate_soh(int, unsigned long, alloc_context*, unsigned int, int) (wasm-function[21524]:0x100bf22)
    at WKS::gc_heap::try_allocate_more_space(alloc_context*, unsigned long, unsigned int, int) (wasm-function[21537]:0x10125e8)
    at WKS::gc_heap::allocate_more_space(alloc_context*, unsigned long, unsigned int, int) (wasm-function[21540]:0x1012d6a)
    at WKS::GCHeap::Alloc(gc_alloc_context*, unsigned long, unsigned int) (wasm-function[21884]:0x10a84dd)
    at RhpGcAlloc (wasm-function[20535]:0xf9fd04)
    at RhpNewArray (wasm-function[20696]:0xfa9a36)
    at S_P_CoreLib_System_Diagnostics_StackTrace__InitializeForCurrentThread (wasm-function[842]:0x7aa15)