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/*
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <Kernel/Arch/CPU.h>
#include <Kernel/Arch/RegisterState.h>
#include <Kernel/Panic.h>
#include <Kernel/Tasks/Process.h>
#include <Kernel/Tasks/Thread.h>
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);
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)) {
current_thread->send_urgent_signal_to_self(signal);
return;
}
auto& process = current_thread->process();
// If a process crashed while inspecting another process,
// make sure we switch back to the right page tables.
Memory::MemoryManager::enter_process_address_space(process);
dmesgln("CRASH: CPU #{} {} in {}", Processor::current_id(), description, regs.previous_mode() == ExecutionMode::Kernel ? "kernel"sv : "userspace"sv);
dump_registers(regs);
if (crashed_in_kernel) {
process.address_space().with([&](auto& space) { space->dump_regions(); });
PANIC("Crash in kernel");
}
process.crash(signal, { regs }, out_of_memory);
}
}
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