diff --git a/init/service.cpp b/init/service.cpp
index 765b61e56..bcebb4989 100644
--- a/init/service.cpp
+++ b/init/service.cpp
@@ -101,8 +101,22 @@ static void SetUpPidNamespace(const std::string& service_name) {
 
     // It's OK to LOG(FATAL) in this function since it's running in the first
     // child process.
-    if (mount("", "/proc", "proc", kSafeFlags | MS_REMOUNT, "") == -1) {
-        PLOG(FATAL) << "couldn't remount(/proc) for " << service_name;
+
+    // Recursively remount / as slave like zygote does so unmounting and mounting /proc
+    // doesn't interfere with the parent namespace's /proc mount. This will also
+    // prevent any other mounts/unmounts initiated by the service from interfering
+    // with the parent namespace but will still allow mount events from the parent
+    // namespace to propagate to the child.
+    if (mount("rootfs", "/", nullptr, (MS_SLAVE | MS_REC), nullptr) == -1) {
+        PLOG(FATAL) << "couldn't remount(/) recursively as slave for " << service_name;
+    }
+    // umount() then mount() /proc.
+    // Note that it is not sufficient to mount with MS_REMOUNT.
+    if (umount("/proc") == -1) {
+        PLOG(FATAL) << "couldn't umount(/proc) for " << service_name;
+    }
+    if (mount("", "/proc", "proc", kSafeFlags, "") == -1) {
+        PLOG(FATAL) << "couldn't mount(/proc) for " << service_name;
     }
 
     if (prctl(PR_SET_NAME, service_name.c_str()) == -1) {