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Kernel+LibELF: Stop doing ELF symbolication in the kernel

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Now that the CrashDaemon symbolicates crashes in userspace, let's take
this one step further and stop trying to symbolicate userspace programs
in the kernel at all.
This commit is contained in:
Andreas Kling
2020-12-25 00:59:15 +01:00
parent edf01803cd
commit d7ad082afa
7 changed files with 11 additions and 98 deletions
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20
Kernel/Process.cpp
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@@ -52,7 +52,6 @@
#include <Kernel/VM/SharedInodeVMObject.h>
#include <LibC/errno_numbers.h>
#include <LibC/limits.h>
#include <LibELF/Loader.h>
//#define DEBUG_IO
//#define DEBUG_POLL_SELECT
@@ -462,8 +461,6 @@ void Process::crash(int signal, u32 eip, bool out_of_memory)
if (eip >= 0xc0000000 && g_kernel_symbols_available) {
auto* symbol = symbolicate_kernel_address(eip);
dbg() << "\033[31;1m" << String::format("%p", eip) << " " << (symbol ? demangle(symbol->name) : "(k?)") << " +" << (symbol ? eip - symbol->address : 0) << "\033[0m\n";
} else if (auto elf_bundle = this->elf_bundle()) {
dbg() << "\033[31;1m" << String::format("%p", eip) << " " << elf_bundle->elf_loader->symbolicate(eip) << "\033[0m\n";
} else {
dbg() << "\033[31;1m" << String::format("%p", eip) << " (?)\033[0m\n";
}
@@ -891,23 +888,6 @@ void Process::set_tty(TTY* tty)
m_tty = tty;
}
OwnPtr<Process::ELFBundle> Process::elf_bundle() const
{
if (!m_executable)
return nullptr;
auto bundle = make<ELFBundle>();
if (!m_executable->inode().shared_vmobject()) {
return nullptr;
}
ASSERT(m_executable->inode().shared_vmobject());
auto& vmobject = *m_executable->inode().shared_vmobject();
bundle->region = MM.allocate_kernel_region_with_vmobject(const_cast<SharedInodeVMObject&>(vmobject), vmobject.size(), "ELF bundle", Region::Access::Read);
if (!bundle->region)
return nullptr;
bundle->elf_loader = ELF::Loader::create(bundle->region->vaddr().as_ptr(), bundle->region->size());
return bundle;
}
void Process::start_tracing_from(ProcessID tracer)
{
m_tracer = ThreadTracer::create(tracer);