Document wokaround for yama ptrace restrictions
Fixes: 138580915
Test: m checkbuild
Change-Id: Iefee8a914225d465a1feb37690a54423be332841
diff --git a/README.md b/README.md
index 60d7d5a..18422ea 100644
--- a/README.md
+++ b/README.md
@@ -355,6 +355,18 @@
dlv connect :1234
```
+If you see an error:
+```
+Could not attach to pid 593: this could be caused by a kernel
+security setting, try writing "0" to /proc/sys/kernel/yama/ptrace_scope
+```
+you can temporarily disable
+[Yama's ptrace protection](https://www.kernel.org/doc/Documentation/security/Yama.txt)
+using:
+```bash
+sudo sysctl -w kernel.yama.ptrace_scope=0
+```
+
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