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Kernel: Make CrashHandler more useful before init_stage2

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Display some helpful information about crashes even before the first
process is started.
This commit is contained in:
Sönke Holz 2023-12-08 00:03:31 +01:00 committed by Andreas Kling
parent 466153e680
commit e4019ba9dc
1 changed files with 11 additions and 2 deletions
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13
Kernel/Tasks/CrashHandler.cpp
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@ -16,8 +16,17 @@ namespace Kernel {
void handle_crash(Kernel::RegisterState const& regs, char const* description, int signal, bool out_of_memory)
{
auto* current_thread = Thread::current();
if (!current_thread)
PANIC("{} with !Thread::current()", description);
if (!current_thread) {
VERIFY(regs.previous_mode() == ExecutionMode::Kernel);
dbgln("CRASH: CPU #{} {} in kernel", Processor::current_id(), description);
dump_registers(regs);
if (Memory::MemoryManager::is_initialized())
MM.dump_kernel_regions();
PANIC("Crash in kernel with !Thread::current()");
}
auto crashed_in_kernel = regs.previous_mode() == ExecutionMode::Kernel;
if (!crashed_in_kernel && current_thread->has_signal_handler(signal) && !current_thread->should_ignore_signal(signal) && !current_thread->is_signal_masked(signal)) {