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Lib.Kernel: Check to ensure heap_api is valid before running heap mallocs in TlsGetAddr (#4709)

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* Check to ensure heap_api is valid before running heap mallocs in TlsGetAddr

* Obligatory clang commit

* Linux
This commit is contained in:
Stephen Miller
2026-07-14 11:21:38 -05:00
committed by GitHub
parent 6d37f61a4d
commit c07e757ddb
1 changed files with 6 additions and 1 deletions
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7
src/core/linker.cpp
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@@ -459,7 +459,12 @@ void* Linker::TlsGetAddr(u64 module_index, u64 offset) {
if (!addr) {
// Module was just loaded by above code. Allocate TLS block for it.
const u32 init_image_size = module->tls.init_image_size;
u8* dest = reinterpret_cast<u8*>(heap_api->heap_malloc(module->tls.image_size));
u8* dest{};
if (heap_api && heap_api->heap_malloc) {
dest = reinterpret_cast<u8*>(heap_api->heap_malloc(module->tls.image_size));
} else {
dest = reinterpret_cast<u8*>(std::malloc(module->tls.image_size));
}
const u8* src = reinterpret_cast<const u8*>(module->tls.image_virtual_addr);
std::memcpy(dest, src, init_image_size);
std::memset(dest + init_image_size, 0, module->tls.image_size - init_image_size);