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Kernel: Make symbolication callable from kmalloc().

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It wasn't possible to symbolicate from kmalloc(), since symbolication would
call kmalloc(). :^)
This commit is contained in:
Andreas Kling 2019-04-15 23:50:25 +02:00
parent ae0dc22716
commit fa89446cb6
1 changed files with 12 additions and 7 deletions
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19
Kernel/KSyms.cpp
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@ -85,27 +85,32 @@ static void load_ksyms_from_data(const ByteBuffer& buffer)
dword address;
const KSym* ksym;
};
Vector<RecognizedSymbol> recognized_symbols;
int max_recognized_symbol_count = 256;
RecognizedSymbol recognized_symbols[max_recognized_symbol_count];
int recognized_symbol_count = 0;
if (use_ksyms) {
for (dword* stack_ptr = (dword*)ebp; current->process().validate_read_from_kernel(LinearAddress((dword)stack_ptr)); stack_ptr = (dword*)*stack_ptr) {
dword retaddr = stack_ptr[1];
if (auto* ksym = ksymbolicate(retaddr))
recognized_symbols.append({ retaddr, ksym });
recognized_symbols[recognized_symbol_count++] = { retaddr, ksym };
}
} else{
} else {
for (dword* stack_ptr = (dword*)ebp; current->process().validate_read_from_kernel(LinearAddress((dword)stack_ptr)); stack_ptr = (dword*)*stack_ptr) {
dword retaddr = stack_ptr[1];
kprintf("%x (next: %x)\n", retaddr, stack_ptr ? (dword*)*stack_ptr : 0);
dbgprintf("%x (next: %x)\n", retaddr, stack_ptr ? (dword*)*stack_ptr : 0);
}
return;
}
ASSERT(recognized_symbol_count < max_recognized_symbol_count);
size_t bytes_needed = 0;
for (auto& symbol : recognized_symbols) {
for (int i = 0; i < recognized_symbol_count; ++i) {
auto& symbol = recognized_symbols[i];
bytes_needed += strlen(symbol.ksym->name) + 8 + 16;
}
for (auto& symbol : recognized_symbols) {
for (int i = 0; i < recognized_symbol_count; ++i) {
auto& symbol = recognized_symbols[i];
unsigned offset = symbol.address - symbol.ksym->address;
kprintf("%p %s +%u\n", symbol.address, symbol.ksym->name, offset);
dbgprintf("%p %s +%u\n", symbol.address, symbol.ksym->name, offset);
}
}