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https://github.com/Atmosphere-NX/Atmosphere
synced 2024-12-22 20:31:14 +00:00
fatal: prevent crash on fatal from currently-debugged process
This commit is contained in:
parent
bcc7eed037
commit
16e2f46aed
1 changed files with 11 additions and 10 deletions
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@ -170,17 +170,18 @@ namespace ams::fatal::srv {
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void TryCollectDebugInformation(ThrowContext *ctx, os::ProcessId process_id) {
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void TryCollectDebugInformation(ThrowContext *ctx, os::ProcessId process_id) {
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/* Try to debug the process. This may fail, if we called into ourself. */
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/* Try to debug the process. This may fail, if we called into ourself. */
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os::ManagedHandle debug_handle;
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Handle debug_handle;
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if (R_FAILED(svcDebugActiveProcess(debug_handle.GetPointer(), static_cast<u64>(process_id)))) {
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if (R_FAILED(svcDebugActiveProcess(std::addressof(debug_handle), static_cast<u64>(process_id)))) {
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return;
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return;
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}
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}
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ON_SCOPE_EXIT { R_ABORT_UNLESS(svc::CloseHandle(debug_handle)); };
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/* First things first, check if process is 64 bits, and get list of thread infos. */
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/* First things first, check if process is 64 bits, and get list of thread infos. */
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std::unordered_map<u64, u64> thread_id_to_tls;
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std::unordered_map<u64, u64> thread_id_to_tls;
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{
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{
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bool got_create_process = false;
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bool got_create_process = false;
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svc::DebugEventInfo d;
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svc::DebugEventInfo d;
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while (R_SUCCEEDED(svcGetDebugEvent(reinterpret_cast<u8 *>(&d), debug_handle.Get()))) {
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while (R_SUCCEEDED(svcGetDebugEvent(reinterpret_cast<u8 *>(&d), debug_handle))) {
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switch (d.type) {
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switch (d.type) {
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case svc::DebugEvent_CreateProcess:
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case svc::DebugEvent_CreateProcess:
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ctx->cpu_ctx.architecture = (d.info.create_process.flags & 1) ? CpuContext::Architecture_Aarch64 : CpuContext::Architecture_Aarch32;
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ctx->cpu_ctx.architecture = (d.info.create_process.flags & 1) ? CpuContext::Architecture_Aarch64 : CpuContext::Architecture_Aarch32;
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@ -216,7 +217,7 @@ namespace ams::fatal::srv {
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/* We start by trying to get a list of threads. */
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/* We start by trying to get a list of threads. */
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s32 thread_count;
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s32 thread_count;
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u64 thread_ids[0x60];
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u64 thread_ids[0x60];
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if (R_FAILED(svc::GetThreadList(&thread_count, thread_ids, 0x60, debug_handle.Get()))) {
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if (R_FAILED(svc::GetThreadList(&thread_count, thread_ids, 0x60, debug_handle))) {
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return;
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return;
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}
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}
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@ -227,7 +228,7 @@ namespace ams::fatal::srv {
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continue;
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continue;
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}
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}
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if (IsThreadFatalCaller(ctx->result, debug_handle.Get(), cur_thread_id, thread_id_to_tls[cur_thread_id], &thread_ctx)) {
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if (IsThreadFatalCaller(ctx->result, debug_handle, cur_thread_id, thread_id_to_tls[cur_thread_id], &thread_ctx)) {
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thread_id = cur_thread_id;
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thread_id = cur_thread_id;
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thread_tls = thread_id_to_tls[thread_id];
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thread_tls = thread_id_to_tls[thread_id];
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found_fatal_caller = true;
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found_fatal_caller = true;
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@ -238,7 +239,7 @@ namespace ams::fatal::srv {
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return;
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return;
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}
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}
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}
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}
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if (R_FAILED(svcGetDebugThreadContext(&thread_ctx, debug_handle.Get(), thread_id, svc::ThreadContextFlag_All))) {
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if (R_FAILED(svcGetDebugThreadContext(&thread_ctx, debug_handle, thread_id, svc::ThreadContextFlag_All))) {
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return;
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return;
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}
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}
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@ -259,7 +260,7 @@ namespace ams::fatal::srv {
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/* Read a new frame. */
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/* Read a new frame. */
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StackFrame cur_frame = {};
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StackFrame cur_frame = {};
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if (R_FAILED(svcReadDebugProcessMemory(&cur_frame, debug_handle.Get(), cur_fp, sizeof(StackFrame)))) {
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if (R_FAILED(svcReadDebugProcessMemory(&cur_frame, debug_handle, cur_fp, sizeof(StackFrame)))) {
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break;
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break;
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}
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}
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@ -271,7 +272,7 @@ namespace ams::fatal::srv {
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/* Try to read up to 0x100 of stack. */
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/* Try to read up to 0x100 of stack. */
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ctx->stack_dump_base = 0;
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ctx->stack_dump_base = 0;
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for (size_t sz = 0x100; sz > 0; sz -= 0x10) {
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for (size_t sz = 0x100; sz > 0; sz -= 0x10) {
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if (R_SUCCEEDED(svcReadDebugProcessMemory(ctx->stack_dump, debug_handle.Get(), thread_ctx.sp, sz))) {
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if (R_SUCCEEDED(svcReadDebugProcessMemory(ctx->stack_dump, debug_handle, thread_ctx.sp, sz))) {
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ctx->stack_dump_base = thread_ctx.sp;
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ctx->stack_dump_base = thread_ctx.sp;
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ctx->stack_dump_size = sz;
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ctx->stack_dump_size = sz;
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break;
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break;
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@ -279,7 +280,7 @@ namespace ams::fatal::srv {
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}
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}
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/* Try to read the first 0x100 of TLS. */
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/* Try to read the first 0x100 of TLS. */
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if (R_SUCCEEDED(svcReadDebugProcessMemory(ctx->tls_dump, debug_handle.Get(), thread_tls, sizeof(ctx->tls_dump)))) {
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if (R_SUCCEEDED(svcReadDebugProcessMemory(ctx->tls_dump, debug_handle, thread_tls, sizeof(ctx->tls_dump)))) {
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ctx->tls_address = thread_tls;
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ctx->tls_address = thread_tls;
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} else {
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} else {
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ctx->tls_address = 0;
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ctx->tls_address = 0;
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@ -287,7 +288,7 @@ namespace ams::fatal::srv {
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}
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}
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/* Parse the base address. */
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/* Parse the base address. */
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ctx->cpu_ctx.aarch64_ctx.SetBaseAddress(GetBaseAddress(ctx, &thread_ctx, debug_handle.Get()));
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ctx->cpu_ctx.aarch64_ctx.SetBaseAddress(GetBaseAddress(ctx, &thread_ctx, debug_handle));
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}
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}
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}
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}
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