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ldr_ro: Add error check for memory allocation failure

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This commit is contained in:
Zach Hilman 2018-11-17 21:40:17 -05:00
parent c0a9abc3e1
commit 51af996854
4 changed files with 27 additions and 13 deletions
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27
src/core/hle/service/ldr/ldr.cpp
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@ -18,6 +18,7 @@ namespace Service::LDR {
namespace ErrCodes {
enum {
InvalidMemoryState = 51,
InvalidNRO = 52,
InvalidNRR = 53,
MissingNRRHash = 54,
@ -32,6 +33,7 @@ enum {
};
}
constexpr ResultCode ERROR_INVALID_MEMORY_STATE(ErrorModule::Loader, ErrCodes::InvalidMemoryState);
constexpr ResultCode ERROR_INVALID_NRO(ErrorModule::Loader, ErrCodes::InvalidNRO);
constexpr ResultCode ERROR_INVALID_NRR(ErrorModule::Loader, ErrCodes::InvalidNRR);
constexpr ResultCode ERROR_MISSING_NRR_HASH(ErrorModule::Loader, ErrCodes::MissingNRRHash);
@ -120,7 +122,7 @@ public:
return;
}
if (nro.size() >= MAXIMUM_LOADED_RO) {
if (nrr.size() >= MAXIMUM_LOADED_RO) {
LOG_ERROR(Service_LDR, "Loading new NRR would exceed the maximum number of loaded NRRs "
"(0x40)! Failing...");
IPC::ResponseBuilder rb{ctx, 2};
@ -178,10 +180,13 @@ public:
}
std::vector<SHA256Hash> hashes;
// Copy all hashes in the NRR (specified by hash count/hash offset) into vector.
for (std::size_t i = header.hash_offset;
i < (header.hash_offset + (header.hash_count << 5)); i += 8) {
hashes.emplace_back();
std::memcpy(hashes.back().data(), nrr_data.data() + i, sizeof(SHA256Hash));
i < (header.hash_offset + (header.hash_count * sizeof(SHA256Hash))); i += 8) {
SHA256Hash hash;
std::memcpy(hash.data(), nrr_data.data() + i, sizeof(SHA256Hash));
hashes.emplace_back(hash);
}
nrr.insert_or_assign(nrr_addr, std::move(hashes));
@ -258,8 +263,8 @@ public:
// NRO Size or BSS Size is zero or causes overflow
const auto nro_size_valid =
nro_size != 0 && nro_addr + nro_size > nro_addr && Common::Is4KBAligned(nro_size);
const auto bss_size_valid = std::numeric_limits<u64>::max() - nro_size >= bss_size &&
(bss_size == 0 || bss_addr + bss_size > bss_addr);
const auto bss_size_valid =
nro_size + bss_size >= nro_size && (bss_size == 0 || bss_addr + bss_size > bss_addr);
if (!nro_size_valid || !bss_size_valid) {
LOG_ERROR(Service_LDR,
@ -313,7 +318,15 @@ public:
auto& vm_manager = process->VMManager();
auto map_address = vm_manager.FindFreeRegion(nro_size + bss_size);
ASSERT(map_address.Succeeded());
if (!map_address.Succeeded() ||
*map_address + nro_size + bss_size > vm_manager.GetAddressSpaceEndAddress()) {
LOG_ERROR(Service_LDR,
"General error while allocation memory or no available memory to allocate!");
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(ERROR_INVALID_MEMORY_STATE);
return;
}
ASSERT(process->MirrorMemory(*map_address, nro_addr, nro_size,
Kernel::MemoryState::ModuleCodeStatic) == RESULT_SUCCESS);