JIT Sleep: ExecContHelper tries to jump to null address.

[AGraber]

Seems that jump_lookup_label_ returns 0 and it tries to use that

samp-plugin-jit/src/amxjit/compiler_impl.cpp

Lines 1775 to 1779 in a704bcb

	asm_.call(jump_lookup_label_);
	asm_.mov(edx, eax); // address
	asm_.mov(eax, dword_ptr(esi, offsetof(AMX, pri)));
	asm_.mov(ecx, dword_ptr(esi, offsetof(AMX, alt)));
	asm_.jmp(edx);

Server crashes after this

[AGraber]

Seems that the 0 comes from the GetJITInstrPtr function. This check fails and makes it return 0:

samp-plugin-jit/src/amxjit/compiler_impl.cpp

Lines 123 to 127 in 08ed8e6

	if (result != last && result->address == address) {
	return result->ptr;
	}
	return 0;
	}

By the way, there's a previous ExecContHelper that gets executed seemingly fine, the 2nd one is the one that crashes.

[Zeex]

It looks like some code tried to jump to an invalid AMX code address, i.e. address that does not directly match any native/JIT instruction recorded in the instr_table.