[PATCH] mm/memory_failure: reject unsupported non-folio compound p=

[Zi Yan]

Signed-off-by: Zi Yan <ziy@xxxxxxxxxx>
---
 mm/memory-failure.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 825c706ac576..4ed903de9a0e 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -2440,9 +2440,12 @@ int memory_failure(unsigned long pfn, int flags)

 	folio =3D page_folio(p);

-	/* filter pages that are protected from hwpoison test by users */
+	/*
+	 * filter pages that are protected from hwpoison test by users
+	 * or unsupported non folio compound pages
+	 */
 	folio_lock(folio);
-	if (hwpoison_filter(p)) {
+	if (hwpoison_filter(p) || !folio_test_large_rmappable(folio)) {
 		ClearPageHWPoison(p);
 		folio_unlock(folio);
 		folio_put(folio);
--=20
2.51.0



Best Regards,
Yan, Zi