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kernel/x86_64: Avoid kernel panics when a page fault occurs in a userspace thread

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This commit is contained in:
apio 2023-03-07 21:06:04 +01:00
parent ca85a69442
commit e30eec4213
Signed by: apio
GPG Key ID: B8A7D06E42258954
1 changed files with 8 additions and 1 deletions
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9
kernel/src/arch/x86_64/CPU.cpp
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@ -31,7 +31,7 @@ void FPData::save()
void FPData::restore() void FPData::restore()
{ {
if(!m_already_saved) return; if (!m_already_saved) return;
asm volatile("fxrstor (%0)" : : "r"(m_data)); asm volatile("fxrstor (%0)" : : "r"(m_data));
} }
@ -64,6 +64,13 @@ void decode_page_fault_error_code(u64 code)
decode_page_fault_error_code(regs->error); decode_page_fault_error_code(regs->error);
if (!is_in_kernel(regs))
{
// FIXME: Kill this process with SIGSEGV once we have signals and all that.
kerrorln("Current task %zu was terminated because of a page fault", Scheduler::current()->id);
kernel_exit();
}
CPU::print_stack_trace_at(regs); CPU::print_stack_trace_at(regs);
CPU::efficient_halt(); CPU::efficient_halt();