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0718afa773
There are certain checks that we should skip if the system is crashing. The system can avoid stack overflow during crash, or even triple faulting while while handling issues that can causes recursive panics or aborts.
40 lines
1,013 B
C++
40 lines
1,013 B
C++
/*
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* Copyright (c) 2018-2020, 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 <AK/Assertions.h>
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#include <Kernel/Arch/x86/CPU.h>
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#include <Kernel/Panic.h>
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#include <Kernel/Process.h>
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void __assertion_failed(const char* msg, const char* file, unsigned line, const char* func)
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{
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asm volatile("cli");
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critical_dmesgln("ASSERTION FAILED: {}", msg);
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critical_dmesgln("{}:{} in {}", file, line, func);
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abort();
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}
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[[noreturn]] void abort()
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{
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// Avoid lock ranking checks on crashing paths, just try to get some debugging messages out.
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auto thread = Thread::current();
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if (thread)
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thread->set_crashing();
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// Switch back to the current process's page tables if there are any.
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// Otherwise stack walking will be a disaster.
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if (Process::has_current())
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MM.enter_process_address_space(Process::current());
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PANIC("Aborted");
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}
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[[noreturn]] void _abort()
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{
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asm volatile("ud2");
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__builtin_unreachable();
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}
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