mm, oom: ensure sysrq+f always passes valid zonelist
With hotpluggable and memoryless nodes, it's possible that node 0 will
not be online, so use the first online node's zonelist rather than
hardcoding node 0 to pass a zonelist with all zones to the oom killer.
Signed-off-by: David Rientjes <rientjes@google.com>
Reviewed-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c
index 16ee6ce..b3c4a25 100644
--- a/drivers/tty/sysrq.c
+++ b/drivers/tty/sysrq.c
@@ -346,7 +346,8 @@
static void moom_callback(struct work_struct *ignored)
{
- out_of_memory(node_zonelist(0, GFP_KERNEL), GFP_KERNEL, 0, NULL, true);
+ out_of_memory(node_zonelist(first_online_node, GFP_KERNEL), GFP_KERNEL,
+ 0, NULL, true);
}
static DECLARE_WORK(moom_work, moom_callback);