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-rw-r--r--mm/ptdump.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/mm/ptdump.c b/mm/ptdump.c
index 03c1bdae4a..106e1d66e9 100644
--- a/mm/ptdump.c
+++ b/mm/ptdump.c
@@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/pagewalk.h>
+#include <linux/debugfs.h>
#include <linux/ptdump.h>
#include <linux/kasan.h>
@@ -163,3 +164,24 @@ void ptdump_walk_pgd(struct ptdump_state *st, struct mm_struct *mm, pgd_t *pgd)
/* Flush out the last page */
st->note_page(st, 0, -1, 0);
}
+
+static int check_wx_show(struct seq_file *m, void *v)
+{
+ if (ptdump_check_wx())
+ seq_puts(m, "SUCCESS\n");
+ else
+ seq_puts(m, "FAILED\n");
+
+ return 0;
+}
+
+DEFINE_SHOW_ATTRIBUTE(check_wx);
+
+static int ptdump_debugfs_init(void)
+{
+ debugfs_create_file("check_wx_pages", 0400, NULL, NULL, &check_wx_fops);
+
+ return 0;
+}
+
+device_initcall(ptdump_debugfs_init);