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46 lines
1.3 KiB
C++
46 lines
1.3 KiB
C++
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/*
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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/Panic.h>
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#include <Kernel/Process.h>
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#include <Kernel/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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PANIC("{} with !Thread::current()", description);
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auto crashed_in_kernel = (regs.cs & 3) == 0;
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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 ring {}", Processor::current_id(), description, (regs.cs & 3));
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dump_registers(regs);
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if (crashed_in_kernel) {
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process.address_space().dump_regions();
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PANIC("Crash in ring 0");
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}
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process.crash(signal, regs.ip(), out_of_memory);
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}
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}
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