diff --git a/fs/buffer.c b/fs/buffer.c
index 3b12cf9..665db84 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -2917,7 +2917,7 @@
 
 	bh = head;
 	do {
-		if (buffer_write_io_error(bh))
+		if (buffer_write_io_error(bh) && page->mapping)
 			set_bit(AS_EIO, &page->mapping->flags);
 		if (buffer_busy(bh))
 			goto failed;