From 602f4678c1e764e4e4c4bcdf26a5f83abe39ecdb Mon Sep 17 00:00:00 2001
From: Stephen Halter <halter73@gmail.com>
Date: Fri, 7 Feb 2020 18:33:44 -0800
Subject: [PATCH] Capture file-backed mappings in Linux core dumps (#18897)

---
 eng/helix/content/runtests.sh | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/eng/helix/content/runtests.sh b/eng/helix/content/runtests.sh
index 663b20afb3..34078c763e 100644
--- a/eng/helix/content/runtests.sh
+++ b/eng/helix/content/runtests.sh
@@ -82,6 +82,13 @@ if [ $? -ne 0 ]; then
     done
 fi
 
+if [ -e /proc/self/coredump_filter ]; then
+  # Include memory in private and shared file-backed mappings in the dump.
+  # This ensures that we can see disassembly from our shared libraries when
+  # inspecting the contents of the dump. See 'man core' for details.
+  echo -n 0x3F > /proc/self/coredump_filter
+fi
+
 $DOTNET_ROOT/dotnet vstest $test_binary_path -lt >discovered.txt
 if grep -q "Exception thrown" discovered.txt; then
     echo -e "${RED}Exception thrown during test discovery${RESET}".