From 1af3e6b45f561881ab514d383c4630963287aa32 Mon Sep 17 00:00:00 2001
From: Chris Martin <marti4d@live.ca>
Date: Wed, 7 May 2025 11:20:03 -0400
Subject: [PATCH 1/2] Fix Yama blocking child-to-parent ptrace

---
 tests/common/mod.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tests/common/mod.rs b/tests/common/mod.rs
index 2b5499ef..f470f1bb 100644
--- a/tests/common/mod.rs
+++ b/tests/common/mod.rs
@@ -9,6 +9,12 @@ type Error = Box<dyn error::Error + std::marker::Send + std::marker::Sync>;
 pub type Result<T> = result::Result<T, Error>;
 
 fn build_command() -> Command {
+    // Anything that needs to spawn a child will need to give it permission to
+    // ptrace itself, as Yama LSM will normally only allow a parent to debug
+    // a child, not the other way around.
+    let rc = unsafe { libc::prctl(libc::PR_SET_PTRACER, libc::PR_SET_PTRACER_ANY) };
+    assert_eq!(rc, 0);
+
     let mut cmd;
     if let Some(binary) = std::env::var_os("TEST_HELPER") {
         cmd = Command::new(binary);

From 9e7d3dbd163a50d3c521cbc3494a2be04f5936ef Mon Sep 17 00:00:00 2001
From: Jake Shadle <jake.shadle@embark-studios.com>
Date: Mon, 12 May 2025 16:05:07 +0200
Subject: [PATCH 2/2] Gate prctl

---
 tests/common/mod.rs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/tests/common/mod.rs b/tests/common/mod.rs
index f470f1bb..745e3a9a 100644
--- a/tests/common/mod.rs
+++ b/tests/common/mod.rs
@@ -12,8 +12,11 @@ fn build_command() -> Command {
     // Anything that needs to spawn a child will need to give it permission to
     // ptrace itself, as Yama LSM will normally only allow a parent to debug
     // a child, not the other way around.
-    let rc = unsafe { libc::prctl(libc::PR_SET_PTRACER, libc::PR_SET_PTRACER_ANY) };
-    assert_eq!(rc, 0);
+    #[cfg(target_os = "linux")]
+    {
+        let rc = unsafe { libc::prctl(libc::PR_SET_PTRACER, libc::PR_SET_PTRACER_ANY) };
+        assert_eq!(rc, 0);
+    }
 
     let mut cmd;
     if let Some(binary) = std::env::var_os("TEST_HELPER") {