From 8bedc80cafee0bee0c93eb7290a9967f1dbbffa4 Mon Sep 17 00:00:00 2001
From: Drew Galbraith <dgalbraith33@gmail.com>
Date: Fri, 24 Nov 2023 15:04:19 -0800
Subject: [PATCH] [Zion] Add a max depth to stack unwinds.

---
 zion/common/stack_unwind.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/zion/common/stack_unwind.cpp b/zion/common/stack_unwind.cpp
index 4bdbc10..1229b8a 100644
--- a/zion/common/stack_unwind.cpp
+++ b/zion/common/stack_unwind.cpp
@@ -9,12 +9,14 @@ bool IsValid(uint64_t* rbp) { return rbp && *rbp != kStackBaseSentinel; }
 }  // namespace
 
 void StackUnwind(uint64_t rbp) {
+  uint64_t depth_limit = 10;
   dbgln("-- Begin Stack --");
   uint64_t* rbp_ptr = reinterpret_cast<uint64_t*>(rbp);
-  while (IsValid(rbp_ptr)) {
+  while (IsValid(rbp_ptr) && depth_limit > 0) {
     uint64_t rip = *(rbp_ptr + 1);
     dbgln("RIP: {x}", rip);
     rbp_ptr = reinterpret_cast<uint64_t*>(*rbp_ptr);
+    depth_limit--;
   }
   dbgln("-- End Stack --");
 }