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selftests/memfd/memfd_test: fix possible NULL pointer dereference

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If `name' is NULL, a NULL pointer may be accessed in printf.

Link: https://lkml.kernel.org/r/20250114032115.58638-1-liuye@kylinos.cn
Signed-off-by: liuye <liuye@kylinos.cn>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Greg Thelen <gthelen@google.com>
Cc: "Isaac J. Manjarres" <isaacmanjarres@google.com>
Cc: Jeff Xu <jeffxu@google.com>
Cc: Saurav Shah <sauravshah.31@gmail.com>
Cc: Shuah Khan (Samsung OSG) <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
liuye 2025-01-14 11:21:15 +08:00 • committed by Andrew Morton
parent d94d23fdd7
commit 73519ded99
1 changed files with 1 additions and 1 deletions
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2
tools/testing/selftests/memfd/memfd_test.c
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@ -171,7 +171,7 @@ static void mfd_fail_new(const char *name, unsigned int flags)
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();
}