From b10b5587d10d8315e7cad838efbdff75bf6aa1b2 Mon Sep 17 00:00:00 2001
From: Will Hawkins <hawkinsw@obs.cr>
Date: Sat, 27 Apr 2024 21:50:11 -0400
Subject: [PATCH] fixup! [WIP] Make the JIT'd code completely portable.

Fixed error where jit_error was not initialized and correct condition using wrong operator.
---
 vm/ubpf_jit_arm64.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/vm/ubpf_jit_arm64.c b/vm/ubpf_jit_arm64.c
index 1fa3355e..3ce6622a 100644
--- a/vm/ubpf_jit_arm64.c
+++ b/vm/ubpf_jit_arm64.c
@@ -181,7 +181,7 @@ static uint32_t inline align_to(uint32_t amount, uint64_t boundary)
 static void
 emit_bytes(struct jit_state* state, void* data, uint32_t len)
 {
-    if (!(len <= state->size || state->offset <= state->size - len)) {
+    if (!(len <= state->size && state->offset <= state->size - len)) {
         state->jit_error = NotEnoughSpace;
         return;
     }
@@ -1440,6 +1440,8 @@ ubpf_translate_arm64(struct ubpf_vm* vm, uint8_t* buffer, size_t* size)
     state.loads = calloc(UBPF_MAX_INSTS, sizeof(state.loads[0]));
     state.num_jumps = 0;
     state.num_loads = 0;
+    state.jit_error = NoError;
+
 
     if (!state.pc_locs || !state.jumps) {
         compile_result.errmsg = ubpf_error("Out of memory");