From df85e937594d551c91a1efd5ba73d56399304f19 Mon Sep 17 00:00:00 2001
From: Mark Laws <mdl@60hz.org>
Date: Thu, 24 Nov 2022 14:56:29 +0900
Subject: [PATCH] systemd: Default to OOMPolicy=continue for login session
 scopes

If the kernel OOM kills a process under a login session scope, we don't want to
kill the user's other processes for no good reason.

(cherry picked from commit 98b6c94b577205d31b019286c2a84cc9af244ea0)

Resolves: #2175619
---
 src/login/logind-dbus.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/login/logind-dbus.c b/src/login/logind-dbus.c
index 86a5decf3f..2ab26b9c6d 100644
--- a/src/login/logind-dbus.c
+++ b/src/login/logind-dbus.c
@@ -3970,6 +3970,12 @@ int manager_start_scope(
         if (r < 0)
                 return r;
 
+        /* For login session scopes, if a process is OOM killed by the kernel, *don't* terminate the rest of
+           the scope */
+        r = sd_bus_message_append(m, "(sv)", "OOMPolicy", "s", "continue");
+        if (r < 0)
+                return r;
+
         /* disable TasksMax= for the session scope, rely on the slice setting for it */
         r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", UINT64_MAX);
         if (r < 0)