Check the hwpoison page flag only if the page is valid in shmem_read_mapping_page_gfp(). The PageHWPoison() macro tries to access the page flags and cannot work on an error pointer. Signed-off-by: Roberto Sassu <roberto.sassu@xxxxxxxxxx> --- mm/shmem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/shmem.c b/mm/shmem.c index 23c91a8beb78..427863cbf0dc 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -4222,7 +4222,7 @@ struct page *shmem_read_mapping_page_gfp(struct address_space *mapping, else unlock_page(page); - if (PageHWPoison(page)) + if (!IS_ERR(page) && PageHWPoison(page)) page = ERR_PTR(-EIO); return page; -- 2.32.0
