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54 lines
1.7 KiB
C++
54 lines
1.7 KiB
C++
/*
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* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <Kernel/Arch/CPU.h>
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#include <Kernel/Arch/RegisterState.h>
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#include <Kernel/Library/Panic.h>
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#include <Kernel/Tasks/Process.h>
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#include <Kernel/Tasks/Thread.h>
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namespace Kernel {
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void handle_crash(Kernel::RegisterState const& regs, char const* description, int signal, bool out_of_memory)
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{
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auto* current_thread = Thread::current();
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if (!current_thread) {
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VERIFY(regs.previous_mode() == ExecutionMode::Kernel);
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dbgln("CRASH: CPU #{} {} in kernel", Processor::current_id(), description);
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dump_registers(regs);
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if (Memory::MemoryManager::is_initialized())
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MM.dump_kernel_regions();
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PANIC("Crash in kernel with !Thread::current()");
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}
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auto crashed_in_kernel = regs.previous_mode() == ExecutionMode::Kernel;
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if (!crashed_in_kernel && current_thread->has_signal_handler(signal) && !current_thread->should_ignore_signal(signal) && !current_thread->is_signal_masked(signal)) {
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current_thread->send_urgent_signal_to_self(signal);
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return;
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}
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auto& process = current_thread->process();
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// If a process crashed while inspecting another process,
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// make sure we switch back to the right page tables.
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Memory::MemoryManager::enter_process_address_space(process);
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dmesgln("CRASH: CPU #{} {} in {}", Processor::current_id(), description, regs.previous_mode() == ExecutionMode::Kernel ? "kernel"sv : "userspace"sv);
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dump_registers(regs);
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if (crashed_in_kernel) {
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process.address_space().with([&](auto& space) { space->dump_regions(); });
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PANIC("Crash in kernel");
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}
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process.crash(signal, { regs }, out_of_memory);
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}
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}
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