The patch titled
Subject: selftests/memfd/memfd_test: fix possible NULL pointer dereference
has been added to the -mm mm-unstable branch. Its filename is
selftests-memfd-memfd_test-fix-possible-null-pointer-dereference.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-memfd-memfd_test-fix-possible-null-pointer-dereference.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: liuye <liuye@xxxxxxxxxx>
Subject: selftests/memfd/memfd_test: fix possible NULL pointer dereference
Date: Tue, 14 Jan 2025 11:21:15 +0800
If `name' is NULL, a NULL pointer may be accessed in printf.
Link: https://lkml.kernel.org/r/20250114032115.58638-1-liuye@xxxxxxxxxx
Signed-off-by: liuye <liuye@xxxxxxxxxx>
Cc: Greg Thelen <gthelen@xxxxxxxxxx>
Cc: "Isaac J. Manjarres" <isaacmanjarres@xxxxxxxxxx>
Cc: Jeff Xu <jeffxu@xxxxxxxxxx>
Cc: Lorenzo Stoakes <lorenzo.stoakes@xxxxxxxxxx>
Cc: Saurav Shah <sauravshah.31@xxxxxxxxx>
Cc: Shuah Khan (Samsung OSG) <shuah@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/memfd/memfd_test.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/tools/testing/selftests/memfd/memfd_test.c~selftests-memfd-memfd_test-fix-possible-null-pointer-dereference
+++ a/tools/testing/selftests/memfd/memfd_test.c
@@ -171,7 +171,7 @@ static void mfd_fail_new(const char *nam
r = sys_memfd_create(name, flags);
if (r >= 0) {
printf("memfd_create(\"%s\", %u) succeeded, but failure expected\n",
- name, flags);
+ name ? name : "NULL", flags);
close(r);
abort();
}
_
Patches currently in -mm which might be from liuye@xxxxxxxxxx are
mm-vmscan-fix-hard-lockup-in-function-isolate_lru_folios.patch
selftests-memfd-memfd_test-fix-possible-null-pointer-dereference.patch
