From 806087d4a1fa0237aa1d57f177432cfabc83156e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Maciej=20=C5=BBenczykowski?= <maze@google.com>
Date: Mon, 4 Aug 2025 11:50:41 -0700
Subject: [PATCH] NetBpfLoad: make 2 slashes abort
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This cannot happen (it's a .c misconfig if it does)

Test: TreeHugger
Flag: EXEMPT mainline
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I5d82c7bb8c0214f5ffcc0ce391daddb9fe6a3295
---
 bpf/loader/NetBpfLoad.cpp | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/bpf/loader/NetBpfLoad.cpp b/bpf/loader/NetBpfLoad.cpp
index c8eb53cc37..50c2103e3d 100644
--- a/bpf/loader/NetBpfLoad.cpp
+++ b/bpf/loader/NetBpfLoad.cpp
@@ -431,8 +431,15 @@ int readCodeSections(ElfObject& elfObj, vector<codeSection>& cs) {
 
         string oldName = name;
 
-        // convert all slashes to underscores
-        std::replace(name.begin(), name.end(), '/', '_');
+        // Find the first slash
+        size_t first_slash_pos = name.find('/');
+
+        // If a slash is found, replace it
+        if (first_slash_pos != std::string::npos) {
+            name[first_slash_pos] = '_';
+
+            if (name.find('/') != std::string::npos) abort(); // There should only be one!
+        }
 
         cs_temp.name = name;