Thanks so much for catching this Dan!

On Wed, May 28, 2025 at 11:13:45AM +0300, Dan Carpenter wrote:

Check if "procmap_out->fd" is negative instead of "procmap_out" (which is a pointer).

Ye gods, so sorry for such a clanger! Entirely my fault, though I may mutter a grumble about C type safety under my breath :P

Fixes: bd23f293a0d5 ("tools/testing: add PROCMAP_QUERY helper functions in mm self tests") Signed-off-by: Dan Carpenter dan.carpenter@linaro.org

Reviewed-by: Lorenzo Stoakes lorenzo.stoakes@oracle.com

---

tools/testing/selftests/mm/vm_util.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/mm/vm_util.c b/tools/testing/selftests/mm/vm_util.c index 1357e2d6a7b6..61d7bf1f8c62 100644 --- a/tools/testing/selftests/mm/vm_util.c +++ b/tools/testing/selftests/mm/vm_util.c @@ -439,7 +439,7 @@ int open_procmap(pid_t pid, struct procmap_fd *procmap_out) sprintf(path, "/proc/%d/maps", pid); procmap_out->query.size = sizeof(procmap_out->query); procmap_out->fd = open(path, O_RDONLY);

• if (procmap_out < 0)

• if (procmap_out->fd < 0) ret = -errno;

  return ret;

-- 2.47.2

Cheers, Lorenzo