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Kernel: Ensure that CommandLine is initialized before choosing PanicMode

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If the kernel commandline is not initialized, just halt everything.
This commit is contained in:
Liav A 2022-01-21 11:36:32 +02:00 committed by Idan Horowitz
parent 0adee378fd
commit d67c70d043
Notes: sideshowbarker 2024-07-17 20:31:11 +09:00 
Author: https://github.com/supercomputer7
Commit: https://github.com/SerenityOS/serenity/commit/d67c70d0435
Pull-request: https://github.com/SerenityOS/serenity/pull/12040
Reviewed-by: https://github.com/IdanHo
3 changed files with 8 additions and 0 deletions
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5
Kernel/CommandLine.cpp
View File

@ -27,6 +27,11 @@ UNMAP_AFTER_INIT void CommandLine::early_initialize(const char* cmd_line)
s_cmd_line[length] = '\0';
}
bool CommandLine::was_initialized()
{
return s_the != nullptr;
}
const CommandLine& kernel_command_line()
{
VERIFY(s_the);

1
Kernel/CommandLine.h
View File

@ -45,6 +45,7 @@ class CommandLine {
public:
static void early_initialize(const char* cmd_line);
static void initialize();
static bool was_initialized();
enum class Validate {
Yes,

2
Kernel/Panic.cpp
View File

@ -33,6 +33,8 @@ void __panic(const char* file, unsigned int line, const char* function)
critical_dmesgln("at {}:{} in {}", file, line, function);
dump_backtrace(PrintToScreen::Yes);
if (!CommandLine::was_initialized())
Processor::halt();
switch (kernel_command_line().panic_mode()) {
case PanicMode::Shutdown:
__shutdown();